About

The package is the client library for the mock server. The source code is generated by the openapi3-code-generator, specifically its patched version.

Usage

module Main

import MockServer as Mock
import Network.HTTP.Client

conf :: Mock.Configuration
conf = Configuration
  { configBaseURL = "http://localhost"
  , configSecurityScheme = id
  , configIncludeUserAgent = False
  , configApplicationName = "ping-app" }

expectation :: Mock.Expectations
expectation = Mock.ExpectationsExpectation $ Mock.mkExpectation
  { expectationHttpRequest = Just request
  , expectationHttpResponse = Just response }
  where
    request = Mock.mkHttpRequest
      { httpRequestMethod = Just $ StringOrJsonSchemaText "POST"
      , httpRequestPath = Just $ StringOrJsonSchemaText "/ping" }
    response = Mock.mkHttpResponse
      { httpResponseBody = Just $ BodyWithContentTypeRawStringResponseBody "pong"
      , httpResponseStatusCode = Just 200 }

-- | Puts the expectation which will response with "pong" body to the "POST /ping" request
main :: IO ()
main = do
  void $ Mock.runWithConfiguration conf $ Mock.put_mockserver_expectation expectation

Maintainance

Files

The codegen dir

• regen.sh is the simple script to regenerate the whole package.
• shell.nix a shell in which the regen.sh calls the openapi3-code-generator to regenerate the code
• mock-server-openapi.yaml not the original specification of the mock-server as you might think. The thing is that the openapi3-code-generator does not support all the features of the OpenAPI3 standard correctly, so it is hand-postprocessed. It was originally downloaded from here and fixed.

Other

• src and mock-server-client.cabal contain the generted code, but not exactly. Some of the parts of the generted code was not very pleasant, so it was fixed too.

What will happen if you just call the regen.sh?

It will build the openapi3-code-generator in nix and regenerate the whole Haskell source code. You will see that the code was changed, because as mentioned earlier the original code was slightly modified, so watch your commits.

How to update the package to the new version of the mock-server spec?

• Commit or discard all changes
• git checkout update-openapi-spec
• Replace the codegen/mock-server-openapi.yaml with a newer version
• git commit -m "updated mock-server-openapi.yaml to version $NEWVERSION"
• git checkout -b "update-$NEWVERSION" master
• git merge update-openapi-spec
• Resolve conflicts if any
• ./codegen/regen.sh
• git symbolic-ref HEAD refs/heads/update-generated-code && git reset switching to the branch update-generated-code without checking out the working-tree
• git commit -m "update the generted code for version $NEWVERSION"
• git checkout "update-$NEWVERSION"
• git merge update-generated-code
• Resolve conflicts if any
• git push origin "update-$NEWVERSION"
• Create PR, wait for CI, review, merge into the master

The algorithm is kind of weird, but for a reason.

The branch update-openapi-spec is the branch tracking only original codegen/mock-server-openapi.yaml changes, meaning changes made by authors of the mock-server. So, when you merge changes of this branch into the master you literally merge the changes made by authors of the mock-server with our manual changes made to please the openapi3-code-generator.

The bratch update-generated-code is for tracking "changes" made by the code generator when it is feed by the new OpenAPI spec file. So, when you merge this branch into the master you literally merge the "code regeneration patch" with changes made by hand.

The master branch is for manual changes only. The changes made to keep things working and the package usable. You can always see the manual changes just by git diff update-generated-code master or git diff update-openapi-spec master