Test for KT-22527

plugins/uast-kotlin/tests/AbstractKotlinExpressionValueTest.kt

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.uast.test.kotlin
+
+import org.jetbrains.uast.UElement
+import org.jetbrains.uast.UExpression
+import org.jetbrains.uast.UFile
+import org.jetbrains.uast.evaluation.uValueOf
+import org.jetbrains.uast.visitor.UastVisitor
+
+abstract class AbstractKotlinExpressionValueTest : AbstractKotlinUastTest() {
+
+    override fun check(testName: String, file: UFile) {
+        var valuesFound = 0
+        file.accept(object : UastVisitor {
+            override fun visitElement(node: UElement): Boolean {
+                for (comment in node.comments) {
+                    val text = comment.text.removePrefix("/* ").removeSuffix(" */")
+                    val parts = text.split(" = ")
+                    if (parts.size != 2) continue
+                    when (parts[0]) {
+                        "constant" -> {
+                            val expectedValue = parts[1]
+                            val actualValue =
+                                (node as? UExpression)?.uValueOf()?.toConstant()?.toString()
+                                        ?: "cannot evaluate $node of ${node.javaClass}"
+                            assertEquals(expectedValue, actualValue)
+                            valuesFound++
+                        }
+                    }
+                }
+                return false
+            }
+        })
+        assertTrue("No values found, add some /* constant = ... */ to the input file", valuesFound > 0)
+    }
+}

plugins/uast-kotlin/tests/KotlinExpressionValueTest.kt

@@ -0,0 +1,13 @@
+/*
+ * Copyright 2010-2018 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
+ * that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.uast.test.kotlin
+
+import org.junit.Test
+
+class KotlinExpressionValueTest : AbstractKotlinExpressionValueTest() {
+    @Test
+    fun testDelegate() = doTest("Delegate")
+}

plugins/uast-kotlin/tests/KotlinUastValuesTest.kt

@@ -4,11 +4,18 @@ import org.junit.Test
 
 class KotlinUastValuesTest : AbstractKotlinValuesTest() {
 
-    @Test fun testAssertion() = doTest("Assertion")
+    @Test
+    fun testAssertion() = doTest("Assertion")
 
-    @Test fun testIn() = doTest("In")
+    @Test
+    fun testDelegate() = doTest("Delegate")
 
-    @Test fun testLocalDeclarations() = doTest("LocalDeclarations")
+    @Test
+    fun testIn() = doTest("In")
 
-    @Test fun testSimple() = doTest("Simple")
+    @Test
+    fun testLocalDeclarations() = doTest("LocalDeclarations")
+
+    @Test
+    fun testSimple() = doTest("Simple")
 }