1 files changed, 93 insertions, 0 deletions
diff --git a/sonar-scanner-engine/src/test/java/org/sonar/scanner/task/TasksTest.java b/sonar-scanner-engine/src/test/java/org/sonar/scanner/task/TasksTest.java
new file mode 100644
index 00000000000..5875d1cf764
--- /dev/null
+++ b/sonar-scanner-engine/src/test/java/org/sonar/scanner/task/TasksTest.java
@@ -0,0 +1,93 @@
+/*
+ * SonarQube
+ * Copyright (C) 2009-2016 SonarSource SA
+ * mailto:contact AT sonarsource DOT com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+package org.sonar.scanner.task;
+
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+import org.sonar.api.task.Task;
+import org.sonar.api.task.TaskDefinition;
+import org.sonar.scanner.task.ListTask;
+import org.sonar.scanner.task.ScanTask;
+import org.sonar.scanner.task.Tasks;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class TasksTest {
+
+  @Rule
+  public ExpectedException thrown = ExpectedException.none();
+
+  @Test
+  public void should_get_definitions() {
+    Tasks tasks = new Tasks(new TaskDefinition[] {ScanTask.DEFINITION, ListTask.DEFINITION});
+    assertThat(tasks.definitions()).hasSize(2);
+  }
+
+  @Test
+  public void should_get_definition_by_key() {
+    Tasks tasks = new Tasks(new TaskDefinition[] {ScanTask.DEFINITION, ListTask.DEFINITION});
+    tasks.start();
+    assertThat(tasks.definition(ListTask.DEFINITION.key())).isEqualTo(ListTask.DEFINITION);
+  }
+
+  @Test
+  public void should_return_null_if_task_not_found() {
+    Tasks tasks = new Tasks(new TaskDefinition[] {ScanTask.DEFINITION, ListTask.DEFINITION});
+
+    assertThat(tasks.definition("not-exists")).isNull();
+  }
+
+  @Test
+  public void should_fail_on_duplicated_keys() {
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("Task 'foo' is declared twice");
+
+    new Tasks(new TaskDefinition[] {
+      TaskDefinition.builder().key("foo").taskClass(FakeTask1.class).description("foo1").build(),
+      TaskDefinition.builder().key("foo").taskClass(FakeTask2.class).description("foo2").build()
+    });
+  }
+
+  @Test
+  public void should_fail_on_duplicated_class() {
+    Tasks tasks = new Tasks(new TaskDefinition[] {
+      TaskDefinition.builder().key("foo1").taskClass(FakeTask1.class).description("foo1").build(),
+      TaskDefinition.builder().key("foo2").taskClass(FakeTask1.class).description("foo1").build()
+    });
+
+    thrown.expect(IllegalStateException.class);
+    thrown.expectMessage("Task 'org.sonar.scanner.task.TasksTest$FakeTask1' is defined twice: first by 'foo1' and then by 'foo2'");
+
+    tasks.start();
+  }
+
+  private static class FakeTask1 implements Task {
+    public void execute() {
+    }
+  }
+
+  private static class FakeTask2 implements Task {
+    public void execute() {
+    }
+
+  }
+
+}