[Spec tests] Add tests for prefix-decrement-expression

compiler/tests-spec/testData/diagnostics/linked/expressions/prefix-expressions/prefix-decrement-expression/p-4/neg/1.1.kt

@@ -0,0 +1,44 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_VARIABLE -ASSIGNED_BUT_NEVER_ACCESSED_VARIABLE -UNUSED_VALUE -UNUSED_PARAMETER -UNUSED_EXPRESSION
+// SKIP_TXT
+
+/*
+ * KOTLIN DIAGNOSTICS SPEC TEST (NEGATIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, prefix-expressions, prefix-decrement-expression -> paragraph 4 -> sentence 1
+ * RELEVANT PLACES: statements, assignments -> paragraph 3 -> sentence 2
+ * NUMBER: 1
+ * DESCRIPTION: check unsafe prefix decrement expression call for an assignable expression
+ */
+class A() {
+    var i = 0
+
+    operator fun dec(): A {
+        this.i--
+        return this
+    }
+}
+
+// TESTCASE NUMBER: 1
+
+fun case1() {
+    var b: Case1? = Case1()
+    <!UNSAFE_CALL!>--<!>b?.a
+}
+
+
+class Case1() {
+    var a: A = A()
+}
+
+// TESTCASE NUMBER: 2
+
+fun case2() {
+    var b= Case2()
+    --<!VAL_REASSIGNMENT!>b.a<!>
+}
+
+class Case2() {
+    val a = A()
+}

compiler/tests-spec/testData/diagnostics/linked/expressions/prefix-expressions/prefix-decrement-expression/p-5/neg/2.1.kt

@@ -0,0 +1,47 @@
+// !LANGUAGE: +NewInference
+// !DIAGNOSTICS: -UNUSED_VARIABLE -ASSIGNED_BUT_NEVER_ACCESSED_VARIABLE -UNUSED_VALUE -UNUSED_PARAMETER -UNUSED_EXPRESSION
+// SKIP_TXT
+
+/*
+ * KOTLIN DIAGNOSTICS SPEC TEST (NEGATIVE)
+ *
+ * SPEC VERSION: 0.1-213
+ * PLACE: expressions, prefix-expressions, prefix-decrement-expression -> paragraph 5 -> sentence 2
+ * NUMBER: 1
+ * DESCRIPTION: check as the result of dec is assigned to A, the return type of inc must be a subtype of A.
+ */
+
+// TESTCASE NUMBER: 1
+
+fun case1() {
+    var a = Case1()
+    val res: Any? = <!RESULT_TYPE_MISMATCH!>++<!>a
+}
+
+
+class Case1() {
+
+    <!INAPPLICABLE_OPERATOR_MODIFIER!>operator<!> fun inc(): B {
+        TODO()
+    }
+}
+
+class B() {}
+
+// TESTCASE NUMBER: 2
+
+fun case2() {
+    var a = Case2()
+    val res: Any? = <!RESULT_TYPE_MISMATCH!>++<!>a
+}
+
+class Case2() : C() {
+    var i = 0
+
+    <!INAPPLICABLE_OPERATOR_MODIFIER!>operator<!> fun inc(): C {
+        TODO()
+    }
+
+}
+
+open class C() {}

compiler/tests-spec/testData/diagnostics/linked/expressions/prefix-expressions/prefix-decrement-expression/testsMap.json

@@ -0,0 +1,26 @@
+{
+  "4": {
+    "neg": {
+      "1": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 2,
+          "description": "check unsafe prefix decrement expression call for an assignable expression",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  },
+  "5": {
+    "neg": {
+      "2": [
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 2,
+          "description": "check as the result of dec is assigned to A, the return type of inc must be a subtype of A.",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  }
+}

compiler/tests-spec/testData/diagnostics/linked/expressions/prefix-expressions/prefix-increment-expression/p-5/neg/2.1.kt

@@ -15,13 +15,13 @@
 
 fun case1() {
     var a = Case1()
-    val res: Any? = <!RESULT_TYPE_MISMATCH!>++<!>a
+    val res: Any? = <!RESULT_TYPE_MISMATCH!>--<!>a
 }
 
 
 class Case1() {
 
-    <!INAPPLICABLE_OPERATOR_MODIFIER!>operator<!> fun inc(): B {
+    <!INAPPLICABLE_OPERATOR_MODIFIER!>operator<!> fun dec(): B {
         TODO()
     }
 }
@@ -32,13 +32,13 @@ class B() {}
 
 fun case2() {
     var a = Case2()
-    val res: Any? = <!RESULT_TYPE_MISMATCH!>++<!>a
+    val res: Any? = <!RESULT_TYPE_MISMATCH!>--<!>a
 }
 
 class Case2() : C() {
     var i = 0
 
-    <!INAPPLICABLE_OPERATOR_MODIFIER!>operator<!> fun inc(): C {
+    <!INAPPLICABLE_OPERATOR_MODIFIER!>operator<!> fun dec(): C {
         TODO()
     }
 

compiler/tests-spec/testData/diagnostics/linked/statements/assignments/testsMap.json

@@ -8,6 +8,13 @@
           "description": "check unsafe prefix increment expression call for an assignable expression",
           "path": "compiler/tests-spec/testData/diagnostics/linked/expressions/prefix-expressions/prefix-increment-expression/p-4/neg/1.1.kt",
           "unexpectedBehaviour": false
+        },
+        {
+          "specVersion": "0.1-213",
+          "casesNumber": 2,
+          "description": "check unsafe prefix decrement expression call for an assignable expression",
+          "path": "compiler/tests-spec/testData/diagnostics/linked/expressions/prefix-expressions/prefix-decrement-expression/p-4/neg/1.1.kt",
+          "unexpectedBehaviour": false
         }
       ]
     }