KT-1478 Quick fix for using nullable collection in "for in" expression

#KT-1478 Fixed

idea/testData/quickfix/expressions/fixNullableIterableGenericWithExclExcl.kt

@@ -0,0 +1,4 @@
+// "Add non-null asserted (!!) call" "true"
+fun <T: Collection<Int>?> foo(c: T) {
+    for (i in <caret>c) { }
+}

idea/testData/quickfix/expressions/fixNullableIterableGenericWithExclExcl.kt.after

@@ -0,0 +1,4 @@
+// "Add non-null asserted (!!) call" "true"
+fun <T: Collection<Int>?> foo(c: T) {
+    for (i in c!!) { }
+}

idea/testData/quickfix/expressions/fixNullableIterableWithExclExcl.kt

@@ -0,0 +1,5 @@
+// "Add non-null asserted (!!) call" "true"
+fun foo() {
+    val test : Collection<Int>? = null!!
+    for (i in <caret>test) { }
+}

idea/testData/quickfix/expressions/fixNullableIterableWithExclExcl.kt.after

@@ -0,0 +1,5 @@
+// "Add non-null asserted (!!) call" "true"
+fun foo() {
+    val test : Collection<Int>? = null!!
+    for (i in <caret>test!!) { }
+}

idea/testData/quickfix/expressions/fixNullableWithExclExclAbsentWithBadIterator.kt

@@ -0,0 +1,12 @@
+// "Add non-null asserted (!!) call" "false"
+// ACTION: Replace with a 'forEach' function call
+// ERROR: For-loop range must have an iterator() method
+
+class Some {
+    fun iterator(): Iterator<Int> = null!!
+}
+
+fun foo() {
+    val test: Some? = Some()
+    for (i in <caret>test) { }
+}

idea/testData/quickfix/expressions/fixNullableWithIteratorWithExclExcl.kt

@@ -0,0 +1,9 @@
+// "Add non-null asserted (!!) call" "true"
+class Some {
+    operator fun iterator(): Iterator<Int> = null!!
+}
+
+fun foo() {
+    val test: Some? = Some()
+    for (i in <caret>test) { }
+}

idea/testData/quickfix/expressions/fixNullableWithIteratorWithExclExcl.kt.after

@@ -0,0 +1,9 @@
+// "Add non-null asserted (!!) call" "true"
+class Some {
+    operator fun iterator(): Iterator<Int> = null!!
+}
+
+fun foo() {
+    val test: Some? = Some()
+    for (i in test!!) { }
+}