testdata for IDEA-132379

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newMethodRef/IDEA132379.java

@@ -0,0 +1,32 @@
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.Map;
+import java.util.Set;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.stream.Collectors;
+
+class Java8Test {
+  public void testCollectorWithProvider() {
+    Map<String, Set<String>> map1 = new HashMap<>();
+    map1.put("key", new HashSet<>(Arrays.asList("value", "anotherValue")));
+
+    Map<String, Set<Integer>> map2 =
+      map1.entrySet().stream()
+        .collect(Collectors.toMap(
+                   Map.Entry::getKey,
+                   entry -> entry.getValue().stream().map(String::length).collect(Collectors.toSet()),
+                   (s1, s2) -> {
+                     if (s1.equals(s2)) {
+                       throw new IllegalArgumentException("duplicate not allowed");
+                     }
+                     return null;
+                   },
+                   ConcurrentHashMap::new
+                 )
+        );
+
+    System.out.println("map1: " + map1);
+    System.out.println("map2: " + map2);
+  }
+}

java/java-tests/testSrc/com/intellij/codeInsight/daemon/lambda/NewMethodRefHighlightingTest.java

@@ -370,6 +370,10 @@ public class NewMethodRefHighlightingTest extends LightDaemonAnalyzerTestCase {
     doTest();
   }
 
+  public void testIDEA132379() throws Exception {
+    doTest();
+  }
+
   private void doTest() {
     doTest(false);
   }