IDEA-207874 Inspection to replace Map.keySet().contains(K) with Map.containsKey(K)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantCollectionOperation/afterMapKeySetContains.java

@@ -0,0 +1,10 @@
+// "Replace with 'Map.containsKey()'" "true"
+import java.util.Map;
+
+class Test {
+  void test(Map<String, String> map, String key) {
+    if(map.containsKey(key)) {
+      System.out.println("contains");
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantCollectionOperation/afterMapValuesContains.java

@@ -0,0 +1,10 @@
+// "Replace with 'Map.containsValue()'" "true"
+import java.util.Map;
+
+class Test {
+  void test(Map<String, String> map, String key) {
+    if(map.containsValue(key)) {
+      System.out.println("contains");
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantCollectionOperation/beforeMapKeySetContains.java

@@ -0,0 +1,10 @@
+// "Replace with 'Map.containsKey()'" "true"
+import java.util.Map;
+
+class Test {
+  void test(Map<String, String> map, String key) {
+    if(map.keySet().cont<caret>ains(key)) {
+      System.out.println("contains");
+    }
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/quickFix/redundantCollectionOperation/beforeMapValuesContains.java

@@ -0,0 +1,10 @@
+// "Replace with 'Map.containsValue()'" "true"
+import java.util.Map;
+
+class Test {
+  void test(Map<String, String> map, String key) {
+    if(map.values().cont<caret>ains(key)) {
+      System.out.println("contains");
+    }
+  }
+}