testdata IDEA-131282

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/regression/IDEA131282.java

@@ -0,0 +1,79 @@
+import java.util.HashMap;
+import java.util.Map;
+import java.util.stream.Collector;
+import java.util.stream.Collectors;
+
+class Reducer {
+  private final Map<String, Dto> dtos = new HashMap<>();
+
+  private void publishToOpxl() {
+    Collector<Intermediate, ?, Map<String, Integer>> reducer =
+      Collectors.groupingBy(Intermediate::name, Collectors.summingInt(Intermediate::value));
+
+    Map<String, Map<String,Integer>> green = dtos.values()
+      .stream()
+      .flatMap(dto -> dto.getNestedThings()
+        .values()
+        .stream()
+        .map(ppd -> new Intermediate(dto.getName(),
+                                     ppd.getKey(),
+                                     ppd.getValue())))
+      .collect(
+        Collectors.groupingBy(
+          Intermediate::key,
+          reducer
+        ));
+
+    Map<String, Map<String,Integer>> red = dtos.values()
+      .stream()
+      .flatMap(dto -> dto.getNestedThings()
+        .values()
+        .stream()
+        .map(ppd -> new Intermediate(dto.getName(),
+                                     ppd.getKey(),
+                                     ppd.getValue())))
+      .collect(
+        Collectors.groupingBy(
+          Intermediate::key,
+          Collectors.groupingBy(Intermediate::name, Collectors.summingInt(Intermediate::value))
+        ));
+
+  }
+
+  public static class Intermediate {
+    public final String name;
+    public final String key;
+    public final int value;
+
+    public Intermediate(String name, String key, int value) {
+      this.name = name;
+      this.key = key;
+      this.value = value;
+    }
+
+    public String name() {
+      return name;
+    }
+
+    public String key() {
+      return key;
+    }
+
+    public int value() {
+      return value;
+    }
+  }
+}
+
+interface Dto {
+
+  String getName();
+
+  Map<String, Dto2> getNestedThings();
+}
+
+interface Dto2 {
+  String getKey();
+
+  int getValue();
+}