testdata for IDEA-147873

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/newMethodRef/IDEA147873.java

@@ -0,0 +1,18 @@
+import java.util.*;
+
+class Test {
+
+  public static LinkedMultiValueMap<String, String> main(Map<String, String> queryParams) {
+      return queryParams.entrySet().stream()
+      .collect(LinkedMultiValueMap<String, String>::new, (m, e) -> m.add(e.getKey(), e.getValue()),
+               LinkedMultiValueMap::putAll);
+  }
+}
+class LinkedMultiValueMap<K, V> extends HashMap<K, List<V>> {
+  public LinkedMultiValueMap() {}
+  public LinkedMultiValueMap(int initialCapacity) {}
+  public LinkedMultiValueMap(Map<K, List<V>> otherMap) {}
+
+  public void add(K key, V value) {}
+  public void putAll(Map<? extends K, ? extends List<V>> m) {}
+}

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

@@ -454,6 +454,10 @@ public class NewMethodRefHighlightingTest extends LightDaemonAnalyzerTestCase {
     doTest();
   }
 
+  public void testIDEA147873() throws Exception {
+    doTest();
+  }
+
   private void doTest() {
     doTest(false);
   }