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https://github.com/roc-lang/roc.git
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238 lines
10 KiB
Rust
238 lines
10 KiB
Rust
#[macro_use]
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extern crate pretty_assertions;
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#[macro_use]
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extern crate indoc;
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extern crate dircpy;
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extern crate roc_collections;
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mod helpers;
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#[cfg(test)]
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mod glue_cli_run {
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use crate::helpers::fixtures_dir;
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use cli_utils::helpers::{run_glue, run_roc, Out};
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use std::fs;
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use std::path::Path;
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/// This macro does two things.
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///
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/// First, it generates and runs a separate test for each of the given
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/// expected stdout endings. Each of these should test a particular .roc file
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/// in the fixtures/ directory. The fixtures themselves run assertions too, but
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/// the stdout check verifies that we're actually running the code we think we are;
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/// without it, it would be possible that the fixtures are just exiting without running
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/// any assertions, and we would have no way to find out!
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///
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/// Second, this generates an extra test which (non-recursively) traverses the
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/// fixtures/ directory and verifies that each of the .roc files in there
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/// has had a corresponding test generated in the previous step. This test
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/// will fail if we ever add a new .roc file to fixtures/ and forget to
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/// add a test for it here!
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macro_rules! fixtures {
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($($test_name:ident:$fixture_dir:expr => $ends_with:expr,)+) => {
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$(
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#[test]
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#[allow(non_snake_case)]
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fn $test_name() {
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// TODO: fix and re-enable glue for dict and set.
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if $fixture_dir == "dict" || $fixture_dir == "set" {
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return;
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}
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let dir = fixtures_dir($fixture_dir);
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generate_glue_for(&dir, std::iter::empty());
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let out = run_app(&dir.join("app.roc"), std::iter::empty());
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assert!(out.status.success());
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let ignorable = "🔨 Rebuilding platform...\n";
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let stderr = out.stderr.replacen(ignorable, "", 1);
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assert_eq!(stderr, "");
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assert!(
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out.stdout.ends_with($ends_with),
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"Unexpected stdout ending\n\n expected:\n\n {}\n\n but stdout was:\n\n {}",
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$ends_with,
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out.stdout
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);
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}
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)*
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#[test]
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fn all_fixtures_have_tests() {
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use roc_collections::VecSet;
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let mut all_fixtures: VecSet<String> = VecSet::default();
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$(
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all_fixtures.insert($fixture_dir.to_string());
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)*
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check_for_tests(&mut all_fixtures);
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}
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}
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}
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fixtures! {
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basic_record:"basic-record" => "Record was: MyRcd { b: 42, a: 1995 }\n",
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nested_record:"nested-record" => "Record was: Outer { y: \"foo\", z: [1, 2], x: Inner { b: 24.0, a: 5 } }\n",
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dict:"dict" => indoc!(r#"
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dict was: RocDict {"foo": "bar", "baz": "blah"}
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"#),
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set:"set" => indoc!(r#"
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set was: RocSet {"foo", "bar", "baz"}
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"#),
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enumeration:"enumeration" => "tag_union was: MyEnum::Foo, Bar is: MyEnum::Bar, Baz is: MyEnum::Baz\n",
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union_with_padding:"union-with-padding" => indoc!(r#"
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tag_union was: NonRecursive::Foo("This is a test")
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`Foo "small str"` is: NonRecursive::Foo("small str")
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`Foo "A long enough string to not be small"` is: NonRecursive::Foo("A long enough string to not be small")
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`Bar 123` is: NonRecursive::Bar(123)
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`Baz` is: NonRecursive::Baz
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`Blah 456` is: NonRecursive::Blah(456)
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"#),
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single_tag_union:"single-tag-union" => indoc!(r#"
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tag_union was: SingleTagUnion::OneTag
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"#),
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union_without_padding:"union-without-padding" => indoc!(r#"
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tag_union was: NonRecursive::Foo("This is a test")
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`Foo "small str"` is: NonRecursive::Foo("small str")
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`Bar 123` is: NonRecursive::Bar(123)
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`Baz` is: NonRecursive::Baz
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`Blah 456` is: NonRecursive::Blah(456)
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"#),
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nullable_wrapped:"nullable-wrapped" => indoc!(r#"
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tag_union was: StrFingerTree::More("foo", StrFingerTree::More("bar", StrFingerTree::Empty))
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`More "small str" (Single "other str")` is: StrFingerTree::More("small str", StrFingerTree::Single("other str"))
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`More "small str" Empty` is: StrFingerTree::More("small str", StrFingerTree::Empty)
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`Single "small str"` is: StrFingerTree::Single("small str")
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`Empty` is: StrFingerTree::Empty
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"#),
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nullable_unwrapped:"nullable-unwrapped" => indoc!(r#"
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tag_union was: StrConsList::Cons("World!", StrConsList::Cons("Hello ", StrConsList::Nil))
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`Cons "small str" Nil` is: StrConsList::Cons("small str", StrConsList::Nil)
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`Nil` is: StrConsList::Nil
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"#),
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nonnullable_unwrapped:"nonnullable-unwrapped" => indoc!(r#"
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tag_union was: StrRoseTree::Tree(ManuallyDrop { value: StrRoseTree_Tree { f0: "root", f1: [StrRoseTree::Tree(ManuallyDrop { value: StrRoseTree_Tree { f0: "leaf1", f1: [] } }), StrRoseTree::Tree(ManuallyDrop { value: StrRoseTree_Tree { f0: "leaf2", f1: [] } })] } })
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Tree "foo" [] is: StrRoseTree::Tree(ManuallyDrop { value: StrRoseTree_Tree { f0: "foo", f1: [] } })
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"#),
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basic_recursive_union:"basic-recursive-union" => indoc!(r#"
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tag_union was: Expr::Concat(Expr::String("Hello, "), Expr::String("World!"))
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`Concat (String "Hello, ") (String "World!")` is: Expr::Concat(Expr::String("Hello, "), Expr::String("World!"))
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`String "this is a test"` is: Expr::String("this is a test")
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"#),
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advanced_recursive_union:"advanced-recursive-union" => indoc!(r#"
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rbt was: Rbt { default: Job::Job(R1 { command: Command::Command(R2 { tool: Tool::SystemTool(R4 { name: "test", num: 42 }) }), inputFiles: ["foo"] }) }
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"#),
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list_recursive_union:"list-recursive-union" => indoc!(r#"
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rbt was: Rbt { default: Job::Job(R1 { command: Command::Command(R2 { args: [], tool: Tool::SystemTool(R3 { name: "test" }) }), inputFiles: ["foo"], job: [] }) }
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"#),
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multiple_modules:"multiple-modules" => indoc!(r#"
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combined was: Combined { s1: DepStr1::S("hello"), s2: DepStr2::R("world") }
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"#),
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}
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fn check_for_tests(all_fixtures: &mut roc_collections::VecSet<String>) {
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use roc_collections::VecSet;
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let fixtures = fixtures_dir("");
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let entries = std::fs::read_dir(fixtures.as_path()).unwrap_or_else(|err| {
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panic!(
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"Error trying to read {} as a fixtures directory: {}",
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fixtures.to_string_lossy(),
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err
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);
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});
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for entry in entries {
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let entry = entry.unwrap();
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if entry.file_type().unwrap().is_dir() {
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let fixture_dir_name = entry.file_name().into_string().unwrap();
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if !all_fixtures.remove(&fixture_dir_name) {
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panic!(
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"The glue fixture directory {} does not have any corresponding tests in test_glue_cli. Please add one, so if it ever stops working, we'll know about it right away!",
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entry.path().to_string_lossy()
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);
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}
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}
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}
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assert_eq!(all_fixtures, &mut VecSet::default());
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}
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fn generate_glue_for<'a, I: IntoIterator<Item = &'a str>>(
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platform_dir: &'a Path,
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args: I,
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) -> Out {
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let platform_module_path = platform_dir.join("platform.roc");
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let glue_file = platform_dir.join("src").join("test_glue.rs");
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let fixture_templates_dir = platform_dir
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.parent()
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.unwrap()
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.parent()
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.unwrap()
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.join("fixture-templates");
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// Copy the rust template from the templates directory into the fixture dir.
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dircpy::CopyBuilder::new(fixture_templates_dir.join("rust"), platform_dir)
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.overwrite(true) // overwrite any files that were already present
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.run()
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.unwrap();
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// Delete the glue file to make sure we're actually regenerating it!
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if glue_file.exists() {
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fs::remove_file(&glue_file)
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.expect("Unable to remove test_glue.rs in order to regenerate it in the test");
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}
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// Generate a fresh test_glue.rs for this platform
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let glue_out = run_glue(
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// converting these all to String avoids lifetime issues
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std::iter::once("glue".to_string()).chain(
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args.into_iter().map(|arg| arg.to_string()).chain([
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platform_module_path.to_str().unwrap().to_string(),
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glue_file.to_str().unwrap().to_string(),
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]),
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),
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);
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let ignorable = "🔨 Rebuilding platform...\n";
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let stderr = glue_out.stderr.replacen(ignorable, "", 1);
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let is_reporting_runtime = stderr.starts_with("runtime: ") && stderr.ends_with("ms\n");
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if !(stderr.is_empty() || is_reporting_runtime) {
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panic!("`roc glue` command had unexpected stderr: {}", stderr);
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}
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assert!(glue_out.status.success(), "bad status {:?}", glue_out);
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glue_out
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}
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fn run_app<'a, I: IntoIterator<Item = &'a str>>(app_file: &'a Path, args: I) -> Out {
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// Generate test_glue.rs for this platform
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let compile_out = run_roc(
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// converting these all to String avoids lifetime issues
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args.into_iter()
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.map(|arg| arg.to_string())
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.chain([app_file.to_str().unwrap().to_string()]),
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&[],
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&[],
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);
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let ignorable = "🔨 Rebuilding platform...\n";
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let stderr = compile_out.stderr.replacen(ignorable, "", 1);
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let is_reporting_runtime = stderr.starts_with("runtime: ") && stderr.ends_with("ms\n");
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if !(stderr.is_empty() || is_reporting_runtime) {
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panic!("`roc` command had unexpected stderr: {}", stderr);
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}
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assert!(compile_out.status.success(), "bad status {:?}", compile_out);
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compile_out
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}
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}
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