Add test cases for current translations WASM bindings

Adds test cases that test the current translation functionality
end-to-end, including plaint-text translations and HTML translations.

inference/wasm/tests/test-cases/shared.mjs

@@ -0,0 +1,36 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { it, expect } from "vitest";
+import { TranslationsEngine } from "./engine/translations-engine.mjs";
+
+/**
+ * Runs a translation test, constructing a Translations Engine for the given
+ * sourceLanguage and targetLanguage, then asserting that the translation of
+ * the sourceText matches the expectedText.
+ *
+ * @param {Object} params - The parameters for the test.
+ * @param {string} params.sourceLanguage - The source language code.
+ * @param {string} params.targetLanguage - The target language code.
+ * @param {string} params.sourceText - The text to translate.
+ * @param {string} params.expectedText - The expected translated text.
+ * @param {boolean} params.isHTML - Whether the text to translate contains HTML tags.
+ */
+export function runTranslationTest({
+  sourceLanguage,
+  targetLanguage,
+  sourceText,
+  expectedText,
+  isHTML = false,
+}) {
+  it(`(${sourceLanguage} -> ${targetLanguage}): Translate "${sourceText}"`, async () => {
+    const translator = new TranslationsEngine(sourceLanguage, targetLanguage);
+
+    const translatedText = await translator.translate(sourceText, isHTML);
+
+    expect(translatedText).toBe(expectedText);
+
+    translator.terminate();
+  });
+}

inference/wasm/tests/test-cases/translate-html-no-pivot.test.mjs

@@ -0,0 +1,46 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { describe } from "vitest";
+import { runTranslationTest } from "./test-cases/shared.mjs";
+
+/**
+ * This file tests the WASM bindings for non-pivot translation requests
+ * that contain HTML tags within the source text.
+ */
+
+const testCases = [
+  {
+    sourceLanguage: "es",
+    targetLanguage: "en",
+    sourceText: "<b>El perro</b> azul.",
+    expectedText: "<b>The</b> blue <b>dog</b>.",
+    isHTML: true,
+  },
+  {
+    sourceLanguage: "en",
+    targetLanguage: "es",
+    sourceText: "<b>The blue</b> dog.",
+    expectedText: "<b>El</b> perro <b>azul</b>.",
+    isHTML: true,
+  },
+  {
+    sourceLanguage: "fr",
+    targetLanguage: "en",
+    sourceText: "<b>Le chien</b> bleu.",
+    expectedText: "<b>The</b> blue <b>dog</b>.",
+    isHTML: true,
+  },
+  {
+    sourceLanguage: "en",
+    targetLanguage: "fr",
+    sourceText: "<b>The blue</b> dog.",
+    expectedText: "<b>Le</b> chien <b>bleu</b>.",
+    isHTML: true,
+  },
+];
+
+describe("HTML Non-Pivot Translations", () => {
+  testCases.forEach(runTranslationTest);
+});

inference/wasm/tests/test-cases/translate-html-with-pivot.test.mjs

@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { describe } from "vitest";
+import { runTranslationTest } from "./test-cases/shared.mjs";
+
+/**
+ * This file tests the WASM bindings for pivot translation requests
+ * that contain HTML tags within the source text.
+ */
+
+const testCases = [
+  {
+    sourceLanguage: "es",
+    targetLanguage: "fr",
+    sourceText: "<b>El perro</b> azul.",
+    expectedText: "<b>Le chien</b> bleu.",
+    isHTML: true,
+  },
+  {
+    sourceLanguage: "fr",
+    targetLanguage: "es",
+    sourceText: "<b>Le chien</b> bleu.",
+    expectedText: "<b>El perro</b> azul.",
+    isHTML: true,
+  },
+];
+
+describe("HTML Pivot Translations", () => {
+  testCases.forEach(runTranslationTest);
+});

inference/wasm/tests/test-cases/translate-plain-text-no-pivot.test.mjs

@@ -0,0 +1,42 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { describe } from "vitest";
+import { runTranslationTest } from "./test-cases/shared.mjs";
+
+/**
+ * This file tests the WASM bindings for non-pivot translation requests
+ * that contain only plain text without HTML tags.
+ */
+
+const testCases = [
+  {
+    sourceLanguage: "es",
+    targetLanguage: "en",
+    sourceText: "Hola mundo",
+    expectedText: "Hello world",
+  },
+  {
+    sourceLanguage: "en",
+    targetLanguage: "es",
+    sourceText: "Hello world",
+    expectedText: "Hola mundo",
+  },
+  {
+    sourceLanguage: "fr",
+    targetLanguage: "en",
+    sourceText: "Bonjour le monde",
+    expectedText: "Hello world",
+  },
+  {
+    sourceLanguage: "en",
+    targetLanguage: "fr",
+    sourceText: "Hello world",
+    expectedText: "Bonjour le monde",
+  },
+];
+
+describe("Plain-Text Non-Pivot Translations", () => {
+  testCases.forEach(runTranslationTest);
+});

inference/wasm/tests/test-cases/translate-plain-text-with-pivot.test.mjs

@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+import { describe } from "vitest";
+import { runTranslationTest } from "./test-cases/shared.mjs";
+
+/**
+ * This file tests the WASM bindings for pivot translation requests
+ * that contain only plain text without HTML tags.
+ */
+
+const testCases = [
+  {
+    sourceLanguage: "es",
+    targetLanguage: "fr",
+    sourceText: "El perro azul.",
+    expectedText: "Le chien bleu.",
+    isHTML: true,
+  },
+  {
+    sourceLanguage: "fr",
+    targetLanguage: "es",
+    sourceText: "Le chien bleu.",
+    expectedText: "El perro azul.",
+    isHTML: true,
+  },
+];
+
+describe("Plain-Text Pivot Translations", () => {
+  testCases.forEach(runTranslationTest);
+});

inference/wasm/tests/vitest.config.mjs

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+import { defineConfig } from "vitest/config";
+
+export default defineConfig({
+  test: {
+    reporters: ["default"],
+  },
+});