lambda: simple inference in case of conditional expressions (IDEA-90812)

java/java-tests/testData/codeInsight/daemonCodeAnalyzer/lambda/highlighting/ConditionalExpr.java

@@ -0,0 +1,39 @@
+/*
+ * Copyright 2000-2012 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+class Test {
+  public interface I {
+    int m();
+  }
+
+  public interface I1 {
+    int m(int y);
+  }
+
+  {
+    boolean flag = true;
+    I i =  flag ? (() -> 123)   : (() -> 222);
+    I i1 =  flag ? (<error descr="Missing return value">() -> {}</error>)   : (() -> 222);
+    Object i2 =  flag ? (<error descr="Target type of a lambda conversion must be an interface">() -> 42</error>)   : (<error descr="Target type of a lambda conversion must be an interface">() -> 222</error>);
+    <error descr="Incompatible types. Found: '<lambda expression>', required: 'Test.I'">I i3 =  flag ? ((x) -> 42)   : (() -> 222);</error>
+    I i4 =  flag ? (() -> 42) : new I() {
+      @Override
+      public int m() {
+        return 0;  //To change body of implemented methods use File | Settings | File Templates.
+      }
+    };
+  }
+}
+