Added tests for 'open' modifier checks

idea/testData/quickfix/modifiers/afterFinalTrait.kt

@@ -0,0 +1,2 @@
+// "Remove 'final' modifier" "true"
+<caret>trait A {}

idea/testData/quickfix/modifiers/afterNonFinalAccessorOfFinalProperty1.kt

@@ -0,0 +1,5 @@
+// "Make 'i' open" "true"
+open class A() {
+    open val i: Int = 1
+    <caret>open get(): Int = $i
+}

idea/testData/quickfix/modifiers/afterNonFinalAccessorOfFinalProperty2.kt

@@ -0,0 +1,5 @@
+// "Make 'get' not open" "true"
+open class A() {
+    val i: Int = 1
+    <caret>get(): Int = $i
+}

idea/testData/quickfix/modifiers/afterOpenMemberInFinalClass1.kt

@@ -0,0 +1,4 @@
+// "Make 'A' open" "true"
+open class A() {
+    <caret>open fun foo() {}
+}

idea/testData/quickfix/modifiers/afterOpenMemberInFinalClass2.kt

@@ -0,0 +1,4 @@
+// "Make 'foo' not open" "true"
+class A() {
+    <caret>fun foo() {}
+}

idea/testData/quickfix/modifiers/beforeFinalTrait.kt

@@ -0,0 +1,2 @@
+// "Remove 'final' modifier" "true"
+<caret>final trait A {}

idea/testData/quickfix/modifiers/beforeNonFinalAccessorOfFinalProperty1.kt

@@ -0,0 +1,5 @@
+// "Make 'i' open" "true"
+open class A() {
+    val i: Int = 1
+    <caret>open get(): Int = $i
+}

idea/testData/quickfix/modifiers/beforeNonFinalAccessorOfFinalProperty2.kt

@@ -0,0 +1,5 @@
+// "Make 'get' not open" "true"
+open class A() {
+    val i: Int = 1
+    <caret>open get(): Int = $i
+}

idea/testData/quickfix/modifiers/beforeOpenMemberInFinalClass1.kt

@@ -0,0 +1,4 @@
+// "Make 'A' open" "true"
+class A() {
+    <caret>open fun foo() {}
+}

idea/testData/quickfix/modifiers/beforeOpenMemberInFinalClass2.kt

@@ -0,0 +1,4 @@
+// "Make 'foo' not open" "true"
+class A() {
+    <caret>open fun foo() {}
+}