redundant cast: do not raise if result in bad return type in lambda expression (IDEA-138927)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/redundantCast/PreventBadReturnTypeInReturnExpression.java

@@ -0,0 +1,7 @@
+import java.util.stream.Stream;
+
+class Test {
+  public void filterByBoolean(Stream<Object[]> stream) {
+    stream.filter(it -> (Boolean) it[0]);
+  }
+}

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

@@ -38,6 +38,8 @@ public class LambdaRedundantCastTest extends LightDaemonAnalyzerTestCase {
   public void testSer() { doTest(); }
   public void testLambdaReturnExpressions() { doTest(); }
   public void testLambdaReturnExpressions1() { doTest(); }
+  public void testPreventBadReturnTypeInReturnExpression() { doTest(); }
+
   private void doTest() {
     doTest(BASE_PATH + "/" + getTestName(false) + ".java", true, false);
   }