ClosureCommandLineCompilerTest.java

/*
 * Copyright 2015 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.google.common.css.compiler.commandline;

import com.google.common.css.ExitCodeHandler;
import com.google.common.css.JobDescription;
import com.google.common.css.JobDescriptionBuilder;
import com.google.common.css.SourceCode;
import com.google.common.css.compiler.ast.ErrorManager;
import com.google.common.css.compiler.ast.testing.NewFunctionalTestBase;
import com.google.common.io.Files;

import junit.framework.TestCase;

import java.io.File;

public class ClosureCommandLineCompilerTest extends TestCase {

  static final ExitCodeHandler EXIT_CODE_HANDLER =
      new ExitCodeHandler() {
        @Override
        public void processExitCode(int exitCode) {
          fail("compiler exited with code: " + exitCode);
        }
      };

  public void testMixinPropagation() throws Exception {
    ErrorManager errorManager = new NewFunctionalTestBase.TestErrorManager(new String[0]);

    SourceCode def =
        new SourceCode(
            "def.gss", "@defmixin spriteUrl() {  background: url('sprite.png') no-repeat; }");
    SourceCode call = new SourceCode("call.gss", ".example { @mixin spriteUrl(); }");

    JobDescription job =
        new JobDescriptionBuilder()
            .addInput(def)
            .addInput(call)
            .setAllowDefPropagation(true)
            .getJobDescription();

    ClosureCommandLineCompiler compiler =
        new ClosureCommandLineCompiler(job, EXIT_CODE_HANDLER, errorManager);

    String output = compiler.execute(null /* renameFile */, null /* sourcemapFile */);

    assertEquals(".example{background:url('sprite.png') no-repeat}", output);
  }


  public void testAllowDefPropagationDefaultsToTrue() throws Exception {
    ClosureCommandLineCompiler.Flags flags =
        ClosureCommandLineCompiler.parseArgs(new String[] {"/dev/null"}, EXIT_CODE_HANDLER);
    JobDescription jobDescription = flags.createJobDescription();
    assertTrue(jobDescription.allowDefPropagation);
  }


  public void testEmptyImportBlocks() throws Exception {
    // See b/29995881
    ErrorManager errorManager = new NewFunctionalTestBase.TestErrorManager(new String[0]);

    JobDescription job = new JobDescriptionBuilder()
      .addInput(new SourceCode("main.css", "@import 'common.css';"))
      .addInput(new SourceCode("common.css", "/* common */"))
      .setOptimizeStrategy(JobDescription.OptimizeStrategy.SAFE)
      .setCreateSourceMap(true)
      .getJobDescription();

    File outputDir = Files.createTempDir();
    File sourceMapFile = new File(outputDir, "sourceMap");

    String compiledCss = new ClosureCommandLineCompiler(
        job, EXIT_CODE_HANDLER, errorManager)
        .execute(null /*renameFile*/, sourceMapFile);

    // The symptom was an IllegalStateException trapped by the compiler that
    // resulted in the exit handler being called which causes fail(...),
    // so if control reaches here, we're ok.

    assertNotNull(compiledCss);
  }
}