adding tests for languageUtils

Author: barrymun

tests/languageUtils.test.ts

@@ -0,0 +1,53 @@
+import { describe, it, expect } from "vitest";
+
+import { defaultSlugifiedSubLanguageName } from "../src/utils/consts";
+import {
+  getLanguageDisplayName,
+  getLanguageDisplayLogo,
+  getLanguageFileName,
+} from "../src/utils/languageUtils";
+
+describe(getLanguageDisplayName.name, () => {
+  it("should return the upper cased subLanguage if it is not the default", () => {
+    const result = getLanguageDisplayName("JAVASCRIPT", "React");
+    expect(result).toBe("REACT");
+  });
+
+  it("should return the language name if subLanguage is the default", () => {
+    const result = getLanguageDisplayName(
+      "JAVASCRIPT",
+      defaultSlugifiedSubLanguageName
+    );
+    expect(result).toBe("JAVASCRIPT");
+  });
+});
+
+describe(getLanguageDisplayLogo.name, () => {
+  it("should return a concatenation of the language and subLanguage if subLanguage is not the default", () => {
+    const result = getLanguageDisplayLogo("JAVASCRIPT", "React");
+    expect(result).toBe("/icons/javascript--react.svg");
+  });
+
+  it("should return the language name only if subLanguage is the default", () => {
+    const result = getLanguageDisplayLogo(
+      "JAVASCRIPT",
+      defaultSlugifiedSubLanguageName
+    );
+    expect(result).toBe("/icons/javascript.svg");
+  });
+});
+
+describe(getLanguageFileName.name, () => {
+  it("should return a concatenation of the language and subLanguage if subLanguage is not the default", () => {
+    const result = getLanguageFileName("JAVASCRIPT", "React");
+    expect(result).toBe("javascript--react.json");
+  });
+
+  it("should return the language name only if subLanguage is the default", () => {
+    const result = getLanguageFileName(
+      "JAVASCRIPT",
+      defaultSlugifiedSubLanguageName
+    );
+    expect(result).toBe("javascript.json");
+  });
+});