Add sensor logging message that SonarTS does nothing (#885)

sonarts-sq-plugin/sonar-typescript-plugin/src/main/java/org/sonar/plugin/typescript/EmptyTsSensor.java

@@ -0,0 +1,43 @@
+/*
+ * SonarTS
+ * Copyright (C) 2017-2019 SonarSource SA
+ * mailto:info 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.plugin.typescript;
+
+import org.sonar.api.batch.sensor.Sensor;
+import org.sonar.api.batch.sensor.SensorContext;
+import org.sonar.api.batch.sensor.SensorDescriptor;
+import org.sonar.api.utils.log.Logger;
+import org.sonar.api.utils.log.Loggers;
+
+public class EmptyTsSensor implements Sensor {
+
+  private static final Logger LOG = Loggers.get(EmptyTsSensor.class);
+
+  @Override
+  public void describe(SensorDescriptor sensorDescriptor) {
+    sensorDescriptor
+      .onlyOnLanguage("ts")
+      .name("SonarTS");
+  }
+
+  @Override
+  public void execute(SensorContext sensorContext) {
+    LOG.info("Since SonarTS v2.0, TypeScript analysis is performed by SonarJS analyzer v6.0 or later. No TypeScript analysis is performed by SonarTS.");
+  }
+}

sonarts-sq-plugin/sonar-typescript-plugin/src/main/java/org/sonar/plugin/typescript/TypeScriptPlugin.java

@@ -26,5 +26,7 @@ public class TypeScriptPlugin implements Plugin {
   @Override
   public void define(Context context) {
     // This plugin doesn't define any extension, TypeScript analysis is migrated to SonarJS
+    // EmptyTsSensor is used to log message that this plugin does nothing
+    context.addExtension(EmptyTsSensor.class);
   }
 }

sonarts-sq-plugin/sonar-typescript-plugin/src/test/java/org/sonar/plugin/typescript/EmptyTsSensorTest.java

@@ -0,0 +1,51 @@
+/*
+ * SonarTS
+ * Copyright (C) 2017-2019 SonarSource SA
+ * mailto:info 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.plugin.typescript;
+
+import java.io.File;
+import org.junit.Test;
+import org.sonar.api.batch.sensor.internal.DefaultSensorDescriptor;
+import org.sonar.api.batch.sensor.internal.SensorContextTester;
+import org.sonar.api.utils.log.LogTester;
+import org.sonar.api.utils.log.LoggerLevel;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class EmptyTsSensorTest {
+
+  @org.junit.Rule
+  public LogTester logTester = new LogTester();
+
+  @Test
+  public void descriptor() {
+    DefaultSensorDescriptor sensorDescriptor = new DefaultSensorDescriptor();
+    new EmptyTsSensor().describe(sensorDescriptor);
+
+    assertThat(sensorDescriptor.languages()).containsExactly("ts");
+    assertThat(sensorDescriptor.name()).isEqualTo("SonarTS");
+  }
+
+  @Test
+  public void log_message() {
+    new EmptyTsSensor().execute(SensorContextTester.create(new File("")));
+    assertThat(logTester.logs(LoggerLevel.INFO))
+      .containsExactly("Since SonarTS v2.0, TypeScript analysis is performed by SonarJS analyzer v6.0 or later. No TypeScript analysis is performed by SonarTS.");
+  }
+}

sonarts-sq-plugin/sonar-typescript-plugin/src/test/java/org/sonar/plugin/typescript/TypeScriptPluginTest.java

@@ -37,6 +37,6 @@ public void count_extensions() {
     Plugin.Context context = new Plugin.Context(runtime);
     Plugin underTest = new TypeScriptPlugin();
     underTest.define(context);
-    assertThat(context.getExtensions()).hasSize(0);
+    assertThat(context.getExtensions()).hasSize(1);
   }
 }