"Change type" quick fix: fix false negative in 'when' branch #KT-8820 Fixed

idea/testData/quickfix/typeMismatch/when.kt

@@ -0,0 +1,7 @@
+// "Change return type of enclosing function 'test' to 'String'" "true"
+fun test(i: Int) {
+    return when (i) {
+        0 -> ""<caret>
+        else -> ""
+    }
+}

idea/testData/quickfix/typeMismatch/when.kt.after

@@ -0,0 +1,7 @@
+// "Change return type of enclosing function 'test' to 'String'" "true"
+fun test(i: Int): String {
+    return when (i) {
+        0 -> ""<caret>
+        else -> ""
+    }
+}

idea/testData/quickfix/typeMismatch/when2.kt

@@ -0,0 +1,11 @@
+// "Change return type of enclosing function 'test' to 'String'" "true"
+fun test(i: Int) {
+    return when (i) {
+        0 -> {
+            ""
+        }
+        else -> {
+            ""<caret>
+        }
+    }
+}

idea/testData/quickfix/typeMismatch/when2.kt.after

@@ -0,0 +1,11 @@
+// "Change return type of enclosing function 'test' to 'String'" "true"
+fun test(i: Int): String {
+    return when (i) {
+        0 -> {
+            ""
+        }
+        else -> {
+            ""<caret>
+        }
+    }
+}

idea/testData/quickfix/typeMismatch/when3.kt

@@ -0,0 +1,7 @@
+// "Change type of 's' to 'String'" "true"
+fun test(i: Int) {
+    val s: Int = when (i) {
+        0 -> ""<caret>
+        else -> ""
+    }
+}

idea/testData/quickfix/typeMismatch/when3.kt.after

@@ -0,0 +1,7 @@
+// "Change type of 's' to 'String'" "true"
+fun test(i: Int) {
+    val s: String = when (i) {
+        0 -> ""<caret>
+        else -> ""
+    }
+}