         waitForExpectations()
     }
 
-    /** Translate a text string, specifying the model by source and target language. */
     func testTranslateStringWithSourceAndTarget() {
-        let description = "Translate text string, specifying the model by source and target."
-        let expectation = self.expectation(description: description)
+        let expectation = self.expectation(description: "Translate text string using source and target.")
         let request = TranslateRequest(text: ["Hello"], source: "en", target: "es")
         languageTranslator.translate(body: request, failure: failWithError) {
             translation in

        waitForExpectations()
    }

    /** Get a model's training status. */
    func testGetModel() {
        let description = "Get a model's training status."
        let expectation = self.expectation(description: description)

        languageTranslator.getModel(modelID: "en-es", failure: failWithError) { model in
            XCTAssertEqual(model.status, TranslationModel.Status.available.rawValue)
            expectation.fulfill()

        waitForExpectations()
    }

    func testListIdentifiableLanguages() {
        let expectation = self.expectation(description: "List identifiable languages.")
        languageTranslator.listIdentifiableLanguages(failure: failWithError) { identifiableLanguages in
            XCTAssertGreaterThan(identifiableLanguages.languages.count, 0)
            expectation.fulfill()
