base/tests/integrationtests/com/google/idea/blaze/base/lang/buildfile/editor/BuildBraceMatcherTest.java

/*
 * Copyright 2016 The Bazel Authors. All rights reserved.
 *
 * 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.idea.blaze.base.lang.buildfile.editor;

import com.google.common.base.Joiner;
import com.google.idea.blaze.base.lang.buildfile.BuildFileIntegrationTestCase;
import com.intellij.psi.PsiFile;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Test brace matching (auto-inserting closing braces when appropriate) */
@RunWith(JUnit4.class)
public class BuildBraceMatcherTest extends BuildFileIntegrationTestCase {

  private PsiFile setInput(String... fileContents) {
    return testFixture.configureByText("BUILD", Joiner.on("\n").join(fileContents));
  }

  @Test
  public void testClosingParenInserted() {
    PsiFile file = setInput("java_library<caret>");

    performTypingAction(testFixture.getEditor(), '(');

    assertFileContents(file, "java_library()");
  }

  @Test
  public void testClosingBraceInserted() {
    PsiFile file = setInput("<caret>");

    performTypingAction(testFixture.getEditor(), '{');

    assertFileContents(file, "{}");
  }

  @Test
  public void testClosingBracketInserted() {
    PsiFile file = setInput("<caret>");

    performTypingAction(testFixture.getEditor(), '[');

    assertFileContents(file, "[]");
  }

  @Test
  public void testNoClosingBracketInsertedIfLaterDanglingRBracket() {
    PsiFile file = setInput("java_library(", "    srcs =<caret> 'source.java']", ")");

    performTypingAction(testFixture.getEditor(), '[');

    assertFileContents(file, "java_library(", "    srcs =[ 'source.java']", ")");
  }

  @Test
  public void testClosingBracketInsertedIfFollowedByWhitespace() {
    PsiFile file = setInput("java_library(", "    srcs =<caret> 'source.java'", ")");

    performTypingAction(testFixture.getEditor(), '[');

    assertFileContents(file, "java_library(", "    srcs =[] 'source.java'", ")");
  }

  @Test
  public void testNoClosingBraceInsertedWhenFollowedByIdentifier() {
    PsiFile file = setInput("hello = <caret>test");

    performTypingAction(testFixture.getEditor(), '(');

    assertFileContents(file, "hello = (test");

    file = setInput("hello = <caret>test");

    performTypingAction(testFixture.getEditor(), '[');

    assertFileContents(file, "hello = [test");

    file = setInput("hello = <caret>test");

    performTypingAction(testFixture.getEditor(), '{');

    assertFileContents(file, "hello = {test");
  }
}