[REPL] Fix syntax errors analysis and incompleteness detection

plugins/scripting/scripting-ide-services-test/test/org/jetbrains/kotlin/scripting/ide_services/ReplCompletionAndErrorsAnalysisTest.kt

@@ -198,6 +198,20 @@ class ReplCompletionAndErrorsAnalysisTest : TestCase() {
         }
     }
 
+    @Test
+    fun testIncompleteCode() = test {
+        run {
+            doErrorCheck
+
+            code = "fun g(): Int { return 1"
+
+            expect {
+                addError(1, 24, 1, 24, "Expecting '}'", "ERROR")
+                errors.add(ScriptDiagnostic(ScriptDiagnostic.incompleteCode, "Incomplete code"))
+            }
+        }
+    }
+
     @Test
     fun testCompletionDuplication() = test {
         for (i in 1..6) {

plugins/scripting/scripting-ide-services-test/test/org/jetbrains/kotlin/scripting/ide_services/test_util/testConfiguration.kt

@@ -283,7 +283,7 @@ private suspend fun checkEvaluateInRepl(
 
                 checkLists(index, "completions", expectedCompletions.list, completionsRes, expectedCompletions)
                 val expectedErrorsWithPath = expectedErrors.list.map {
-                    it.copy(sourcePath = errorsRes.firstOrNull()?.sourcePath)
+                    if (it.location != null) it.copy(sourcePath = errorsRes.firstOrNull()?.sourcePath) else it
                 }
                 checkLists(index, "errors", expectedErrorsWithPath, errorsRes, expectedErrors)
                 TestCase.assertEquals("Analysis result types are different", expectedResultType, resultType)