[Spec tests] Add tests for type-checking-expression

compiler/tests-spec/testData/codegen/box/linked/expressions/type-checking-and-containment-checking-expressions/type-checking-expression/p-1/neg/2.1.exceptions.compiletime.txt

@@ -0,0 +1 @@
+java.lang.IllegalStateException: CANNOT_CHECK_FOR_ERASED: Cannot check for instance of erased type: A<Long> (16,18) in /2.1.kt

compiler/tests-spec/testData/codegen/box/linked/expressions/type-checking-and-containment-checking-expressions/type-checking-expression/p-1/neg/2.1.kt

@@ -0,0 +1,19 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (NEGATIVE)
+ *
+ * SPEC VERSION: 0.1-218
+ * PLACE: expressions, type-checking-and-containment-checking-expressions, type-checking-expression -> paragraph 1 -> sentence 2
+ * NUMBER: 1
+ * DESCRIPTION: E is T: The type T must be runtime-available, otherwise it is a compiler error
+ * EXCEPTION: compiletime
+ */
+
+fun box() {
+    val x = A(1)
+
+    val y = x is A<Long>
+}
+
+class A<T>(val a: T)

compiler/tests-spec/testData/codegen/box/linked/expressions/type-checking-and-containment-checking-expressions/type-checking-expression/p-4/pos/1.1.kt

@@ -0,0 +1,20 @@
+// WITH_RUNTIME
+
+/*
+ * KOTLIN CODEGEN BOX SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-218
+ * PLACE: expressions, type-checking-and-containment-checking-expressions, type-checking-expression -> paragraph 4 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION: the expression null is T? for any type T always evaluates to true
+ */
+
+fun box(): String {
+    val x  = null
+    if (x is Any? && x is Nothing? && x is String? && x is A?)
+        if (!((x !is Any?) || (x !is Nothing?) || (x !is String?) || (x !is A?)))
+        return "OK"
+    return "NOK"
+}
+
+class A()

compiler/tests-spec/testData/codegen/box/linked/expressions/type-checking-and-containment-checking-expressions/type-checking-expression/testsMap.json

@@ -1,5 +1,15 @@
 {
   "1": {
+    "neg": {
+      "2": [
+        {
+          "specVersion": "0.1-218",
+          "casesNumber": 0,
+          "description": "E is T: The type T must be runtime-available, otherwise it is a compiler error",
+          "unexpectedBehaviour": false
+        }
+      ]
+    },
     "pos": {
       "3": [
         {
@@ -16,5 +26,17 @@
         }
       ]
     }
+  },
+  "4": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-218",
+          "casesNumber": 0,
+          "description": "the expression null is T? for any type T always evaluates to true",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
   }
 }

compiler/tests-spec/testData/diagnostics/linked/expressions/type-checking-and-containment-checking-expressions/type-checking-expression/p-3/pos/1.1.kt

@@ -0,0 +1,39 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -USELESS_IS_CHECK USELESS_NULLABLE_CHECK -UNUSED_VALUE -UNUSED_PARAMETER -UNREACHABLE_CODE -UNUSED_VARIABLE -USELESS_NULLABLE_CHECK
+// SKIP_TXT
+
+/*
+ * KOTLIN DIAGNOSTICS SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-218
+ * PLACE: expressions, type-checking-and-containment-checking-expressions, type-checking-expression -> paragraph 3 -> sentence 1
+ * RELEVANT PLACES: expressions, type-checking-and-containment-checking-expressions, type-checking-expression -> paragraph 4 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION: Type-checking expression always has type kotlin.Boolean.
+ * HELPERS: checkType
+ */
+
+// TESTCASE NUMBER: 1
+fun case1() {
+    val x = null is Nothing
+    x checkType { check<Boolean>() }
+}
+
+// TESTCASE NUMBER: 2
+fun case2() {
+    ("" !is String) checkType { check<Boolean>() }
+}
+
+// TESTCASE NUMBER: 3
+fun case3(n: Nothing) {
+    val x = n is Nothing
+    x checkType { check<Boolean>() }
+}
+
+// TESTCASE NUMBER: 4
+fun case4() {
+    val x = A() is Any?
+    x checkType { check<Boolean>() }
+}
+
+class A

compiler/tests-spec/testData/diagnostics/linked/expressions/type-checking-and-containment-checking-expressions/type-checking-expression/testsMap.json

@@ -0,0 +1,27 @@
+{
+  "3": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-218",
+          "casesNumber": 4,
+          "description": "Type-checking expression always has type kotlin.Boolean.",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
+  "4": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-218",
+          "casesNumber": 4,
+          "description": "Type-checking expression always has type kotlin.Boolean.",
+          "path": "compiler/tests-spec/testData/diagnostics/linked/expressions/type-checking-and-containment-checking-expressions/type-checking-expression/p-3/pos/1.1.kt",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  }
+}