Redundant if inspection supports now assignments and just if (...) true else false #KT-13259 Fixed

idea/testData/quickfix/redundantIf/assignExpression.kt

@@ -0,0 +1,4 @@
+// "Remove redundant 'if' statement" "true"
+fun bar(p: Int) {
+    val v1 = <caret>if (p > 0) true else false
+}

idea/testData/quickfix/redundantIf/assignExpression.kt.after

@@ -0,0 +1,4 @@
+// "Remove redundant 'if' statement" "true"
+fun bar(p: Int) {
+    val v1 = p > 0
+}

idea/testData/quickfix/redundantIf/assignment.kt

@@ -0,0 +1,10 @@
+// "Remove redundant 'if' statement" "true"
+fun bar(p: Int) {
+    var v2 = false
+    <caret>if (p > 0) {
+        v2 = false
+    }
+    else {
+        v2 = true
+    }
+}

idea/testData/quickfix/redundantIf/assignment.kt.after

@@ -0,0 +1,5 @@
+// "Remove redundant 'if' statement" "true"
+fun bar(p: Int) {
+    var v2 = false
+    v2 = p <= 0
+}

idea/testData/quickfix/redundantIf/assignmentFake.kt

@@ -0,0 +1,10 @@
+// "Remove redundant 'if' statement" "false"
+// ACTION: Add braces to 'if' statement
+// ACTION: Invert 'if' condition
+// ACTION: Replace 'if' with 'when'
+
+fun bar(p: Int) {
+    var v1 = false
+    var v2 = false
+    <caret>if (p > 0) v2 = true else v1 = false
+}

idea/testData/quickfix/redundantIf/expression.kt

@@ -0,0 +1,5 @@
+// "Remove redundant 'if' statement" "true"
+fun bar(value: Int): Boolean {
+    val x = <caret>if (value % 2 == 0) false else true
+    return x
+}

idea/testData/quickfix/redundantIf/expression.kt.after

@@ -0,0 +1,5 @@
+// "Remove redundant 'if' statement" "true"
+fun bar(value: Int): Boolean {
+    val x = value % 2 != 0
+    return x
+}

idea/testData/quickfix/redundantIf/expressionBody.kt

@@ -0,0 +1,2 @@
+// "Remove redundant 'if' statement" "true"
+fun bar(value: Int) = <caret>if (value % 2 == 0) true else false

idea/testData/quickfix/redundantIf/expressionBody.kt.after

@@ -0,0 +1,2 @@
+// "Remove redundant 'if' statement" "true"
+fun bar(value: Int) = value % 2 == 0