diff --git a/idea/testData/refactoring/introduceVariable/ArrayAccessExpr.kt b/idea/testData/refactoring/introduceVariable/ArrayAccessExpr.kt
index 52b4a8ef50e..fbf1aaa74c4 100644
--- a/idea/testData/refactoring/introduceVariable/ArrayAccessExpr.kt
+++ b/idea/testData/refactoring/introduceVariable/ArrayAccessExpr.kt
@@ -1,9 +1,3 @@
 fun f(list: List<String>) {
     val value = list[<selection>1 + 2</selection>]
-}
-/*
-fun f(list: List<String>) {
-    val i = 1 + 2
-    val value = list[i]
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/ArrayAccessExpr.kt.after b/idea/testData/refactoring/introduceVariable/ArrayAccessExpr.kt.after
new file mode 100644
index 00000000000..c6c6d3f2cd4
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/ArrayAccessExpr.kt.after
@@ -0,0 +1,4 @@
+fun f(list: List<String>) {
+    val i = 1 + 2
+    val value = list[i]
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/ClassBody.kt b/idea/testData/refactoring/introduceVariable/ClassBody.kt
index a5bd81ba677..a71fafec3f1 100644
--- a/idea/testData/refactoring/introduceVariable/ClassBody.kt
+++ b/idea/testData/refactoring/introduceVariable/ClassBody.kt
@@ -1,9 +1,3 @@
 open class A {
     val x = <selection>1</selection>
-}
-/*
-open class A {
-    val i = 1
-    val x = i
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/ClassBody.kt.after b/idea/testData/refactoring/introduceVariable/ClassBody.kt.after
new file mode 100644
index 00000000000..937980e268c
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/ClassBody.kt.after
@@ -0,0 +1,4 @@
+open class A {
+    val i = 1
+    val x = i
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/DoWhileAddBlock.kt b/idea/testData/refactoring/introduceVariable/DoWhileAddBlock.kt
index 494ee246db9..68e12813d35 100644
--- a/idea/testData/refactoring/introduceVariable/DoWhileAddBlock.kt
+++ b/idea/testData/refactoring/introduceVariable/DoWhileAddBlock.kt
@@ -2,13 +2,4 @@ open class A() {
     {
         do <selection>1</selection> while (true)
     }
-}
-/*
-open class A() {
-    {
-        do {
-            val i = 1
-        } while (true)
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/DoWhileAddBlock.kt.after b/idea/testData/refactoring/introduceVariable/DoWhileAddBlock.kt.after
new file mode 100644
index 00000000000..8bd97cf4fb8
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/DoWhileAddBlock.kt.after
@@ -0,0 +1,7 @@
+open class A() {
+    {
+        do {
+            val i = 1
+        } while (true)
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/DoWhileAddBlockInner.kt b/idea/testData/refactoring/introduceVariable/DoWhileAddBlockInner.kt
index ec34a0f00fb..fa320c5399d 100644
--- a/idea/testData/refactoring/introduceVariable/DoWhileAddBlockInner.kt
+++ b/idea/testData/refactoring/introduceVariable/DoWhileAddBlockInner.kt
@@ -2,14 +2,4 @@ open class A() {
     {
         do println(<selection>1</selection>) while (true)
     }
-}
-/*
-open class A() {
-    {
-        do {
-            val i = 1
-            println(i)
-        } while (true)
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/DoWhileAddBlockInner.kt.after b/idea/testData/refactoring/introduceVariable/DoWhileAddBlockInner.kt.after
new file mode 100644
index 00000000000..583da6902a8
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/DoWhileAddBlockInner.kt.after
@@ -0,0 +1,8 @@
+open class A() {
+    {
+        do {
+            val i = 1
+            println(i)
+        } while (true)
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FewOccurrences.kt b/idea/testData/refactoring/introduceVariable/FewOccurrences.kt
index 0c4c14f3ffc..185be4fa997 100644
--- a/idea/testData/refactoring/introduceVariable/FewOccurrences.kt
+++ b/idea/testData/refactoring/introduceVariable/FewOccurrences.kt
@@ -2,12 +2,4 @@ fun a() {
     1
     1
     if (true) <selection>1</selection>
-}
-/*
-fun a() {
-    val i = 1
-    i
-    i
-    if (true) i
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FewOccurrences.kt.after b/idea/testData/refactoring/introduceVariable/FewOccurrences.kt.after
new file mode 100644
index 00000000000..b249efa00cd
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/FewOccurrences.kt.after
@@ -0,0 +1,6 @@
+fun a() {
+    val i = 1
+    i
+    i
+    if (true) i
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FunctionAddBlock.kt b/idea/testData/refactoring/introduceVariable/FunctionAddBlock.kt
index 8403106987d..fb33754b117 100644
--- a/idea/testData/refactoring/introduceVariable/FunctionAddBlock.kt
+++ b/idea/testData/refactoring/introduceVariable/FunctionAddBlock.kt
@@ -1,6 +1 @@
-fun x(): Int = <selection>1</selection>
-/*
-fun x(): Int {
-    val i = 1
-}
-*/
\ No newline at end of file
+fun x(): Int = <selection>1</selection>
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FunctionAddBlock.kt.after b/idea/testData/refactoring/introduceVariable/FunctionAddBlock.kt.after
new file mode 100644
index 00000000000..31ca620fef4
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/FunctionAddBlock.kt.after
@@ -0,0 +1,3 @@
+fun x(): Int {
+    val i = 1
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FunctionAddBlockInner.kt b/idea/testData/refactoring/introduceVariable/FunctionAddBlockInner.kt
index c1ad9303d00..3462b44ccf5 100644
--- a/idea/testData/refactoring/introduceVariable/FunctionAddBlockInner.kt
+++ b/idea/testData/refactoring/introduceVariable/FunctionAddBlockInner.kt
@@ -1,7 +1 @@
-fun x(): Int = println(<selection>1</selection>)
-/*
-fun x(): Int {
-    val i = 1
-    println(i)
-}
-*/
\ No newline at end of file
+fun x(): Int = println(<selection>1</selection>)
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FunctionAddBlockInner.kt.after b/idea/testData/refactoring/introduceVariable/FunctionAddBlockInner.kt.after
new file mode 100644
index 00000000000..9ab41811fd3
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/FunctionAddBlockInner.kt.after
@@ -0,0 +1,4 @@
+fun x(): Int {
+    val i = 1
+    println(i)
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FunctionLiteral.kt b/idea/testData/refactoring/introduceVariable/FunctionLiteral.kt
index 60443bf7198..651cf248267 100644
--- a/idea/testData/refactoring/introduceVariable/FunctionLiteral.kt
+++ b/idea/testData/refactoring/introduceVariable/FunctionLiteral.kt
@@ -1,9 +1,3 @@
 fun foo(c : Collection<String>){
   c.filter<selection>{it; false}</selection>
-}
-/*
-fun foo(c : Collection<String>){
-    val function = { it; false }
-    c.filter(function)
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FunctionLiteral.kt.after b/idea/testData/refactoring/introduceVariable/FunctionLiteral.kt.after
new file mode 100644
index 00000000000..05f4b0cac1c
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/FunctionLiteral.kt.after
@@ -0,0 +1,4 @@
+fun foo(c : Collection<String>){
+    val function = { it; false }
+    c.filter(function)
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FunctionLiteralFromExpected.kt b/idea/testData/refactoring/introduceVariable/FunctionLiteralFromExpected.kt
index 0ef532a7182..08b0e4c44cf 100644
--- a/idea/testData/refactoring/introduceVariable/FunctionLiteralFromExpected.kt
+++ b/idea/testData/refactoring/introduceVariable/FunctionLiteralFromExpected.kt
@@ -4,14 +4,4 @@ class A {
 fun apply(x: (A) -> Int) = 2
 fun test() {
   apply<selection>{it.foo()}</selection>
-}
-/*
-class A {
-  fun foo() = 1
-}
-fun apply(x: (A) -> Int) = 2
-fun test() {
-    val function: (A) -> Int = { it.foo() }
-    apply(function)
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/FunctionLiteralFromExpected.kt.after b/idea/testData/refactoring/introduceVariable/FunctionLiteralFromExpected.kt.after
new file mode 100644
index 00000000000..e3a8b9f69b8
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/FunctionLiteralFromExpected.kt.after
@@ -0,0 +1,8 @@
+class A {
+  fun foo() = 1
+}
+fun apply(x: (A) -> Int) = 2
+fun test() {
+    val function: (A) -> Int = { it.foo() }
+    apply(function)
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfCondition.kt b/idea/testData/refactoring/introduceVariable/IfCondition.kt
index f9eeed5f999..168342bb98e 100644
--- a/idea/testData/refactoring/introduceVariable/IfCondition.kt
+++ b/idea/testData/refactoring/introduceVariable/IfCondition.kt
@@ -1,11 +1,4 @@
 fun a() {
     if (<selection>true</selection>) 2
     else 1
-}
-/*
-fun a() {
-    val b = true
-    if (b) 2
-    else 1
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfCondition.kt.after b/idea/testData/refactoring/introduceVariable/IfCondition.kt.after
new file mode 100644
index 00000000000..64eeb858658
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/IfCondition.kt.after
@@ -0,0 +1,5 @@
+fun a() {
+    val b = true
+    if (b) 2
+    else 1
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfElseAddBlock.kt b/idea/testData/refactoring/introduceVariable/IfElseAddBlock.kt
index 1c390070055..e5f6a8c5e24 100644
--- a/idea/testData/refactoring/introduceVariable/IfElseAddBlock.kt
+++ b/idea/testData/refactoring/introduceVariable/IfElseAddBlock.kt
@@ -1,12 +1,4 @@
 fun a() {
     if (true) 2
     else <selection>1</selection>
-}
-/*
-fun a() {
-    if (true) 2
-    else {
-        val i = 1
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfElseAddBlock.kt.after b/idea/testData/refactoring/introduceVariable/IfElseAddBlock.kt.after
new file mode 100644
index 00000000000..b793150b15e
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/IfElseAddBlock.kt.after
@@ -0,0 +1,6 @@
+fun a() {
+    if (true) 2
+    else {
+        val i = 1
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfElseAddBlockInner.kt b/idea/testData/refactoring/introduceVariable/IfElseAddBlockInner.kt
index 674eedd3031..1ea662ed22b 100644
--- a/idea/testData/refactoring/introduceVariable/IfElseAddBlockInner.kt
+++ b/idea/testData/refactoring/introduceVariable/IfElseAddBlockInner.kt
@@ -1,13 +1,4 @@
 fun a() {
     if (true) 2
     else println(<selection>1</selection>)
-}
-/*
-fun a() {
-    if (true) 2
-    else {
-        val i = 1
-        println(i)
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfElseAddBlockInner.kt.after b/idea/testData/refactoring/introduceVariable/IfElseAddBlockInner.kt.after
new file mode 100644
index 00000000000..bda286d8668
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/IfElseAddBlockInner.kt.after
@@ -0,0 +1,7 @@
+fun a() {
+    if (true) 2
+    else {
+        val i = 1
+        println(i)
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfThenAddBlock.kt b/idea/testData/refactoring/introduceVariable/IfThenAddBlock.kt
index 61e5cece18f..e04e2a466bc 100644
--- a/idea/testData/refactoring/introduceVariable/IfThenAddBlock.kt
+++ b/idea/testData/refactoring/introduceVariable/IfThenAddBlock.kt
@@ -1,11 +1,4 @@
 fun a() {
     if (true) <selection>1</selection>
     else 2
-}
-/*
-fun a() {
-    if (true) {
-        val i = 1
-    } else 2
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfThenAddBlock.kt.after b/idea/testData/refactoring/introduceVariable/IfThenAddBlock.kt.after
new file mode 100644
index 00000000000..5c6aad22e3b
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/IfThenAddBlock.kt.after
@@ -0,0 +1,5 @@
+fun a() {
+    if (true) {
+        val i = 1
+    } else 2
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfThenAddBlockInner.kt b/idea/testData/refactoring/introduceVariable/IfThenAddBlockInner.kt
index a2d001ac260..be2f37e6a6d 100644
--- a/idea/testData/refactoring/introduceVariable/IfThenAddBlockInner.kt
+++ b/idea/testData/refactoring/introduceVariable/IfThenAddBlockInner.kt
@@ -1,12 +1,4 @@
 fun a() {
     if (true) println(<selection>1</selection>)
     else 2
-}
-/*
-fun a() {
-    if (true) {
-        val i = 1
-        println(i)
-    } else 2
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/IfThenAddBlockInner.kt.after b/idea/testData/refactoring/introduceVariable/IfThenAddBlockInner.kt.after
new file mode 100644
index 00000000000..5e69e0bcb9c
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/IfThenAddBlockInner.kt.after
@@ -0,0 +1,6 @@
+fun a() {
+    if (true) {
+        val i = 1
+        println(i)
+    } else 2
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/It.kt b/idea/testData/refactoring/introduceVariable/It.kt
index be8c115c77c..58655fdf12a 100644
--- a/idea/testData/refactoring/introduceVariable/It.kt
+++ b/idea/testData/refactoring/introduceVariable/It.kt
@@ -4,13 +4,4 @@ fun b() {
     a {
         <selection>it</selection>
     }
-}
-/*
-fun a(op: (Int) -> Int) {}
-fun b() {
-    a {it}
-    a {
-        val i = it
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/It.kt.after b/idea/testData/refactoring/introduceVariable/It.kt.after
new file mode 100644
index 00000000000..57e869d9c78
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/It.kt.after
@@ -0,0 +1,7 @@
+fun a(op: (Int) -> Int) {}
+fun b() {
+    a {it}
+    a {
+        val i = it
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/LoopRange.kt b/idea/testData/refactoring/introduceVariable/LoopRange.kt
index ceee33b1156..741753b024c 100644
--- a/idea/testData/refactoring/introduceVariable/LoopRange.kt
+++ b/idea/testData/refactoring/introduceVariable/LoopRange.kt
@@ -1,9 +1,3 @@
 fun a() {
     for (a in <selection>1..2</selection>) {}
-}
-/*
-fun a() {
-    val intRange = 1..2
-    for (a in intRange) {}
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/LoopRange.kt.after b/idea/testData/refactoring/introduceVariable/LoopRange.kt.after
new file mode 100644
index 00000000000..7ec88d554ff
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/LoopRange.kt.after
@@ -0,0 +1,4 @@
+fun a() {
+    val intRange = 1..2
+    for (a in intRange) {}
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/ManyInnerOccurences.kt b/idea/testData/refactoring/introduceVariable/ManyInnerOccurences.kt
index e89d8a9ea8b..b7050f49943 100644
--- a/idea/testData/refactoring/introduceVariable/ManyInnerOccurences.kt
+++ b/idea/testData/refactoring/introduceVariable/ManyInnerOccurences.kt
@@ -8,18 +8,4 @@ fun a() {
             <selection>1</selection>
         }
     }
-}
-/*
-fun a() {
-    val i = 1
-    if (true) {
-        if (true) {
-            i
-        }
-    } else {
-        if (true) {
-            i
-        }
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/ManyInnerOccurences.kt.after b/idea/testData/refactoring/introduceVariable/ManyInnerOccurences.kt.after
new file mode 100644
index 00000000000..388d5829534
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/ManyInnerOccurences.kt.after
@@ -0,0 +1,12 @@
+fun a() {
+    val i = 1
+    if (true) {
+        if (true) {
+            i
+        }
+    } else {
+        if (true) {
+            i
+        }
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/ManyOccurrences.kt b/idea/testData/refactoring/introduceVariable/ManyOccurrences.kt
index 91849808a39..93b778c0703 100644
--- a/idea/testData/refactoring/introduceVariable/ManyOccurrences.kt
+++ b/idea/testData/refactoring/introduceVariable/ManyOccurrences.kt
@@ -12,22 +12,4 @@ fun a() {
             1
         }
     }
-}
-/*
-fun a() {
-    val i = 1
-    if (true) {
-        i
-    }
-    if (true) {
-        i
-    }
-    if (true) {
-        i
-    } else {
-        if (true) {
-            i
-        }
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/ManyOccurrences.kt.after b/idea/testData/refactoring/introduceVariable/ManyOccurrences.kt.after
new file mode 100644
index 00000000000..341b9b7fb3e
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/ManyOccurrences.kt.after
@@ -0,0 +1,16 @@
+fun a() {
+    val i = 1
+    if (true) {
+        i
+    }
+    if (true) {
+        i
+    }
+    if (true) {
+        i
+    } else {
+        if (true) {
+            i
+        }
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/ReplaceOccurence.kt b/idea/testData/refactoring/introduceVariable/ReplaceOccurence.kt
index 94f09bb3557..5134acf73d8 100644
--- a/idea/testData/refactoring/introduceVariable/ReplaceOccurence.kt
+++ b/idea/testData/refactoring/introduceVariable/ReplaceOccurence.kt
@@ -1,11 +1,4 @@
 fun a(x: Int) {}
 fun b() {
     a(<selection>1</selection>)
-}
-/*
-fun a(x: Int) {}
-fun b() {
-    val i = 1
-    a(i)
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/ReplaceOccurence.kt.after b/idea/testData/refactoring/introduceVariable/ReplaceOccurence.kt.after
new file mode 100644
index 00000000000..18fffc66edf
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/ReplaceOccurence.kt.after
@@ -0,0 +1,5 @@
+fun a(x: Int) {}
+fun b() {
+    val i = 1
+    a(i)
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/Simple.kt b/idea/testData/refactoring/introduceVariable/Simple.kt
index 23c4d75fe91..25dc89c7cd8 100644
--- a/idea/testData/refactoring/introduceVariable/Simple.kt
+++ b/idea/testData/refactoring/introduceVariable/Simple.kt
@@ -1,8 +1,3 @@
 fun a() {
     <selection>1</selection>
-}
-/*
-fun a() {
-    val i = 1
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/Simple.kt.after b/idea/testData/refactoring/introduceVariable/Simple.kt.after
new file mode 100644
index 00000000000..777a2bb26c9
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/Simple.kt.after
@@ -0,0 +1,3 @@
+fun a() {
+    val i = 1
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/SimpleCreateValue.kt b/idea/testData/refactoring/introduceVariable/SimpleCreateValue.kt
index 23c4d75fe91..25dc89c7cd8 100644
--- a/idea/testData/refactoring/introduceVariable/SimpleCreateValue.kt
+++ b/idea/testData/refactoring/introduceVariable/SimpleCreateValue.kt
@@ -1,8 +1,3 @@
 fun a() {
     <selection>1</selection>
-}
-/*
-fun a() {
-    val i = 1
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/SimpleCreateValue.kt.after b/idea/testData/refactoring/introduceVariable/SimpleCreateValue.kt.after
new file mode 100644
index 00000000000..777a2bb26c9
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/SimpleCreateValue.kt.after
@@ -0,0 +1,3 @@
+fun a() {
+    val i = 1
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/StringInjection.kt b/idea/testData/refactoring/introduceVariable/StringInjection.kt
index 581181fc9dc..20ead975aae 100644
--- a/idea/testData/refactoring/introduceVariable/StringInjection.kt
+++ b/idea/testData/refactoring/introduceVariable/StringInjection.kt
@@ -1,9 +1,3 @@
 fun a() {
     "it's a number ${<selection>1</selection>}"
-}
-/*
-fun a() {
-    val i = 1
-    "it's a number ${i}"
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/StringInjection.kt.after b/idea/testData/refactoring/introduceVariable/StringInjection.kt.after
new file mode 100644
index 00000000000..7caa4ba7bed
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/StringInjection.kt.after
@@ -0,0 +1,4 @@
+fun a() {
+    val i = 1
+    "it's a number ${i}"
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhenAddBlock.kt b/idea/testData/refactoring/introduceVariable/WhenAddBlock.kt
index d5b80609c49..4bca5fa11a0 100644
--- a/idea/testData/refactoring/introduceVariable/WhenAddBlock.kt
+++ b/idea/testData/refactoring/introduceVariable/WhenAddBlock.kt
@@ -2,13 +2,4 @@ fun a() {
     when (1) {
         is 1 -> <selection>2</selection>
     }
-}
-/*
-fun a() {
-    when (1) {
-        is 1 -> {
-            val i = 2
-        }
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhenAddBlock.kt.after b/idea/testData/refactoring/introduceVariable/WhenAddBlock.kt.after
new file mode 100644
index 00000000000..252e7aba070
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/WhenAddBlock.kt.after
@@ -0,0 +1,7 @@
+fun a() {
+    when (1) {
+        is 1 -> {
+            val i = 2
+        }
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhenAddBlockInner.kt b/idea/testData/refactoring/introduceVariable/WhenAddBlockInner.kt
index 3ae3550318b..eda70c58393 100644
--- a/idea/testData/refactoring/introduceVariable/WhenAddBlockInner.kt
+++ b/idea/testData/refactoring/introduceVariable/WhenAddBlockInner.kt
@@ -2,14 +2,4 @@ fun a() {
     when (1) {
         is 1 -> println(<selection>2</selection>)
     }
-}
-/*
-fun a() {
-    when (1) {
-        is 1 -> {
-            val i = 2
-            println(i)
-        }
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhenAddBlockInner.kt.after b/idea/testData/refactoring/introduceVariable/WhenAddBlockInner.kt.after
new file mode 100644
index 00000000000..235ec19093e
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/WhenAddBlockInner.kt.after
@@ -0,0 +1,8 @@
+fun a() {
+    when (1) {
+        is 1 -> {
+            val i = 2
+            println(i)
+        }
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhenParts.kt b/idea/testData/refactoring/introduceVariable/WhenParts.kt
index 55cbd1a1262..d9ac159674e 100644
--- a/idea/testData/refactoring/introduceVariable/WhenParts.kt
+++ b/idea/testData/refactoring/introduceVariable/WhenParts.kt
@@ -3,13 +3,4 @@ fun a() {
         is 3 -> 1
         is 4 -> <selection>1</selection>
     }
-}
-/*
-fun a() {
-    val i = 1
-    when (i) {
-        is 3 -> i
-        is 4 -> i
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhenParts.kt.after b/idea/testData/refactoring/introduceVariable/WhenParts.kt.after
new file mode 100644
index 00000000000..86f2fa82d6e
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/WhenParts.kt.after
@@ -0,0 +1,7 @@
+fun a() {
+    val i = 1
+    when (i) {
+        is 3 -> i
+        is 4 -> i
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhileAddBlock.kt b/idea/testData/refactoring/introduceVariable/WhileAddBlock.kt
index c4bab487c7e..2ea3ea2f0ce 100644
--- a/idea/testData/refactoring/introduceVariable/WhileAddBlock.kt
+++ b/idea/testData/refactoring/introduceVariable/WhileAddBlock.kt
@@ -2,13 +2,4 @@ open class A() {
     {
         while (true) <selection>1</selection>
     }
-}
-/*
-open class A() {
-    {
-        while (true) {
-            val i = 1
-        }
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhileAddBlock.kt.after b/idea/testData/refactoring/introduceVariable/WhileAddBlock.kt.after
new file mode 100644
index 00000000000..774dc3da8bc
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/WhileAddBlock.kt.after
@@ -0,0 +1,7 @@
+open class A() {
+    {
+        while (true) {
+            val i = 1
+        }
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhileAddBlockInner.kt b/idea/testData/refactoring/introduceVariable/WhileAddBlockInner.kt
index 1d46852ce01..8eb53bed8b3 100644
--- a/idea/testData/refactoring/introduceVariable/WhileAddBlockInner.kt
+++ b/idea/testData/refactoring/introduceVariable/WhileAddBlockInner.kt
@@ -2,14 +2,4 @@ open class A() {
     {
         while (true) println(<selection>1</selection>)
     }
-}
-/*
-open class A() {
-    {
-        while (true) {
-            val i = 1
-            println(i)
-        }
-    }
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhileAddBlockInner.kt.after b/idea/testData/refactoring/introduceVariable/WhileAddBlockInner.kt.after
new file mode 100644
index 00000000000..be5902f5420
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/WhileAddBlockInner.kt.after
@@ -0,0 +1,8 @@
+open class A() {
+    {
+        while (true) {
+            val i = 1
+            println(i)
+        }
+    }
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhileCondition.kt b/idea/testData/refactoring/introduceVariable/WhileCondition.kt
index d586b27486b..3493844de5f 100644
--- a/idea/testData/refactoring/introduceVariable/WhileCondition.kt
+++ b/idea/testData/refactoring/introduceVariable/WhileCondition.kt
@@ -1,9 +1,3 @@
 fun a() {
     while (<selection>true</selection>) {}
-}
-/*
-fun a() {
-    val b = true
-    while (b) {}
-}
-*/
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/idea/testData/refactoring/introduceVariable/WhileCondition.kt.after b/idea/testData/refactoring/introduceVariable/WhileCondition.kt.after
new file mode 100644
index 00000000000..63921251bee
--- /dev/null
+++ b/idea/testData/refactoring/introduceVariable/WhileCondition.kt.after
@@ -0,0 +1,4 @@
+fun a() {
+    val b = true
+    while (b) {}
+}
\ No newline at end of file
diff --git a/idea/tests/org/jetbrains/jet/plugin/refactoring/introduce/introduceVariable/AbstractJetExtractionTest.kt b/idea/tests/org/jetbrains/jet/plugin/refactoring/introduce/introduceVariable/AbstractJetExtractionTest.kt
index cc45ce281ee..0128bde2c5c 100644
--- a/idea/tests/org/jetbrains/jet/plugin/refactoring/introduce/introduceVariable/AbstractJetExtractionTest.kt
+++ b/idea/tests/org/jetbrains/jet/plugin/refactoring/introduce/introduceVariable/AbstractJetExtractionTest.kt
@@ -17,16 +17,14 @@
 package org.jetbrains.jet.plugin.refactoring.introduce.introduceVariable
 
 import com.intellij.ide.DataManager
-import com.intellij.psi.PsiElement
 import com.intellij.refactoring.RefactoringActionHandler
 import com.intellij.testFramework.fixtures.LightCodeInsightFixtureTestCase
 import org.jetbrains.jet.JetTestCaseBuilder
 import org.jetbrains.jet.lang.psi.JetFile
-import org.jetbrains.jet.lexer.JetTokens
 import org.jetbrains.jet.plugin.refactoring.extractFunction.ExtractKotlinFunctionHandler
 import java.io.File
-import junit.framework.TestCase
-import kotlin.test.assertEquals
+import org.jetbrains.jet.JetTestUtils
+import com.intellij.refactoring.BaseRefactoringProcessor.ConflictsInTestsException
 
 public abstract class AbstractJetExtractionTest() : LightCodeInsightFixtureTestCase() {
     protected fun doIntroduceVariableTest(path: String) {
@@ -35,33 +33,27 @@ public abstract class AbstractJetExtractionTest() : LightCodeInsightFixtureTestC
 
     protected fun doTest(path: String, handler: RefactoringActionHandler) {
         val mainFile = File(path)
+        val afterFile = File("$path.after")
+        val conflictFile = File("$path.conflicts")
 
         myFixture.setTestDataPath("${JetTestCaseBuilder.getHomeDirectory()}/${mainFile.getParent()}")
 
         val file = myFixture.configureByFile(mainFile.getName()) as JetFile
 
-        val lastChild = file.getLastChild()
-        assert(lastChild != null)
+        try {
+            handler.invoke(
+                    getProject(),
+                    myFixture.getEditor(),
+                    file,
+                    DataManager.getInstance().getDataContext(myFixture.getEditor().getComponent())
+            )
 
-        val expectedResultText = 
-                when (lastChild!!.getNode()!!.getElementType()) {
-                    JetTokens.BLOCK_COMMENT -> {
-                        val lastChildText = lastChild.getText()
-                        lastChildText!!.substring(2, lastChildText.length() - 2).trim()
-                    }
-                    
-                    JetTokens.EOL_COMMENT -> {
-                        lastChild.getText()!!.substring(2).trim()
-                    }
-                    
-                    else -> null
-                }
-        assert(expectedResultText != null)
-
-        handler.invoke(
-                getProject(), myFixture.getEditor(), file, DataManager.getInstance().getDataContext(myFixture.getEditor().getComponent()))
-
-        val endOffset = file.getLastChild()!!.getTextRange()!!.getStartOffset()
-        assertEquals(expectedResultText, file.getText()!!.substring(0, endOffset).trim())
+            assert(!conflictFile.exists())
+            JetTestUtils.assertEqualsToFile(afterFile, file.getText()!!)
+        }
+        catch(e: Exception) {
+            val message = if (e is ConflictsInTestsException) e.getMessages().sort().makeString(" ") else e.getMessage()
+            JetTestUtils.assertEqualsToFile(conflictFile, message?.replace("\n", " ") ?: e.javaClass.getName())
+        }
     }
 }