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Hacking on Clutz and Gents

Prerequisites

  • Java JDK version 7 or 8
  • gradle 3.0
  • NodeJS 5 or later, including NPM

NPM dependencies

Clutz and Gents use some tools that are installed using npm (clang-format and typescript, specifically). Run npm install in your project folder to install them.

Building

Run gradle assemble to build, gradle test to, well, test.

IDE setup

Run gradle eclipse to generate Eclipse project configuration.

Tests

You can run the test suite with:

$ ./gradlew test

Pass the environment variable UPDATE_GOLDENS=y to update the golden files.

Project contains couple hundreds testcases, usually there is a separate testcase per .js/.ts input file. In order to run specific test use gradle filter option:

$ ./gradlew test --test "*aliased_enums*"

Running tests from an IDE

The gradle configuration makes sure that tests use the locally installed clang-format by setting the system property gents.clangFormat, see build.gradle. Make sure to configure your IDE's test runner to pass the same property for reproducible results.

To run single testcase of parameterized tests first run all tests from IDE and then IDE allows to rerun specific testcase by clicking on its passed/failed name. At least IntelliJ Idea supports it.

Java Formatting

The project verifies that all java source is formatted properly with (google-java-format)[https://github.com/google/google-java-format]. The verification happens through gradle verifyGoogleJavaFormat.

You can manually reformat the source with gradle googleJavaFormat.