AddToCollectionTransformation checks that the result collection type cannot be changed

idea/testData/intentions/loopToCallChain/assignFilter2.kt

@@ -0,0 +1,17 @@
+// WITH_RUNTIME
+import java.util.ArrayList
+
+fun foo(list: List<String>, p: Int): List<String> {
+    return if (p > 0) {
+        val result = ArrayList<String>()
+        <caret>for (s in list) {
+            if (s.length > 0) {
+                result.add(s)
+            }
+        }
+        result
+    }
+    else {
+        emptyList()
+    }
+}

idea/testData/intentions/loopToCallChain/assignFilter2.kt.after

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+import java.util.ArrayList
+
+fun foo(list: List<String>, p: Int): List<String> {
+    return if (p > 0) {
+        <caret>val result = list.filter { it.length > 0 }
+        result
+    }
+    else {
+        emptyList()
+    }
+}

idea/testData/intentions/loopToCallChain/assignFilter_ArrayListRequired.kt

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+import java.util.ArrayList
+
+fun foo(list: List<String>): ArrayList<String> {
+    val result = ArrayList<String>()
+    <caret>for (s in list) {
+        if (s.length > 0) {
+            result.add(s)
+        }
+    }
+    return result
+}

idea/testData/intentions/loopToCallChain/assignFilter_ArrayListRequired.kt.after

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+import java.util.ArrayList
+
+fun foo(list: List<String>): ArrayList<String> {
+    val result = ArrayList<String>()
+    <caret>list.filterTo(result) { it.length > 0 }
+    return result
+}

idea/testData/intentions/loopToCallChain/assignFilter_ArrayListRequired2.kt

@@ -0,0 +1,17 @@
+// WITH_RUNTIME
+import java.util.ArrayList
+
+fun foo(list: List<String>, p: Int): ArrayList<String> {
+    return if (p > 0) {
+        val result = ArrayList<String>()
+        <caret>for (s in list) {
+            if (s.length > 0) {
+                result.add(s)
+            }
+        }
+        result
+    }
+    else {
+        ArrayList()
+    }
+}

idea/testData/intentions/loopToCallChain/assignFilter_ArrayListRequired2.kt.after

@@ -0,0 +1,13 @@
+// WITH_RUNTIME
+import java.util.ArrayList
+
+fun foo(list: List<String>, p: Int): ArrayList<String> {
+    return if (p > 0) {
+        val result = ArrayList<String>()
+        <caret>list.filterTo(result) { it.length > 0 }
+        result
+    }
+    else {
+        ArrayList()
+    }
+}

idea/testData/intentions/loopToCallChain/assignFilter_ArrayListRequired3.kt

@@ -0,0 +1,14 @@
+// WITH_RUNTIME
+import java.util.*
+
+fun foo(list: List<String>): ArrayList<String> {
+    return run {
+        val result = ArrayList<String>()
+        <caret>for (s in list) {
+            if (s.length > 0) {
+                result.add(s)
+            }
+        }
+        result
+    }
+}

idea/testData/intentions/loopToCallChain/assignFilter_ArrayListRequired3.kt.after

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+import java.util.*
+
+fun foo(list: List<String>): ArrayList<String> {
+    return run {
+        val result = ArrayList<String>()
+        <caret>list.filterTo(result) { it.length > 0 }
+        result
+    }
+}

idea/testData/intentions/loopToCallChain/assignFilter_MutableListRequired.kt

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+import java.util.ArrayList
+
+fun foo(list: List<String>): MutableList<String> {
+    val result = ArrayList<String>()
+    <caret>for (s in list) {
+        if (s.length > 0) {
+            result.add(s)
+        }
+    }
+    return result
+}

idea/testData/intentions/loopToCallChain/assignFilter_MutableListRequired.kt.after

@@ -0,0 +1,9 @@
+// WITH_RUNTIME
+import java.util.ArrayList
+
+fun foo(list: List<String>): MutableList<String> {
+    <caret>val result = list
+            .filter { it.length > 0 }
+            .toMutableList()
+    return result
+}

idea/testData/intentions/loopToCallChain/toMutableSet.kt

@@ -0,0 +1,10 @@
+// WITH_RUNTIME
+import java.util.HashSet
+
+fun foo(map: Map<Int, String>): MutableCollection<String> {
+    val result = HashSet<String>()
+    <caret>for (s in map.values) {
+        result.add(s)
+    }
+    return result
+}

idea/testData/intentions/loopToCallChain/toMutableSet.kt.after

@@ -0,0 +1,7 @@
+// WITH_RUNTIME
+import java.util.HashSet
+
+fun foo(map: Map<Int, String>): MutableCollection<String> {
+    <caret>val result = map.values.toMutableSet()
+    return result
+}