Test function types in decompiler

idea/testData/libraries/decompiledText/FunctionTypes.expected.kt

@@ -0,0 +1,14 @@
+// IntelliJ API Decompiler stub source generated from a class file
+// Implementation of methods is not available
+
+package test
+
+internal final class FunctionTypes() {
+    public final fun <A> (A.(A) -> A)?.bar(): kotlin.Unit { /* compiled code */ }
+
+    public final fun <IP, R, P1> ((IP) -> R).compose(f: (P1) -> IP): (P1) -> R { /* compiled code */ }
+
+    public final fun <IP, R, P1> ((IP) -> R).compose2(f: (P1) -> IP): (P1) -> R { /* compiled code */ }
+
+    public final fun <A> (A.(A) -> A).foo(): kotlin.Unit { /* compiled code */ }
+}

idea/testData/libraries/decompiledText/FunctionTypes/FunctionTypes.kt

@@ -0,0 +1,17 @@
+package test
+
+class FunctionTypes {
+    public fun<IP, R, P1> Function1<IP, R>.compose(f: (P1) -> IP): (P1) -> R {
+        return {(p1: P1) -> this(f(p1)) }
+    }
+
+    public fun<IP, R, P1> ((IP) -> R).compose2(f: (P1) -> IP) : (P1) -> R {
+        return {(p1: P1) -> this(f(p1)) }
+    }
+
+    public fun <A> (A.(A) -> A).foo() {
+    }
+
+    public fun <A> (A.(A) -> A)?.bar() {
+    }
+}

idea/tests/org/jetbrains/jet/plugin/libraries/DecompiledTextTestGenerated.java

@@ -61,6 +61,12 @@ public class DecompiledTextTestGenerated extends AbstractDecompiledTextTest {
         doTest(fileName);
     }
 
+    @TestMetadata("FunctionTypes")
+    public void testFunctionTypes() throws Exception {
+        String fileName = JetTestUtils.navigationMetadata("idea/testData/libraries/decompiledText/FunctionTypes/");
+        doTest(fileName);
+    }
+
     @TestMetadata("NestedClasses")
     public void testNestedClasses() throws Exception {
         String fileName = JetTestUtils.navigationMetadata("idea/testData/libraries/decompiledText/NestedClasses/");