IDEA-176977 EnumSet.of().stream() can be simplified to Stream.of()

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

@@ -0,0 +1,23 @@
+// "Replace EnumSet.of().stream() with Stream.of()" "true"
+
+import java.util.EnumSet;
+import java.util.List;
+import java.util.stream.Stream;
+
+import static java.util.stream.Collectors.toList;
+
+
+public class Tests {
+  interface HasCode {
+    default String getCode() {return this.toString();}
+  }
+
+  enum Status implements HasCode {
+    Approved, Pending, Stored
+  }
+
+  void test() {
+    List<String> list = Stream.of(Status.Approved, (Status.Pending), Status.Stored)
+      .map(HasCode::getCode).collect(toList());
+  }
+}

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

@@ -0,0 +1,22 @@
+// "Replace EnumSet.of().stream() with Stream.of()" "true"
+
+import java.util.EnumSet;
+import java.util.List;
+
+import static java.util.stream.Collectors.toList;
+
+
+public class Tests {
+  interface HasCode {
+    default String getCode() {return this.toString();}
+  }
+
+  enum Status implements HasCode {
+    Approved, Pending, Stored
+  }
+
+  void test() {
+    List<String> list = EnumSet.of(Status.Approved, (Status.Pending), Status.Stored).st<caret>ream()
+      .map(HasCode::getCode).collect(toList());
+  }
+}

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

@@ -0,0 +1,22 @@
+// "Fix all 'Simplify stream API call chains' problems in file" "false"
+
+import java.util.EnumSet;
+import java.util.List;
+
+import static java.util.stream.Collectors.toList;
+
+
+public class Tests {
+  interface HasCode {
+    default String getCode() {return this.toString();}
+  }
+
+  enum Status implements HasCode {
+    Approved, Pending, Stored
+  }
+
+  void test() {
+    List<String> list = EnumSet.of().st<caret>ream()
+      .map(HasCode::getCode).collect(toList());
+  }
+}

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

@@ -0,0 +1,24 @@
+// "Fix all 'Simplify stream API call chains' problems in file" "false"
+
+import java.util.EnumSet;
+import java.util.List;
+
+import static java.util.stream.Collectors.toList;
+
+
+public class Tests {
+  interface HasCode {
+    default String getCode() {return this.toString();}
+  }
+
+  enum Status implements HasCode {
+    Approved, Pending, Stored;
+
+    static final Status Alias = Approved;
+  }
+
+  void test() {
+    List<String> list = EnumSet.of(Status.Approved, Status.Pending, Status.Stored, Status.Alias).stre<caret>am()
+      .map(HasCode::getCode).collect(toList());
+  }
+}

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

@@ -0,0 +1,22 @@
+// "Fix all 'Simplify stream API call chains' problems in file" "false"
+
+import java.util.EnumSet;
+import java.util.List;
+
+import static java.util.stream.Collectors.toList;
+
+
+public class Tests {
+  interface HasCode {
+    default String getCode() {return this.toString();}
+  }
+
+  enum Status implements HasCode {
+    Approved, Pending, Stored
+  }
+
+  void test() {
+    List<String> list = EnumSet.of(Status.Approved, Status.Pending, Status.Stored, Status.Approved).st<caret>ream()
+      .map(HasCode::getCode).collect(toList());
+  }
+}