Introduce "Delegate to 'var' property" inspection #KT-26724 Fixed

idea/testData/inspectionsLocal/delegationToVarProperty/.inspection

@@ -0,0 +1 @@
+org.jetbrains.kotlin.idea.inspections.DelegationToVarPropertyInspection

idea/testData/inspectionsLocal/delegationToVarProperty/parameter.kt

@@ -0,0 +1,9 @@
+// PROBLEM: none
+interface A {
+    fun foo()
+}
+class B : A {
+    override fun foo() {
+    }
+}
+class C(<caret>b: B) : A by b

idea/testData/inspectionsLocal/delegationToVarProperty/valParameter.kt

@@ -0,0 +1,8 @@
+// PROBLEM: none
+interface A {
+    fun foo()
+}
+class B : A {
+    override fun foo() {}
+}
+class C(<caret>val b: B) : A by b

idea/testData/inspectionsLocal/delegationToVarProperty/varParameter.kt

@@ -0,0 +1,8 @@
+// FIX: Change to val
+interface A {
+    fun foo()
+}
+class B : A {
+    override fun foo() {}
+}
+class C(<caret>var b: B) : A by b

idea/testData/inspectionsLocal/delegationToVarProperty/varParameter.kt.after

@@ -0,0 +1,8 @@
+// FIX: Change to val
+interface A {
+    fun foo()
+}
+class B : A {
+    override fun foo() {}
+}
+class C(val b: B) : A by b

idea/testData/inspectionsLocal/delegationToVarProperty/varParameter2.kt

@@ -0,0 +1,8 @@
+// FIX: Remove var
+interface A {
+    fun foo()
+}
+class B : A {
+    override fun foo() {}
+}
+class C(var b: B<caret>) : A by b

idea/testData/inspectionsLocal/delegationToVarProperty/varParameter2.kt.after

@@ -0,0 +1,8 @@
+// FIX: Remove var
+interface A {
+    fun foo()
+}
+class B : A {
+    override fun foo() {}
+}
+class C(b: B) : A by b