Created module idea-test-framework and moved classes needed for idea tests there

Moved tests for completion and their test data into module idea-completion

idea/idea-completion/testData/smart/inElvisOperator/1.kt

@@ -0,0 +1,9 @@
+fun foo(p: String?){}
+fun foo(p: Char){}
+
+fun bar(p1: String?, p2: String?, p3: Char) {
+    foo(p1 ?: <caret>
+}
+
+// EXIST: { itemText:"p2" }
+// ABSENT: p3

idea/idea-completion/testData/smart/inElvisOperator/2.kt

@@ -0,0 +1,12 @@
+fun foo1(): String? = null
+fun foo2(): String? = null
+fun foo3(): String = ""
+
+fun bar() {
+    foo1() ?: <caret>
+}
+
+// EXIST: { itemText:"foo3" }
+// ABSENT: { itemText:"foo2" }
+// EXIST: { itemText:"!! foo2" }
+// EXIST: { itemText:"?: foo2" }

idea/idea-completion/testData/smart/inElvisOperator/3.kt

@@ -0,0 +1,20 @@
+trait A
+trait B : A
+trait C
+
+fun foo(a: A){}
+fun foo(c: C){}
+
+fun A.bar(a: A, b: B, c: C, a1: A?, b1: B?, c1: C?) {
+    foo(this ?: <caret>
+}
+
+// EXIST: { itemText:"a" }
+// EXIST: { itemText:"b" }
+// ABSENT: { itemText:"c" }
+// ABSENT: { itemText:"a1" }
+// ABSENT: { itemText:"b1" }
+// ABSENT: { itemText:"c1" }
+// EXIST: { itemText:"!! a1" }
+// EXIST: { itemText:"!! b1" }
+// ABSENT: { itemText:"!! c1" }

idea/idea-completion/testData/smart/inElvisOperator/4.kt

@@ -0,0 +1,20 @@
+trait A
+trait B : A
+trait C
+
+fun foo(a: A?){}
+fun foo(c: C?){}
+
+fun A.bar(a: A, b: B, c: C, a1: A?, b1: B?, c1: C?) {
+    foo(this ?: <caret>
+}
+
+// EXIST: { itemText:"a" }
+// EXIST: { itemText:"b" }
+// ABSENT: { itemText:"c" }
+// EXIST: { itemText:"a1" }
+// EXIST: { itemText:"b1" }
+// ABSENT: { itemText:"c1" }
+// ABSENT: { itemText:"!! a1" }
+// ABSENT: { itemText:"!! b1" }
+// ABSENT: { itemText:"!! c1" }

idea/idea-completion/testData/smart/inElvisOperator/5.kt

@@ -0,0 +1,20 @@
+trait A
+trait B : A
+trait C
+
+fun foo(a: A){}
+fun foo(c: C){}
+
+fun B.bar(a: A, b: B, c: C, a1: A?, b1: B?, c1: C?) {
+    foo(this ?: <caret>
+}
+
+// EXIST: { itemText:"a" }
+// EXIST: { itemText:"b" }
+// ABSENT: { itemText:"c" }
+// ABSENT: { itemText:"a1" }
+// ABSENT: { itemText:"b1" }
+// ABSENT: { itemText:"c1" }
+// EXIST: { itemText:"!! a1" }
+// EXIST: { itemText:"!! b1" }
+// ABSENT: { itemText:"!! c1" }

idea/idea-completion/testData/smart/inElvisOperator/6.kt

@@ -0,0 +1,20 @@
+trait A
+trait B : A
+trait C
+
+fun foo(a: A){}
+fun foo(c: C){}
+
+fun B?.bar(a: A, b: B, c: C, a1: A?, b1: B?, c1: C?) {
+    foo(this ?: <caret>
+}
+
+// EXIST: { itemText:"a" }
+// EXIST: { itemText:"b" }
+// ABSENT: { itemText:"c" }
+// ABSENT: { itemText:"a1" }
+// ABSENT: { itemText:"b1" }
+// ABSENT: { itemText:"c1" }
+// EXIST: { itemText:"!! a1" }
+// EXIST: { itemText:"!! b1" }
+// ABSENT: { itemText:"!! c1" }