Run Java tests ============== 1. Build Closure Compiler jar with all tests: git clone https://github.com/google/closure-compiler.git cd closure-compiler ant all-classes-jar 2. Add test file to Eclipse and run tests in it. - Launch Eclipse. - File -> New -> Java Project. - Enter any project name, click "Next >". - On the tab "Source" click on the icon "Link additional source to project". - Select "third_party/closure_compiler/runner/test", click "Finish". - Click on the icon "Link additional source to project" once again. - Select "third_party/closure_compiler/runner/src", type a name "src2", click "Finish". - On the tab "Libraries" click "Add External JARs...". - Select "closure-compiler/build/compiler.jar", click "Finish" two times. - Open the class test/com.google.javascript.jscomp/ChromePassTest.java. - Run As -> JUnit Test. Run Python tests ================ Run in Shell: ./third_party/closure_compiler/runner/build_runner_jar.py ./third_party/closure_compiler/compiler_customization_test.py