Replace fold/unfold intentions with a set of specialized ones

idea/testData/codeInsight/codeTransformations/branched/folding/whenToAssignment/innerWhenTransformed.kt

@@ -0,0 +1,21 @@
+fun test(n: Int): String {
+    var res: String
+
+    if (3 > 2) {
+        <caret>when(n) {
+            1 -> {
+                println("***")
+                res = "one"
+            }
+            else -> {
+                println("***")
+                res = "two"
+            }
+        }
+    } else {
+        println("***")
+        res = "???"
+    }
+
+    return res
+}

idea/testData/codeInsight/codeTransformations/branched/folding/whenToAssignment/innerWhenTransformed.kt.after

@@ -0,0 +1,21 @@
+fun test(n: Int): String {
+    var res: String
+
+    if (3 > 2) {
+        <caret>res = when(n) {
+            1 -> {
+                println("***")
+                "one"
+            }
+            else -> {
+                println("***")
+                "two"
+            }
+        }
+    } else {
+        println("***")
+        res = "???"
+    }
+
+    return res
+}

idea/testData/codeInsight/codeTransformations/branched/folding/whenToAssignment/simpleWhen.kt

@@ -0,0 +1,10 @@
+fun test(n: Int): String {
+    var res: String
+
+    <caret>when(n) {
+        1 -> res = "one"
+        else -> res = "two"
+    }
+
+    return res
+}

idea/testData/codeInsight/codeTransformations/branched/folding/whenToAssignment/simpleWhen.kt.after

@@ -0,0 +1,10 @@
+fun test(n: Int): String {
+    var res: String
+
+    <caret>res = when(n) {
+        1 -> "one"
+        else -> "two"
+    }
+
+    return res
+}

idea/testData/codeInsight/codeTransformations/branched/folding/whenToAssignment/simpleWhenWithBlocks.kt

@@ -0,0 +1,16 @@
+fun test(n: Int): String {
+    var res: String
+
+    <caret>when (n) {
+        1 -> {
+            println("***")
+            res = "one"
+        }
+        else -> {
+            println("***")
+            res = "two"
+        }
+    }
+
+    return res
+}

idea/testData/codeInsight/codeTransformations/branched/folding/whenToAssignment/simpleWhenWithBlocks.kt.after

@@ -0,0 +1,16 @@
+fun test(n: Int): String {
+    var res: String
+
+    <caret>res = when (n) {
+        1 -> {
+            println("***")
+            "one"
+        }
+        else -> {
+            println("***")
+            "two"
+        }
+    }
+
+    return res
+}

idea/testData/codeInsight/codeTransformations/branched/folding/whenToAssignment/simpleWhenWithShadowedVar.kt

@@ -0,0 +1,19 @@
+// IS_APPLICABLE: false
+fun test(n: Int): String {
+    var res: String = ""
+
+    <caret>when (n) {
+        1 -> {
+            println("***")
+            res = "one"
+        }
+        else -> {
+            var res: String
+
+            res = "two"
+            println("***")
+        }
+    }
+
+    return res
+}

idea/testData/codeInsight/codeTransformations/branched/folding/whenToAssignment/simpleWhenWithUnmatchedAssignments.kt

@@ -0,0 +1,18 @@
+// IS_APPLICABLE: false
+fun test(n: Int): String {
+    var res: String = ""
+    var res2: String = ""
+
+    <caret>when (n) {
+        1 -> {
+            println("***")
+            res = "one"
+        }
+        else -> {
+            println("***")
+            res2 = "two"
+        }
+    }
+
+    return res + res2
+}

idea/testData/codeInsight/codeTransformations/branched/folding/whenToAssignment/simpleWhenWithoutTerminatingAssignment.kt

@@ -0,0 +1,17 @@
+// IS_APPLICABLE: false
+fun test(n: Int): String {
+    var res: String
+
+    <caret>when (n) {
+            1 -> {
+                println("***")
+                res = "one"
+            }
+            else -> {
+                res = "two"
+                println("***")
+            }
+    }
+
+    return res
+}