Convert 'simplify when' from intention to inspection

Related to KT-20492

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/.inspection

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

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseAndElse1.kt

@@ -0,0 +1,6 @@
+fun test() {
+    val x = <caret>when {
+        false -> 1
+        else -> 2
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseAndElse1.kt.after

@@ -0,0 +1,3 @@
+fun test() {
+    val x = 2
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseAndElse2.kt

@@ -0,0 +1,13 @@
+// WITH_RUNTIME
+fun test() {
+    val x = <caret>when {
+        false -> {
+            println(1)
+            1
+        }
+        else -> {
+            println(2)
+            2
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseAndElse2.kt.after

@@ -0,0 +1,7 @@
+// WITH_RUNTIME
+fun test() {
+    val x = run {
+        println(2)
+        2
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseAndElse3.kt

@@ -0,0 +1,11 @@
+// WITH_RUNTIME
+fun test() {
+    <caret>when {
+        false -> {
+            println(1)
+        }
+        else -> {
+            println(2)
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseAndElse3.kt.after

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    println(2)
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseOnly1.kt

@@ -0,0 +1,6 @@
+// ERROR: 'when' expression must be exhaustive, add necessary 'else' branch
+fun test() {
+    val x = <caret>when {
+        false -> 1
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseOnly1.kt.after

@@ -0,0 +1,5 @@
+// ERROR: 'when' expression must be exhaustive, add necessary 'else' branch
+fun test() {
+    val x = when {
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseOnly2.kt

@@ -0,0 +1,10 @@
+// ERROR: 'when' expression must be exhaustive, add necessary 'else' branch
+// WITH_RUNTIME
+fun test() {
+    val x = <caret>when {
+        false -> {
+            println(1)
+            1
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseOnly2.kt.after

@@ -0,0 +1,6 @@
+// ERROR: 'when' expression must be exhaustive, add necessary 'else' branch
+// WITH_RUNTIME
+fun test() {
+    val x = when {
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseOnly3.kt

@@ -0,0 +1,8 @@
+// WITH_RUNTIME
+fun test() {
+    <caret>when {
+        false -> {
+            println(1)
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/falseOnly3.kt.after

@@ -0,0 +1,3 @@
+// WITH_RUNTIME
+fun test() {
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/hasSubject.kt

@@ -0,0 +1,8 @@
+// PROBLEM: none
+// WITH_RUNTIME
+fun test(b: Boolean) {
+    <caret>when(b) {
+        true -> println(1)
+        false -> println(2)
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/noBoolean.kt

@@ -0,0 +1,8 @@
+// PROBLEM: none
+// WITH_RUNTIME
+fun test(i: Int) {
+    <caret>when {
+        i == 1 -> println(1)
+        else -> println(2)
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsNotTop1.kt

@@ -0,0 +1,8 @@
+fun test(i: Int) {
+    val x = <caret>when {
+        i == 1 -> 1
+        false -> 2
+        true -> 3
+        else -> 4
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsNotTop1.kt.after

@@ -0,0 +1,6 @@
+fun test(i: Int) {
+    val x = when {
+        i == 1 -> 1
+        else -> 3
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsNotTop2.kt

@@ -0,0 +1,21 @@
+// WITH_RUNTIME
+fun test(i: Int) {
+    val x = <caret>when {
+        i == 1 -> {
+            println(1)
+            1
+        }
+        false -> {
+            println(2)
+            2
+        }
+        true -> {
+            println(3)
+            3
+        }
+        else -> {
+            println(4)
+            4
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsNotTop2.kt.after

@@ -0,0 +1,13 @@
+// WITH_RUNTIME
+fun test(i: Int) {
+    val x = when {
+        i == 1 -> {
+            println(1)
+            1
+        }
+        else -> {
+            println(3)
+            3
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsNotTop3.kt

@@ -0,0 +1,17 @@
+// WITH_RUNTIME
+fun test(i: Int) {
+    <caret>when {
+        i == 1 -> {
+            println(1)
+        }
+        false -> {
+            println(2)
+        }
+        true -> {
+            println(3)
+        }
+        else -> {
+            println(4)
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsNotTop3.kt.after

@@ -0,0 +1,11 @@
+// WITH_RUNTIME
+fun test(i: Int) {
+    when {
+        i == 1 -> {
+            println(1)
+        }
+        else -> {
+            println(3)
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsTop1.kt

@@ -0,0 +1,6 @@
+fun test() {
+    val x = <caret>when {
+        true -> 1
+        else -> 2
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsTop1.kt.after

@@ -0,0 +1,3 @@
+fun test() {
+    val x = 1
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsTop2.kt

@@ -0,0 +1,13 @@
+// WITH_RUNTIME
+fun test() {
+    val x = <caret>when {
+        true -> {
+            println(1)
+            1
+        }
+        else -> {
+            println(2)
+            2
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsTop2.kt.after

@@ -0,0 +1,7 @@
+// WITH_RUNTIME
+fun test() {
+    val x = run {
+        println(1)
+        1
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsTop3.kt

@@ -0,0 +1,11 @@
+// WITH_RUNTIME
+fun test() {
+    wh<caret>en {
+        true -> {
+            println(1)
+        }
+        else -> {
+            println(2)
+        }
+    }
+}

idea/testData/inspectionsLocal/simplifyWhenWithBooleanConstantCondition/trueIsTop3.kt.after

@@ -0,0 +1,4 @@
+// WITH_RUNTIME
+fun test() {
+    println(1)
+}