fix(javascript): modify JavaScriptVersionProvider and add JavaScriptVersionProviderTest

- Modify `JavaScriptVersionProvider` to remove unnecessary code and improve readability.
- Add `JavaScriptVersionProviderTest` to test the functionality of `JavaScriptVersionProvider`.
- Add test cases to verify the behavior of `isApplicable` and `collect` methods.

Author: phodal

javascript/src/main/kotlin/cc/unitmesh/ide/javascript/provider/JavaScriptVersionProvider.kt

@@ -8,7 +8,6 @@ import com.intellij.openapi.project.Project
 
 class JavaScriptVersionProvider : ChatContextProvider {
     override fun isApplicable(project: Project, creationContext: ChatCreationContext): Boolean {
-        val language = creationContext.sourceFile?.language ?: return false
         return LanguageApplicableUtil.isWebChatCreationContextSupported(creationContext.sourceFile)
     }
 
@@ -22,7 +21,6 @@ class JavaScriptVersionProvider : ChatContextProvider {
         return ChatContextItem(
             JavaScriptContextProvider::class,
             "Prefer $preferType language if the used language and toolset are not defined below or in the user messages"
-        )
-            .let { listOf(it) }
+        ).let { listOf(it) }
     }
 }

javascript/src/test/kotlin/cc/unitmesh/ide/javascript/provider/JavaScriptVersionProviderTest.kt

@@ -0,0 +1,64 @@
+package cc.unitmesh.ide.javascript.provider;
+
+import cc.unitmesh.devti.gui.chat.ChatActionType
+import cc.unitmesh.devti.provider.context.ChatCreationContext
+import cc.unitmesh.devti.provider.context.ChatOrigin
+import com.intellij.lang.javascript.JavascriptLanguage
+import com.intellij.lang.javascript.dialects.TypeScriptLanguageDialect
+import com.intellij.lang.javascript.psi.ecmal4.JSClass
+import com.intellij.psi.PsiFile
+import com.intellij.psi.PsiFileFactory
+import com.intellij.testFramework.LightPlatformTestCase
+import kotlinx.coroutines.runBlocking
+
+class JavaScriptVersionProviderTest : LightPlatformTestCase() {
+    private val code = """
+            export class Foo {
+                constructor() {
+                }
+            }
+        """.trimIndent()
+    fun `testShould return true when isApplicable is called with supported creationContext`() {
+        // given
+        val file: PsiFile =
+            PsiFileFactory.getInstance(project).createFileFromText(JavascriptLanguage.INSTANCE, code)
+        val jsClazz = file.children.first() as JSClass
+        val creationContext = ChatCreationContext(
+            ChatOrigin.ChatAction,
+            ChatActionType.GENERATE_TEST,
+            sourceFile = file,
+            element = jsClazz
+        )
+
+        // when
+        val provider = JavaScriptVersionProvider()
+        val result = provider.isApplicable(project, creationContext)
+
+        // then
+        assertTrue(result)
+    }
+
+    fun testShouldReturnPreferTypeScriptWhenCallWithCollect() {
+        // given
+        val file: PsiFile =
+            PsiFileFactory.getInstance(project).createFileFromText(JavascriptLanguage.INSTANCE, code)
+
+        val jsClazz = file.children.first() as JSClass
+        val creationContext = ChatCreationContext(
+            ChatOrigin.ChatAction,
+            ChatActionType.GENERATE_TEST,
+            sourceFile = file,
+            element = jsClazz
+        )
+
+        // when
+        val provider = JavaScriptVersionProvider()
+        val result = runBlocking { provider.collect(project, creationContext) }
+
+        // then
+        assertEquals(
+            "Prefer JavaScript language if the used language and toolset are not defined below or in the user messages",
+            result.first().text
+        )
+    }
+}

javascript/src/test/kotlin/cc/unitmesh/ide/javascript/util/JSPsiUtilTest.kt

@@ -1,6 +1,7 @@
 package cc.unitmesh.ide.javascript.util;
 
 import com.intellij.lang.javascript.JavascriptLanguage
+import com.intellij.lang.javascript.dialects.TypeScriptLanguageDialect
 import com.intellij.lang.javascript.psi.JSFunction
 import com.intellij.lang.javascript.psi.ecmal4.JSClass
 import com.intellij.psi.PsiFileFactory