mirror of
https://github.com/jfmengels/elm-review.git
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737 lines
26 KiB
Elm
737 lines
26 KiB
Elm
module NoUnused.ExportsTest exposing (all)
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import Elm.Project
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import Elm.Version
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import Json.Decode as Decode
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import NoUnused.Exports exposing (rule)
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import Review.Project as Project exposing (Project)
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import Review.Test
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import Test exposing (Test, describe, test)
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application : Project
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application =
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Project.new
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|> Project.addElmJson applicationElmJson
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applicationElmJson : { path : String, raw : String, project : Elm.Project.Project }
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applicationElmJson =
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{ path = "elm.json"
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, raw = """{
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"type": "application",
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"source-directories": [
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"src"
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],
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"elm-version": "0.19.1",
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"dependencies": {
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"direct": {
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"elm/core": "1.0.2"
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},
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"indirect": {}
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},
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"test-dependencies": {
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"direct": {},
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"indirect": {}
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}
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}"""
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, project =
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Elm.Project.Application
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{ elm = Elm.Version.one
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, dirs = []
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, depsDirect = []
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, depsIndirect = []
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, testDepsDirect = []
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, testDepsIndirect = []
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}
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}
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package_ : Project
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package_ =
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Project.new
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|> Project.addElmJson (createPackageElmJson ())
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createPackageElmJson : () -> { path : String, raw : String, project : Elm.Project.Project }
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createPackageElmJson _ =
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case Decode.decodeString Elm.Project.decoder rawPackageElmJson of
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Ok elmJson ->
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{ path = "elm.json"
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, raw = rawPackageElmJson
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, project = elmJson
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}
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Err _ ->
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createPackageElmJson ()
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rawPackageElmJson : String
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rawPackageElmJson =
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"""{
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"type": "package",
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"name": "author/package",
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"summary": "Summary",
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"license": "BSD-3-Clause",
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"version": "1.0.0",
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"exposed-modules": [
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"Exposed"
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],
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"elm-version": "0.19.0 <= v < 0.20.0",
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"dependencies": {},
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"test-dependencies": {}
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}"""
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details : List String
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details =
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[ "This exposed element is never used. You may want to remove it to keep your project clean, and maybe detect some unused code in your project."
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]
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all : Test
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all =
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describe "NoUnusedExports"
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[ functionsAndValuesTests
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, typesTests
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, typeAliasesTests
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, duplicateModuleNameTests
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, importsTests
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-- TODO Add tests that report exposing the type's variants if they are never used.
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]
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functionsAndValuesTests : Test
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functionsAndValuesTests =
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describe "Functions and values"
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[ test "should report an exposed function when it is not used in other modules" <|
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\() ->
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"""
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module A exposing (a)
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a = 1
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"""
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|> Review.Test.runWithProjectData application rule
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|> Review.Test.expectErrors
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[ Review.Test.error
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{ message = "Exposed function or value `a` is never used outside this module."
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, details = details
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, under = "a"
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}
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|> Review.Test.atExactly { start = { row = 2, column = 20 }, end = { row = 2, column = 21 } }
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]
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, test "should not report an exposed function when it is used in other modules (qualified import)" <|
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\() ->
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[ """
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module A exposing (a)
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a = 1
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""", """
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module B exposing (main)
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import A
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main = A.a
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""" ]
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|> Review.Test.runOnModulesWithProjectData application rule
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|> Review.Test.expectNoErrors
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, test "should not report an exposed function when it is used in other modules (using an alias)" <|
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\() ->
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[ """
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module A exposing (a)
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a = 1
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""", """
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module B exposing (main)
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import A as SomeA
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main = SomeA.a
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""" ]
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|> Review.Test.runOnModulesWithProjectData application rule
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|> Review.Test.expectNoErrors
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, test "should not report an exposed function when it is used in other modules (using `exposing` to import)" <|
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\() ->
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[ """
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module A exposing (a)
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a = 1
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""", """
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module B exposing (main)
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import A exposing (a)
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main = a
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""" ]
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|> Review.Test.runOnModulesWithProjectData application rule
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|> Review.Test.expectNoErrors
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, test "should not report an exposed function when it is used in other modules (using `exposing(..)` to import)" <|
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\() ->
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[ """
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module A exposing (a)
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a = 1
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""", """
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module B exposing (main)
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import A exposing (..)
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main = a
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""" ]
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|> Review.Test.runOnModulesWithProjectData application rule
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|> Review.Test.expectNoErrors
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, test "should report an exposed function when it is not used in other modules, even if it is used in the module" <|
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\() ->
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"""
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module A exposing (exposed)
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exposed = 1
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main = exposed
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"""
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|> Review.Test.runWithProjectData package_ rule
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|> Review.Test.expectErrors
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[ Review.Test.error
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{ message = "Exposed function or value `exposed` is never used outside this module."
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, details = details
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, under = "exposed"
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}
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|> Review.Test.atExactly { start = { row = 2, column = 20 }, end = { row = 2, column = 27 } }
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]
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, test "should propose a fix for unused exports if there are others exposed elements" <|
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\() ->
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"""
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module A exposing (exposed1, exposed2)
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exposed1 = 1
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exposed2 = 2
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"""
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|> Review.Test.runWithProjectData package_ rule
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|> Review.Test.expectErrors
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[ Review.Test.error
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{ message = "Exposed function or value `exposed1` is never used outside this module."
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, details = details
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, under = "exposed1"
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}
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|> Review.Test.atExactly { start = { row = 2, column = 20 }, end = { row = 2, column = 28 } }
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|> Review.Test.whenFixed """
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module A exposing (exposed2)
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exposed1 = 1
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exposed2 = 2
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"""
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, Review.Test.error
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{ message = "Exposed function or value `exposed2` is never used outside this module."
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, details = details
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, under = "exposed2"
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}
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|> Review.Test.atExactly { start = { row = 2, column = 30 }, end = { row = 2, column = 38 } }
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|> Review.Test.whenFixed """
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module A exposing (exposed1)
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exposed1 = 1
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exposed2 = 2
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"""
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]
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, test "should not report anything for modules that expose everything`" <|
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\() ->
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"""
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module A exposing (..)
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a = 1
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"""
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|> Review.Test.runWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report the `main` function for an application even if it is unused" <|
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\() ->
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"""
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module Main exposing (main)
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main = text ""
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"""
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|> Review.Test.runWithProjectData application rule
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|> Review.Test.expectNoErrors
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, test "should report the `main` function for a package when it is never used outside the module" <|
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\() ->
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"""
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module Main exposing (main)
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main = text ""
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"""
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|> Review.Test.runWithProjectData package_ rule
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|> Review.Test.expectErrors
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[ Review.Test.error
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{ message = "Exposed function or value `main` is never used outside this module."
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, details = details
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, under = "main"
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}
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|> Review.Test.atExactly { start = { row = 2, column = 23 }, end = { row = 2, column = 27 } }
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]
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, test "should not report a function that does not refer to anything" <|
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\() ->
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"""
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module A exposing (b)
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a = 1
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"""
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|> Review.Test.runWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report exposed tests" <|
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\() ->
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"""
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module ThingTest exposing (a)
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import Test exposing (Test)
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a : Test
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a = Test.describe "thing" []
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"""
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|> Review.Test.runWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not ReviewConfig.config" <|
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\() ->
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"""
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module ReviewConfig exposing (config)
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config = []
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"""
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|> Review.Test.runWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report a function in a 'shadowed' module" <|
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\() ->
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[ """module Foo exposing (foo)
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foo = 1
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""", """module Bar exposing (bar)
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bar = 2
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""", """module Main exposing (main)
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import Bar as Foo
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import Foo
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main = [ Foo.foo, Foo.bar ]
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""" ]
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|> Review.Test.runOnModulesWithProjectData application rule
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|> Review.Test.expectNoErrors
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]
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typesTests : Test
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typesTests =
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describe "Types"
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[ test "should report an unused exposed custom type" <|
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\() ->
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"""
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module A exposing (Exposed)
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type Exposed = VariantA | VariantB
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"""
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|> Review.Test.runWithProjectData application rule
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|> Review.Test.expectErrors
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[ Review.Test.error
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{ message = "Exposed type or type alias `Exposed` is never used outside this module."
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, details = details
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, under = "Exposed"
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}
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|> Review.Test.atExactly { start = { row = 2, column = 20 }, end = { row = 2, column = 27 } }
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]
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, test "should not report a used exposed custom type (type signature)" <|
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\() ->
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[ """
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module A exposing (Exposed)
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type Exposed = VariantA | VariantB
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""", """
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module B exposing (main)
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import A
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main : A.Exposed
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main = VariantA
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""" ]
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|> Review.Test.runOnModulesWithProjectData application rule
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|> Review.Test.expectNoErrors
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, test "should not report a used exposed custom type (used in type alias)" <|
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\() ->
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[ """
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module A exposing (ExposedB, ExposedC)
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type ExposedB = B
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type ExposedC = C
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""", """
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module Exposed exposing (B, C)
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import A
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type alias B = A.ExposedB
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type alias C = A.ExposedC
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""" ]
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|> Review.Test.runOnModulesWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report an unused exposed custom type if it's part of the package's exposed API" <|
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\() ->
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"""
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module Exposed exposing (MyType)
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type MyType = VariantA | VariantB
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"""
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|> Review.Test.runWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report an unused exposed custom type if it's present in the signature of an exposed function" <|
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\() ->
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"""
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module A exposing (main, MyType)
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type MyType = VariantA | VariantB
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main : () -> MyType
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main = 1
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"""
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|> Review.Test.runWithProjectData application rule
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|> Review.Test.expectNoErrors
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, test "should not report an unused exposed custom type if it's aliased by an exposed type alias" <|
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\() ->
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[ """
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module A exposing (MyType, OtherType)
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type MyType = VariantA | VariantB
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type alias OtherType = MyType
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""", """
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module Exposed exposing (..)
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import A
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type alias B = A.OtherType
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""" ]
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|> Review.Test.runOnModulesWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report an unused exposed custom type if it's present in an exposed type alias" <|
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\() ->
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[ """
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module A exposing (MyType, OtherType)
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type MyType = VariantA | VariantB
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type alias OtherType = { thing : MyType }
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""", """
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module Exposed exposing (..)
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import A
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type alias B = A.OtherType
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""" ]
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|> Review.Test.runOnModulesWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report an unused exposed custom type if it's present in an exposed type alias (nested)" <|
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\() ->
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[ """
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module A exposing (MyType, OtherType)
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type MyType = VariantA | VariantB
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type alias OtherType = { other : { thing : ((), MyType) } }
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""", """
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module Exposed exposing (..)
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import A
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type alias B = A.OtherType
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""" ]
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|> Review.Test.runOnModulesWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report an unused exposed custom type if it's present in an exposed custom type constructor's arguments" <|
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\() ->
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[ """
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module A exposing (MyType, OtherType(..))
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type MyType = VariantA | VariantB
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type OtherType = Thing MyType
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""", """
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module Exposed exposing (..)
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import A
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type alias B = A.OtherType
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""" ]
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|> Review.Test.runOnModulesWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report an unused exposed custom type if it's present in an exposed custom type constructor's arguments but the constructors are not exposed" <|
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\() ->
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[ """
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module A exposing (MyType, OtherType)
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type MyType = VariantA | VariantB
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type OtherType = Thing MyType
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""", """
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module Exposed exposing (..)
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import A
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type alias B = A.OtherType
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""" ]
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|> Review.Test.runOnModulesWithProjectData package_ rule
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|> Review.Test.expectErrorsForModules
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[ ( "A"
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, [ Review.Test.error
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{ message = "Exposed type or type alias `MyType` is never used outside this module."
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, details = details
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, under = "MyType"
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}
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|> Review.Test.atExactly { start = { row = 2, column = 20 }, end = { row = 2, column = 26 } }
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|> Review.Test.whenFixed """
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module A exposing (OtherType)
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type MyType = VariantA | VariantB
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type OtherType = Thing MyType
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"""
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]
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)
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]
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, test "should not report an unused exposed custom type if it's present in an exposed custom type constructor's arguments (nested)" <|
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\() ->
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[ """
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module A exposing (MyType, OtherType(..))
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type MyType = VariantA | VariantB
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type OtherType = OtherThing | SomeThing ((), List MyType)
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""", """
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module Exposed exposing (..)
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import A
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type alias B = A.OtherType
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""" ]
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|> Review.Test.runOnModulesWithProjectData package_ rule
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|> Review.Test.expectNoErrors
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, test "should not report an unused exposed custom type if it's present in an exposed custom type constructor's arguments (nested) but the constructors are not exposed" <|
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\() ->
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[ """
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module A exposing (MyType, OtherType)
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type MyType = VariantA | VariantB
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type OtherType = OtherThing | SomeThing ((), List MyType)
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""", """
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module Exposed exposing (..)
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import A
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type alias B = A.OtherType
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""" ]
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|> Review.Test.runOnModulesWithProjectData package_ rule
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|> Review.Test.expectErrorsForModules
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[ ( "A"
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, [ Review.Test.error
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{ message = "Exposed type or type alias `MyType` is never used outside this module."
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, details = details
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, under = "MyType"
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}
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|> Review.Test.atExactly { start = { row = 2, column = 20 }, end = { row = 2, column = 26 } }
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|> Review.Test.whenFixed """
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module A exposing (OtherType)
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type MyType = VariantA | VariantB
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type OtherType = OtherThing | SomeThing ((), List MyType)
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"""
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]
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)
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]
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]
|
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|
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|
|
typeAliasesTests : Test
|
|
typeAliasesTests =
|
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describe "Type aliases"
|
|
[ test "should report an unused exposed type alias" <|
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\() ->
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"""
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module A exposing (Exposed)
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type alias Exposed = {}
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"""
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|> Review.Test.runWithProjectData application rule
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|> Review.Test.expectErrors
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[ Review.Test.error
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{ message = "Exposed type or type alias `Exposed` is never used outside this module."
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, details = details
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, under = "Exposed"
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}
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|> Review.Test.atExactly { start = { row = 2, column = 20 }, end = { row = 2, column = 27 } }
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]
|
|
, test "should not report a used exposed type alias (type signature)" <|
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\() ->
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[ """
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module A exposing (Exposed)
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type alias Exposed = {}
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""", """
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module B exposing (main)
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import A
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main : A.Exposed
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main = {}
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""" ]
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|
|> Review.Test.runOnModulesWithProjectData application rule
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|> Review.Test.expectNoErrors
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, test "should not report a used exposed type alias (used in type alias)" <|
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\() ->
|
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[ """
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module A exposing (ExposedB)
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type alias ExposedB = {}
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""", """
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module Exposed exposing (B)
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import A
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type alias B = A.ExposedB
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""" ]
|
|
|> Review.Test.runOnModulesWithProjectData package_ rule
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|
|> Review.Test.expectNoErrors
|
|
, test "should not report an unused exposed type alias if it's part of the package's exposed API" <|
|
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\() ->
|
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"""
|
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module Exposed exposing (MyType)
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type alias MyType = {}
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"""
|
|
|> Review.Test.runWithProjectData package_ rule
|
|
|> Review.Test.expectNoErrors
|
|
, test "should not report an unused exposed type alias if it's present in the signature of an exposed function" <|
|
|
\() ->
|
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"""
|
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module A exposing (main, MyType)
|
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type alias MyType = {}
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main : () -> MyType
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main = 1
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"""
|
|
|> Review.Test.runWithProjectData application rule
|
|
|> Review.Test.expectNoErrors
|
|
, test "should not report an unused exposed type alias if it's aliased by an exposed type alias" <|
|
|
\() ->
|
|
[ """
|
|
module A exposing (MyType, OtherType)
|
|
type alias MyType = {}
|
|
type alias OtherType = MyType
|
|
""", """
|
|
module Exposed exposing (..)
|
|
import A
|
|
type alias B = A.OtherType
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData package_ rule
|
|
|> Review.Test.expectNoErrors
|
|
, test "should not report an unused exposed type alias if it's present in an exposed type alias" <|
|
|
\() ->
|
|
[ """
|
|
module A exposing (MyType, OtherType)
|
|
type alias MyType = {}
|
|
type alias OtherType = { thing : MyType }
|
|
""", """
|
|
module Exposed exposing (..)
|
|
import A
|
|
type alias B = A.OtherType
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData package_ rule
|
|
|> Review.Test.expectNoErrors
|
|
, test "should not report an unused exposed type alias if it's present in an exposed type alias (nested)" <|
|
|
\() ->
|
|
[ """
|
|
module A exposing (MyType, OtherType)
|
|
type alias MyType = {}
|
|
type alias OtherType = { other : { thing : ((), MyType) } }
|
|
""", """
|
|
module Exposed exposing (..)
|
|
import A
|
|
type alias B = A.OtherType
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData package_ rule
|
|
|> Review.Test.expectNoErrors
|
|
, test "should not report an unused exposed type alias if it's present in an exposed custom type constructor's arguments" <|
|
|
\() ->
|
|
[ """
|
|
module A exposing (MyType, OtherType(..))
|
|
type alias MyType = {}
|
|
type OtherType = OtherType MyType
|
|
""", """
|
|
module Exposed exposing (..)
|
|
import A
|
|
type alias B = A.OtherType
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData package_ rule
|
|
|> Review.Test.expectNoErrors
|
|
, test "should not report an unused exposed type alias if it's present in an exposed custom type constructor's arguments but the constructors are not exposed" <|
|
|
\() ->
|
|
[ """
|
|
module A exposing (MyType, OtherType)
|
|
type alias MyType = {}
|
|
type OtherType = OtherType MyType
|
|
""", """
|
|
module Exposed exposing (..)
|
|
import A
|
|
type alias B = A.OtherType
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData package_ rule
|
|
|> Review.Test.expectErrorsForModules
|
|
[ ( "A"
|
|
, [ Review.Test.error
|
|
{ message = "Exposed type or type alias `MyType` is never used outside this module."
|
|
, details = details
|
|
, under = "MyType"
|
|
}
|
|
|> Review.Test.atExactly { start = { row = 2, column = 20 }, end = { row = 2, column = 26 } }
|
|
|> Review.Test.whenFixed """
|
|
module A exposing (OtherType)
|
|
type alias MyType = {}
|
|
type OtherType = OtherType MyType
|
|
"""
|
|
]
|
|
)
|
|
]
|
|
, test "should not report an unused exposed type alias if it's present in an exposed custom type constructor's arguments (nested)" <|
|
|
\() ->
|
|
[ """
|
|
module A exposing (MyType, OtherType(..))
|
|
type alias MyType = {}
|
|
type OtherType = OtherThing | SomeThing ((), List MyType)
|
|
""", """
|
|
module Exposed exposing (..)
|
|
import A
|
|
type alias B = A.OtherType
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData package_ rule
|
|
|> Review.Test.expectNoErrors
|
|
, test "should report an unused exposed type alias if it's present in an exposed custom type constructor's arguments (nested) but the constructors are not exposed" <|
|
|
\() ->
|
|
[ """
|
|
module A exposing (MyType, OtherType)
|
|
type alias MyType = {}
|
|
type OtherType = OtherThing | SomeThing ((), List MyType)
|
|
""", """
|
|
module Exposed exposing (..)
|
|
import A
|
|
type alias B = A.OtherType
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData package_ rule
|
|
|> Review.Test.expectErrorsForModules
|
|
[ ( "A"
|
|
, [ Review.Test.error
|
|
{ message = "Exposed type or type alias `MyType` is never used outside this module."
|
|
, details = details
|
|
, under = "MyType"
|
|
}
|
|
|> Review.Test.atExactly { start = { row = 2, column = 20 }, end = { row = 2, column = 26 } }
|
|
|> Review.Test.whenFixed """
|
|
module A exposing (OtherType)
|
|
type alias MyType = {}
|
|
type OtherType = OtherThing | SomeThing ((), List MyType)
|
|
"""
|
|
]
|
|
)
|
|
]
|
|
, test "should report the correct range when exports are on multiple lines" <|
|
|
\() ->
|
|
[ """module A
|
|
exposing ( Card
|
|
, Link
|
|
, init
|
|
, toElement
|
|
)
|
|
type Card = Card
|
|
type Link = Link
|
|
init = 1
|
|
""", """
|
|
module Exposed exposing (..)
|
|
import A
|
|
a = A.Card A.init A.toElement
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData package_ rule
|
|
|> Review.Test.expectErrorsForModules
|
|
[ ( "A"
|
|
, [ Review.Test.error
|
|
{ message = "Exposed type or type alias `Link` is never used outside this module."
|
|
, details = details
|
|
, under = "Link"
|
|
}
|
|
|> Review.Test.atExactly { start = { row = 3, column = 7 }, end = { row = 3, column = 11 } }
|
|
|> Review.Test.whenFixed """module A
|
|
exposing ( Card
|
|
, init
|
|
, toElement
|
|
)
|
|
type Card = Card
|
|
type Link = Link
|
|
init = 1
|
|
"""
|
|
]
|
|
)
|
|
]
|
|
]
|
|
|
|
|
|
duplicateModuleNameTests : Test
|
|
duplicateModuleNameTests =
|
|
describe "Duplicate module names"
|
|
[ test "should not report a used export even if it is imported through a module whose name appears twice" <|
|
|
\() ->
|
|
[ """module Main exposing (main)
|
|
import A as X
|
|
import B as X
|
|
main = X.a X.b
|
|
""", """module A exposing (a)
|
|
a = 1
|
|
""", """module B exposing (b)
|
|
b = 2
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData application rule
|
|
|> Review.Test.expectNoErrors
|
|
]
|
|
|
|
|
|
importsTests : Test
|
|
importsTests =
|
|
describe "Imports"
|
|
[ test "should not report an export if it is imported by name" <|
|
|
\() ->
|
|
[ """module Main exposing (main)
|
|
import B exposing (Type1, Type2(..), TypeAlias, b)
|
|
main = 1
|
|
""", """module B exposing (Type1, Type2(..), TypeAlias, b)
|
|
type Type1 = Type1
|
|
type Type2 = Type2
|
|
type alias TypeAlias = {}
|
|
b = 2
|
|
""" ]
|
|
|> Review.Test.runOnModulesWithProjectData application rule
|
|
|> Review.Test.expectNoErrors
|
|
]
|