added possible fixes for playwright code

Author: FredRaw

core/src/main/kotlin/org/evomaster/core/output/service/ApiTestCaseWriter.kt

@@ -328,7 +328,7 @@ abstract class ApiTestCaseWriter : TestCaseWriter() {
             val instruction = when {
                 format.isJavaOrKotlin() -> ".body(\"${fieldPath}\", nullValue())"
                 format.isPlaywright() -> "expect(($field)${if (fieldPath.isEmpty()) "" else if (fieldPath.startsWith("[")) fieldPath else ".$fieldPath"}).toBe(null);"
-                format.isJavaScript() -> "expect(($field)$fieldPath).toBe(null);"
+                format.isJavaScript() -> "expect($field$fieldPath).toBe(null);" // ($field$)fieldPath
                 format.isCsharp() -> "Assert.True($responseVariableName$fieldPath == null);"
                 format.isPython() -> "assert $responseVariableName.json()$fieldPath is None"
                 else -> throw IllegalStateException("Format not supported yet: $format")
@@ -386,7 +386,7 @@ abstract class ApiTestCaseWriter : TestCaseWriter() {
                     val assertionContent = if (format.isPython()) {
                         "assert $responseVariableName.json()$fieldPath == $toPrint"
                     }else { // javascript
-                        "expect(($field)$fieldPath).toBe($toPrint);"
+                        "expect($field$fieldPath).toBe($toPrint);" // ($field$)fieldPath
                     }
 
                     if (flakyValue == null || flakyValue == value){
@@ -578,7 +578,7 @@ abstract class ApiTestCaseWriter : TestCaseWriter() {
                 if (format.isPlaywright()) {
                     "expect(await $responseVariableName.json()).toHaveLength($expectedSize);"
                 } else {
-                    "expect(($field)$fieldPath.length).toBe($expectedSize);"
+                    "expect($field$fieldPath.length).toBe($expectedSize);" // ($field$)fieldPath
                 }
             }
             format.isCsharp() ->

core/src/main/kotlin/org/evomaster/core/output/service/HttpWsTestCaseWriter.kt

@@ -104,7 +104,8 @@ abstract class HttpWsTestCaseWriter : ApiTestCaseWriter() {
             when {
                 format.isKotlin() -> lines.append("val $resVarName: ValidatableResponse = ")
                 format.isJava() -> lines.append("ValidatableResponse $resVarName = ")
-                format.isJavaScript() && format.isPlaywright()-> lines.append("const $resVarName = ")
+                format.isPlaywright() -> lines.append("const $resVarName = ")
+                format.isJavaScript() -> lines.append("const $resVarName = ")
                 format.isPython() -> lines.append("$resVarName = ")
                 format.isCsharp() -> lines.append("var $resVarName = ")
             }
@@ -113,7 +114,7 @@ abstract class HttpWsTestCaseWriter : ApiTestCaseWriter() {
         when {
             format.isJavaOrKotlin() -> lines.append("given()")
             format.isPlaywright() -> lines.append("await request")
-            format.isJavaScript() && !format.isPlaywright() -> lines.append("await superagent")
+            format.isJavaScript() -> lines.append("await superagent")
             format.isCsharp() -> lines.append("await Client")
             format.isPython() -> lines.append("requests \\")
         }
@@ -333,7 +334,7 @@ abstract class HttpWsTestCaseWriter : ApiTestCaseWriter() {
                 }
                 lines.addEmpty()
                 lines.add("const body = await $responseVariableName.json();")
-                lines.add("$responseVariableName.body = body;")
+                lines.add("  = body;")
                 lines.addEmpty()
             }