base/tests/unittests/com/google/idea/blaze/base/model/primitives/LabelTest.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.model.primitives;

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

import com.google.idea.blaze.base.BlazeTestCase;
import com.google.idea.common.experiments.ExperimentService;
import com.google.idea.common.experiments.MockExperimentService;
import org.jetbrains.annotations.NotNull;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Tests label validation */
@RunWith(JUnit4.class)
public class LabelTest extends BlazeTestCase {

  @Override
  protected void initTest(
      @NotNull Container applicationServices, @NotNull Container projectServices) {
    super.initTest(applicationServices, projectServices);
    applicationServices.register(ExperimentService.class, new MockExperimentService());
  }

  @Test
  public void testValidatePackage() {
    // Legal names
    assertThat(Label.validatePackagePath("foo")).isTrue();
    assertThat(Label.validatePackagePath("f")).isTrue();
    assertThat(Label.validatePackagePath("fooBAR")).isTrue();
    assertThat(Label.validatePackagePath("foo/bar")).isTrue();
    assertThat(Label.validatePackagePath("f9oo")).isTrue();
    assertThat(Label.validatePackagePath("f_9oo")).isTrue();
    assertThat(Label.validatePackagePath("Foo")).isTrue();
    assertThat(Label.validatePackagePath("9.oo")).isTrue();
    // This is not advised but is technically legal
    assertThat(Label.validatePackagePath("")).isTrue();

    // Illegal names
    assertThat(Label.validatePackagePath("/foo")).isFalse();
    assertThat(Label.validatePackagePath("foo/")).isFalse();
    assertThat(Label.validatePackagePath("foo//bar")).isFalse();
  }

  @Test
  public void testValidateLabel() {
    // Valid labels
    assertThat(Label.validate("//foo:bar")).isTrue();
    assertThat(Label.validate("//foo/baz:bar")).isTrue();
    assertThat(Label.validate("//:bar")).isTrue();

    // Invalid labels
    assertThat(Label.validate("//foo")).isFalse();
    assertThat(Label.validate("foo")).isFalse();
    assertThat(Label.validate("foo:bar")).isFalse();
  }

  @Test
  public void testFactoryMethod() {
    String fullLabel = "//package/path:target/name";
    Label label = Label.create(fullLabel);
    assertThat(label.toString()).isEqualTo(fullLabel);
    assertThat(label.blazePackage()).isEqualTo(new WorkspacePath("package/path"));
    assertThat(label.targetName()).isEqualTo(TargetName.create("target/name"));
  }

  @Test
  public void testFactoryMethodExternalWorkspace() {
    String fullLabel = "@ext_workspace//package/path:target/name";
    Label label = Label.create(fullLabel);
    assertThat(label.toString()).isEqualTo(fullLabel);
    assertThat(label.externalWorkspaceName()).isEqualTo("ext_workspace");
    assertThat(label.blazePackage()).isEqualTo(new WorkspacePath("package/path"));
    assertThat(label.targetName()).isEqualTo(TargetName.create("target/name"));
  }

  @Test
  public void testConstructor() {
    String externalWorkspaceName = "ext_workspace";
    WorkspacePath packagePath = new WorkspacePath("package/path");
    TargetName targetName = TargetName.create("target/name");

    Label label = Label.create(externalWorkspaceName, packagePath, targetName);
    assertThat(label.toString()).isEqualTo("@ext_workspace//package/path:target/name");
    assertThat(label.externalWorkspaceName()).isEqualTo(externalWorkspaceName);
    assertThat(label.blazePackage()).isEqualTo(packagePath);
    assertThat(label.targetName()).isEqualTo(targetName);
  }

  @Test
  public void testConstructorExternalWorkspace() {
    WorkspacePath packagePath = new WorkspacePath("package/path");
    TargetName targetName = TargetName.create("target/name");

    Label label = Label.create(packagePath, targetName);
    assertThat(label.toString()).isEqualTo("//package/path:target/name");
    assertThat(label.blazePackage()).isEqualTo(packagePath);
    assertThat(label.targetName()).isEqualTo(targetName);
  }
}