base/tests/integrationtests/com/google/idea/blaze/base/lang/buildfile/completion/ArgumentCompletionContributorTest.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.completion;

import static com.google.common.truth.Truth.assertThat;

import com.google.idea.blaze.base.lang.buildfile.BuildFileIntegrationTestCase;
import com.google.idea.blaze.base.lang.buildfile.psi.BuildFile;
import com.intellij.codeInsight.lookup.LookupElement;
import com.intellij.openapi.editor.Editor;
import com.intellij.testFramework.fixtures.CompletionAutoPopupTester;

/** Tests for code completion of funcall arguments. */
public class ArgumentCompletionContributorTest extends BuildFileIntegrationTestCase {

  private CompletionAutoPopupTester completionTester;

  public void doSetup() {
    super.doSetup();
    completionTester = new CompletionAutoPopupTester(testFixture);
  }

  @Override
  protected boolean runInDispatchThread() {
    return false;
  }

  @Override
  protected void invokeTestRunnable(Runnable runnable) throws Exception {
    completionTester.runWithAutoPopupEnabled(runnable);
  }

  public void testIncompleteFuncall() {
    BuildFile file =
        createBuildFile(
            "BUILD", "def function(name, deps, srcs):", "  # empty function", "function(d");

    Editor editor = openFileInEditor(file.getVirtualFile());
    setCaretPosition(editor, 2, "function(n".length());

    LookupElement[] completionItems = testFixture.completeBasic();
    assertThat(completionItems).isNull();

    assertFileContents(
        file, "def function(name, deps, srcs):", "  # empty function", "function(deps");
  }

  public void testExistingKeywordArg() {
    BuildFile file =
        createBuildFile(
            "BUILD",
            "def function(name, deps, srcs):",
            "  # empty function",
            "function(name = \"lib\")");

    Editor editor = openFileInEditor(file.getVirtualFile());
    setCaretPosition(editor, 2, "function(".length());

    String[] completionItems = getCompletionItemsAsStrings();
    assertThat(completionItems).hasLength(4);
    assertThat(completionItems).asList().containsAllOf("name", "deps", "srcs", "function");
  }

  public void testNoArgumentCompletionInComment() {
    BuildFile file =
        createBuildFile(
            "BUILD", "def function(name, deps, srcs):", "  # empty function", "function(#");

    Editor editor = openFileInEditor(file.getVirtualFile());
    setCaretPosition(editor, 2, "function(#".length());

    completionTester.typeWithPauses("n");
    assertNull(testFixture.getLookup());
  }
}