Java inspection: Simplify stream API call chains (IDEA-140724, IDEA-156324)

java/java-tests/testData/inspection/streamApiCallChains/afterAsListArrayStream.java

@@ -0,0 +1,9 @@
+// "Replace Arrays.asList().stream() with Arrays.stream()" "true"
+
+import java.util.Arrays;
+
+class AsListArrayStream {
+  String max(String[] args) {
+    return Arrays.stream(args).max(String::compareTo);
+  }
+}

java/java-tests/testData/inspection/streamApiCallChains/afterAsListLiteralStream.java

@@ -0,0 +1,10 @@
+// "Replace Arrays.asList().stream() with Stream.of()" "true"
+
+import java.util.Arrays;
+import java.util.stream.Stream;
+
+class AsListLiteralStream {
+  Stream<String> abc() {
+    return Stream.of("a", "b", "c");
+  }
+}

java/java-tests/testData/inspection/streamApiCallChains/afterStreamForEachLambda.java

@@ -0,0 +1,11 @@
+// "Replace Collection.stream().forEach() with Collection.forEach()" "true"
+
+import java.util.Arrays;
+import java.util.Collection;
+
+class Test {
+  void print() {
+    Collection<Character> def = Arrays.asList('d', 'e', 'f');
+    def.forEach(c -> System.out.print(" " + c));
+  }
+}

java/java-tests/testData/inspection/streamApiCallChains/afterStreamForEachMethodRef.java

@@ -0,0 +1,11 @@
+// "Replace Collection.stream().forEach() with Collection.forEach()" "true"
+
+import java.util.Arrays;
+import java.util.Collection;
+
+class Test {
+  void print() {
+    Collection<Character> def = Arrays.asList('d', 'e', 'f');
+    def.forEach(System.out::print);
+  }
+}

java/java-tests/testData/inspection/streamApiCallChains/beforeAsListArrayStream.java

@@ -0,0 +1,9 @@
+// "Replace Arrays.asList().stream() with Arrays.stream()" "true"
+
+import java.util.Arrays;
+
+class AsListArrayStream {
+  String max(String[] args) {
+    return Arrays.asL<caret>ist(args).stream().max(String::compareTo);
+  }
+}

java/java-tests/testData/inspection/streamApiCallChains/beforeAsListLiteralStream.java

@@ -0,0 +1,10 @@
+// "Replace Arrays.asList().stream() with Stream.of()" "true"
+
+import java.util.Arrays;
+import java.util.stream.Stream;
+
+class AsListLiteralStream {
+  Stream<String> abc() {
+    return Arrays.asList("a", "b", "c").stre<caret>am();
+  }
+}

java/java-tests/testData/inspection/streamApiCallChains/beforeStreamForEachLambda.java

@@ -0,0 +1,11 @@
+// "Replace Collection.stream().forEach() with Collection.forEach()" "true"
+
+import java.util.Arrays;
+import java.util.Collection;
+
+class Test {
+  void print() {
+    Collection<Character> def = Arrays.asList('d', 'e', 'f');
+    def.st<caret>ream().forEach(c -> System.out.print(" " + c));
+  }
+}

java/java-tests/testData/inspection/streamApiCallChains/beforeStreamForEachMethodRef.java

@@ -0,0 +1,11 @@
+// "Replace Collection.stream().forEach() with Collection.forEach()" "true"
+
+import java.util.Arrays;
+import java.util.Collection;
+
+class Test {
+  void print() {
+    Collection<Character> def = Arrays.asList('d', 'e', 'f');
+    def.stream().forE<caret>ach(System.out::print);
+  }
+}

java/java-tests/testSrc/com/intellij/codeInspection/SimplifyStreamApiCallChainsInspectionTest.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2000-2016 JetBrains s.r.o.
+ *
+ * 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.intellij.codeInspection;
+
+import com.intellij.codeInsight.daemon.quickFix.LightQuickFixParameterizedTestCase;
+import com.intellij.openapi.projectRoots.Sdk;
+import com.intellij.testFramework.IdeaTestUtil;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * @author Pavel.Dolgov
+ */
+public class SimplifyStreamApiCallChainsInspectionTest extends LightQuickFixParameterizedTestCase {
+
+  @NotNull
+  @Override
+  protected LocalInspectionTool[] configureLocalInspectionTools() {
+    return new LocalInspectionTool[]{new SimplifyStreamApiCallChainsInspection()};
+  }
+
+  public void test() throws Exception {
+    doAllTests();
+  }
+
+  @Override
+  protected Sdk getProjectJDK() {
+    return IdeaTestUtil.getMockJdk18();
+  }
+
+  @Override
+  protected String getBasePath() {
+    return "/inspection/streamApiCallChains";
+  }
+}