testdata for IDEA-123366

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newMethodRef/IDEA123366.java

@@ -0,0 +1,18 @@
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+class MyClass {
+  private static void test() {
+    List<String> collect = Arrays.asList("foo", "bar")
+      .stream()
+      .flatMap(MyClass::mapper)
+      .filter(s -> s.startsWith("foo"))
+      .collect(Collectors.toList());
+  }
+
+  private static Stream<String> mapper(String s) {
+    return Stream.of(s);
+  }
+}

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newMethodRef/IDEA123366comment.java

@@ -0,0 +1,49 @@
+
+import java.util.Arrays;
+import java.util.List;
+import java.util.function.Function;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+class MethodReferenceTest {
+
+  private final List<String> strings = Arrays.asList("One,Two", "Three,Four,Five");
+
+  public static Stream<String> split(String csv) {
+    return Arrays.asList(csv.split(",")).stream();
+  }
+
+  public void testMethodReference() {
+    List<String> list = strings.stream()
+      .flatMap(MethodReferenceTest::split)
+      .collect(Collectors.toList());
+
+  }
+
+  public void testLambda() {
+    List<String> list = strings.stream()
+      .flatMap((t) -> MethodReferenceTest.split(t))
+      .collect(Collectors.toList());
+  }
+
+  public void testMethodReferenceWithCast() {
+    List<String> list = strings.stream()
+      .flatMap((Function<String,Stream<String>>)MethodReferenceTest::split)
+      .collect(Collectors.toList());
+
+  }
+
+  public void testAnonymousInnerClass() {
+    List<String> strings = Arrays.asList("One,Two", "Three,Four,Five");
+
+    List<String> list = strings.stream()
+      .flatMap(new Function<String, Stream<String>>() {
+        @Override
+        public Stream<String> apply(String s) {
+          return Arrays.asList(s.split(",")).stream();
+        }
+      })
+      .collect(Collectors.toList());
+
+  }
+}