[Spec tests] Add spec tests for kotlin.Nothing, kotlin.Unit, reference equality and cast expressions

compiler/tests-spec/testData/diagnostics/linked/expressions/built-in-types-and-their-semantics/kotlin.nothing-1/p-1/pos/1.1.kt

@@ -0,0 +1,69 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_VARIABLE -ASSIGNED_BUT_NEVER_ACCESSED_VARIABLE -UNUSED_VALUE -UNUSED_PARAMETER -UNUSED_EXPRESSION
+// SKIP_TXT
+
+/*
+ * KOTLIN DIAGNOSTICS SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, built-in-types-and-their-semantics, kotlin.nothing-1 -> paragraph 1 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION: check the type of jump expressions is Nothing and code placed on the left side of expression will never be executed
+ */
+
+
+// TESTCASE NUMBER: 1
+
+fun case1() {
+    var name: Any? = null
+    val men = arrayListOf(Person("Phill"), Person(), Person("Bob"))
+    for (k in men) {
+        k.name
+        loop@ for (i in men) {
+            i.name
+            <!UNREACHABLE_CODE!>val valeua : Int =<!>     break@loop
+            <!UNREACHABLE_CODE!>i.name<!>
+        }
+        k.name
+        val s = k.name ?: break
+        k.name
+    }
+    val a = 1
+}
+
+class Person(var name: String? = null) {}
+
+// TESTCASE NUMBER: 2
+
+fun case2() {
+    var name: Any? = null
+    val men = arrayListOf(Person("Phill"), Person(), Person("Bob"))
+    for (k in men) {
+        loop@ for (i in men) {
+            i.name
+            <!UNREACHABLE_CODE!>val val1 =<!>    continue@loop
+            <!UNREACHABLE_CODE!>val1<!>
+            <!UNREACHABLE_CODE!>i.name<!>
+        }
+        val s = k.name ?: continue
+        k.name
+    }
+    val a = 1
+}
+
+// TESTCASE NUMBER: 3
+
+fun case3() {
+    listOf(1, 2, 3, 4, 5).forEach { x ->
+        val k = x
+
+        listOf(1, 2, 3, 4, 5).forEach lit@{
+            it
+            return@lit
+            <!UNREACHABLE_CODE!>print(it)<!>
+        }
+        val y = x
+        if (x == 3) return
+    }
+    val a = 1
+}

compiler/tests-spec/testData/diagnostics/linked/expressions/built-in-types-and-their-semantics/kotlin.nothing-1/testsMap.json

@@ -0,0 +1,14 @@
+{
+  "1": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 3,
+          "description": "check the type of jump expressions is Nothing and code placed on the left side of expression will never be executed",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  }
+}

compiler/tests-spec/testData/diagnostics/linked/expressions/jump-expressions/p-2/pos/1.1.kt

@@ -0,0 +1,57 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_VARIABLE -ASSIGNED_BUT_NEVER_ACCESSED_VARIABLE -UNUSED_VALUE -UNUSED_PARAMETER -UNUSED_EXPRESSION -UNREACHABLE_CODE
+// SKIP_TXT
+
+/*
+ * KOTLIN DIAGNOSTICS SPEC TEST (POSITIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, jump-expressions -> paragraph 2 -> sentence 1
+ * NUMBER: 1
+ * DESCRIPTION: check he type of jump expressions is the kotlin.Nothing
+ */
+
+// TESTCASE NUMBER: 1
+
+fun case1() {
+    var name: Any? = null
+    val men = arrayListOf(Person("Phill"), Person(), Person("Bob"))
+    for (k in men) {
+        k.name
+        loop@ for (i in men) {
+            val val1: Int = <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>break@loop<!>
+            <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Int")!>val1<!>
+        }
+        val s = k.name ?: <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>break<!>
+        <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.String")!>s<!>
+    }
+}
+
+class Person(var name: String? = null) {}
+
+// TESTCASE NUMBER: 2
+
+fun case2() {
+    var name: Any? = null
+    val men = arrayListOf(Person("Phill"), Person(), Person("Bob"))
+    for (k in men) {
+        loop@ for (i in men) {
+            val val1 = <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>continue@loop<!>
+            <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>val1<!>
+        }
+        val s = k.name ?: <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>continue<!>
+        <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.String")!>s<!>
+    }
+}
+
+// TESTCASE NUMBER: 3
+
+fun case3() {
+    listOf(1, 2, 3, 4, 5).forEach { x ->
+        listOf(1, 2, 3, 4, 5).forEach lit@{
+            val s = <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>return@lit<!>
+            <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>s<!>
+        }
+        if (x == 3) <!DEBUG_INFO_EXPRESSION_TYPE("kotlin.Nothing")!>return<!>
+    }
+}

compiler/tests-spec/testData/diagnostics/linked/expressions/jump-expressions/testsMap.json

@@ -0,0 +1,14 @@
+{
+  "2": {
+    "pos": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 3,
+          "description": "check he type of jump expressions is the kotlin.Nothing",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  }
+}