[Spec tests] Add test for return expression

compiler/tests-spec/testData/diagnostics/linked/expressions/jump-expressions/return-expressions/p-5/neg/2.1.kt

@@ -0,0 +1,22 @@
+// !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: 0.1-218
+ * PLACE: expressions, jump-expressions, return-expressions -> paragraph 5 -> sentence 2
+ * NUMBER: 1
+ * DESCRIPTION: check returning is not allowed from run{...}
+ */
+
+// TESTCASE NUMBER: 1
+// UNEXPECTED BEHAVIOUR
+// ISSUES : KT-35545
+fun <!IMPLICIT_NOTHING_RETURN_TYPE!>case1<!>(a: Boolean) = run { println("d"); return <!TYPE_MISMATCH!>true<!> }
+
+// TESTCASE NUMBER: 2
+val <!IMPLICIT_NOTHING_PROPERTY_TYPE!>case2<!>
+get() = run { println("d"); return <!TYPECHECKER_HAS_RUN_INTO_RECURSIVE_PROBLEM!>true<!> }
+

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

@@ -0,0 +1,14 @@
+{
+  "5": {
+    "neg": {
+      "2": [
+        {
+          "specVersion": "0.1-218",
+          "casesNumber": 2,
+          "description": "check returning is not allowed from run{...}",
+          "unexpectedBehaviour": false
+        }
+      ]
+    }
+  }
+}

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

@@ -178,7 +178,7 @@
       "2": [
         {
           "specVersion": "0.1-218",
-          "casesNumber": 2,
+          "casesNumber": 3,
           "description": "The else condition must also be in the last when entry of when expression, otherwise it is a compile-time error",
           "unexpectedBehaviour": false
         }