import org.sonar.api.BatchExtension; //导入依赖的package包/类
@Test
public void useClassAnnotationsToSortExtensions() {
  BatchExtension a = new ClassDependedUpon();
  BatchExtension b = new ClassDependsUpon();

  ScannerExtensionDictionnary selector = newSelector(a, b);
  List<BatchExtension> extensions = Lists.newArrayList(selector.select(BatchExtension.class, null, true));

  assertThat(extensions).hasSize(2);
  assertThat(extensions.get(0)).isEqualTo(a);
  assertThat(extensions.get(1)).isEqualTo(b);

  // different initial order
  selector = newSelector(b, a);
  extensions = Lists.newArrayList(selector.select(BatchExtension.class, null, true));

  assertThat(extensions).hasSize(2);
  assertThat(extensions.get(0)).isEqualTo(a);
  assertThat(extensions.get(1)).isEqualTo(b);
}
 

import org.sonar.api.BatchExtension; //导入依赖的package包/类
@Test
public void useClassAnnotationsOnInterfaces() {
  BatchExtension a = new InterfaceDependedUpon() {
  };
  BatchExtension b = new InterfaceDependsUpon() {
  };

  ScannerExtensionDictionnary selector = newSelector(a, b);
  List<BatchExtension> extensions = Lists.newArrayList(selector.select(BatchExtension.class, null, true));

  assertThat(extensions).hasSize(2);
  assertThat(extensions.get(0)).isEqualTo(a);
  assertThat(extensions.get(1)).isEqualTo(b);

  // different initial order
  selector = newSelector(b, a);
  extensions = Lists.newArrayList(selector.select(BatchExtension.class, null, true));

  assertThat(extensions).hasSize(2);
  assertThat(extensions.get(0)).isEqualTo(a);
  assertThat(extensions.get(1)).isEqualTo(b);
}
 

import org.sonar.api.BatchExtension; //导入依赖的package包/类
@Test
public void checkProject() {
  BatchExtension ok = new CheckProjectOK();
  BatchExtension ko = new CheckProjectKO();

  ScannerExtensionDictionnary selector = newSelector(ok, ko);
  List<BatchExtension> extensions = Lists.newArrayList(selector.select(BatchExtension.class,
    new Project(ProjectDefinition.create().setKey("key")), true));

  assertThat(extensions).hasSize(1);
  assertThat(extensions.get(0)).isInstanceOf(CheckProjectOK.class);
}
 

import org.sonar.api.BatchExtension; //导入依赖的package包/类
@Test
public void dependsUponPhase() {
  BatchExtension pre = new PreSensor();
  BatchExtension post = new PostSensor();

  ScannerExtensionDictionnary selector = newSelector(post, pre);
  List extensions = Lists.newArrayList(selector.select(BatchExtension.class, null, true));

  assertThat(extensions).hasSize(2);
  assertThat(extensions.get(0)).isEqualTo(pre);
  assertThat(extensions.get(1)).isEqualTo(post);
}
 

import org.sonar.api.BatchExtension; //导入依赖的package包/类
@Test
public void dependsUponInheritedPhase() {
  BatchExtension pre = new PreSensorSubclass();
  BatchExtension post = new PostSensorSubclass();

  ScannerExtensionDictionnary selector = newSelector(post, pre);
  List extensions = Lists.newArrayList(selector.select(BatchExtension.class, null, true));

  assertThat(extensions).hasSize(2);
  assertThat(extensions.get(0)).isEqualTo(pre);
  assertThat(extensions.get(1)).isEqualTo(post);
}