Checking that smart casts will not be broken by conversion

idea/testData/intentions/loopToCallChain/smartCastNotBroken.kt

@@ -0,0 +1,14 @@
+// WITH_RUNTIME
+fun foo(list: List<String>, o: Any): Int? {
+    if (o is Int) {
+        <caret>for (s in list) {
+            val length = s.length + o
+            if (length > 0) {
+                val x = length * o.hashCode()
+                return x
+            }
+        }
+        return null
+    }
+    return 0
+}

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

@@ -0,0 +1,11 @@
+// WITH_RUNTIME
+fun foo(list: List<String>, o: Any): Int? {
+    if (o is Int) {
+        return list
+                .map { it.length + o }
+                .filter { it > 0 }
+                .map { it * o.hashCode() }
+                .firstOrNull()
+    }
+    return 0
+}

idea/testData/intentions/loopToCallChain/smartCastNotNullRequired.kt

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+// IS_APPLICABLE: false
+fun foo(list: List<String>, o: Int?): Int? {
+    <caret>for (s in list) {
+        val length = s.length + o!!
+        if (length > 0) {
+            val x = length * o
+            return x
+        }
+    }
+    return null
+}

idea/testData/intentions/loopToCallChain/smartCastNotRequired.kt

@@ -0,0 +1,11 @@
+// WITH_RUNTIME
+fun foo(list: List<String>, o: Any): Int? {
+    <caret>for (s in list) {
+        val length = s.length + (o as Int)
+        if (length > 0) {
+            val x = length * o.hashCode()
+            return x
+        }
+    }
+    return null
+}

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

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+fun foo(list: List<String>, o: Any): Int? {
+    <caret>return list
+            .map { it.length + (o as Int) }
+            .filter { it > 0 }
+            .map { it * o.hashCode() }
+            .firstOrNull()
+}

idea/testData/intentions/loopToCallChain/smartCastRequired.kt

@@ -0,0 +1,12 @@
+// WITH_RUNTIME
+// IS_APPLICABLE: false
+fun foo(list: List<String>, o: Any): Int? {
+    <caret>for (s in list) {
+        val length = s.length + (o as Int)
+        if (length > 0) {
+            val x = length * o
+            return x
+        }
+    }
+    return null
+}

idea/testData/intentions/loopToCallChain/smartCastRequired2.kt

@@ -0,0 +1,11 @@
+// WITH_RUNTIME
+// IS_APPLICABLE: false
+fun foo(list: List<Any>, o: Any): Int? {
+    <caret>for (s in list) {
+        if (s is String && s.length > 0) {
+            val x = s.length * 2
+            return x
+        }
+    }
+    return null
+}

idea/testData/intentions/loopToCallChain/smartCastThisRequired.kt

@@ -0,0 +1,11 @@
+// WITH_RUNTIME
+// IS_APPLICABLE: false
+fun Any.foo(list: List<String>): Int? {
+    <caret>for (s in list) {
+        if (s.length > 0 && this is String) {
+            val result = s.length + length
+            return result
+        }
+    }
+    return null
+}