Java: Mark service implementations as used if the service declaration is used (IDEA-169204)

java/java-tests/testData/inspection/unusedServiceImplementations/constructor/MyServiceImpl.java

@@ -0,0 +1,8 @@
+package my.impl;
+import my.api.MyService;
+
+public class MyServiceImpl implements MyService {
+  public MyServiceImpl() {}
+  @Override
+  public void foo() {}
+}

java/java-tests/testData/inspection/unusedServiceImplementations/constructor/expected.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<problems>
+</problems>

java/java-tests/testData/inspection/unusedServiceImplementations/implementation/MyServiceImpl.java

@@ -0,0 +1,7 @@
+package my.impl;
+import my.api.MyService;
+
+public class MyServiceImpl implements MyService {
+  @Override
+  public void foo() {}
+}

java/java-tests/testData/inspection/unusedServiceImplementations/implementation/expected.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<problems>
+</problems>

java/java-tests/testData/inspection/unusedServiceImplementations/provider/MyServiceImpl.java

@@ -0,0 +1,12 @@
+package my.impl;
+import my.api.MyService;
+
+public class MyServiceImpl {
+  public static MyService provider() {
+    return new MyService() {
+      @Override
+      public void foo() {
+      }
+    };
+  }
+}

java/java-tests/testData/inspection/unusedServiceImplementations/provider/expected.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<problems>
+</problems>

java/java-tests/testData/inspection/unusedServiceImplementations/unusedConstructor/MyServiceImpl.java

@@ -0,0 +1,8 @@
+package my.impl;
+import my.api.MyService;
+
+public class MyServiceImpl implements MyService {
+  public MyServiceImpl() {}
+  @Override
+  public void foo() {}
+}

java/java-tests/testData/inspection/unusedServiceImplementations/unusedConstructor/expected.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<problems>
+  <problem>
+    <file>MyServiceImpl.java</file>
+    <line>5</line>
+    <entry_point TYPE="java.module" FQNAME="M2" />
+    <problem_class severity="WARNING">unused</problem_class>
+    <description>Unused declaration</description>
+  </problem>
+</problems>

java/java-tests/testData/inspection/unusedServiceImplementations/unusedImplementation/MyServiceImpl.java

@@ -0,0 +1,7 @@
+package my.impl;
+import my.api.MyService;
+
+public class MyServiceImpl implements MyService {
+  @Override
+  public void foo() {}
+}

java/java-tests/testData/inspection/unusedServiceImplementations/unusedImplementation/expected.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<problems>
+  <problem>
+    <file>MyServiceImpl.java</file>
+    <line>4</line>
+    <entry_point TYPE="java.module" FQNAME="M2" />
+    <problem_class severity="WARNING">unused</problem_class>
+    <description>Unused declaration</description>
+  </problem>
+</problems>

java/java-tests/testData/inspection/unusedServiceImplementations/unusedProvider/MyServiceImpl.java

@@ -0,0 +1,12 @@
+package my.impl;
+import my.api.MyService;
+
+public class MyServiceImpl {
+  public static MyService provider() {
+    return new MyService() {
+      @Override
+      public void foo() {
+      }
+    };
+  }
+}

java/java-tests/testData/inspection/unusedServiceImplementations/unusedProvider/expected.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<problems>
+  <problem>
+    <file>MyServiceImpl.java</file>
+    <line>5</line>
+    <entry_point TYPE="java.module" FQNAME="M2" />
+    <problem_class severity="WARNING">unused</problem_class>
+    <description>Unused declaration</description>
+  </problem>
+</problems>