🧪 [testing improvement] Add unit tests for themes module

packages/renderer/src/themes.test.ts

@@ -0,0 +1,63 @@
+import { describe, expect, test } from "bun:test";
+import {
+  getGlassFilterDefs,
+  getTheme,
+  githubDark,
+  glass,
+  isGlassTheme,
+} from "./themes";
+import type { ColorPalette, GlassTheme } from "./themes";
+
+describe("Themes", () => {
+  describe("isGlassTheme", () => {
+    test("should return true for the official glass theme", () => {
+      expect(isGlassTheme(glass)).toBe(true);
+    });
+
+    test("should return true for a custom glass theme object", () => {
+      const customGlass: GlassTheme = {
+        ...githubDark,
+        glass: {
+          blur: 10,
+          opacity: 0.5,
+          borderOpacity: 0.1,
+          gradientStart: "white",
+          gradientEnd: "black",
+        },
+      };
+      expect(isGlassTheme(customGlass)).toBe(true);
+    });
+
+    test("should return false for github-dark theme", () => {
+      expect(isGlassTheme(githubDark)).toBe(false);
+    });
+
+    test("should return false for a regular palette without glass property", () => {
+      const regular: ColorPalette = { ...githubDark };
+      expect(isGlassTheme(regular)).toBe(false);
+    });
+  });
+
+  describe("getTheme", () => {
+    test("should return the requested theme", () => {
+      expect(getTheme("glass")).toBe(glass);
+      expect(getTheme("github-dark")).toBe(githubDark);
+    });
+
+    test("should return github-dark as fallback for unknown themes", () => {
+      expect(getTheme("non-existent")).toBe(githubDark);
+    });
+  });
+
+  describe("getGlassFilterDefs", () => {
+    test("should return SVG string containing theme values", () => {
+      const defs = getGlassFilterDefs(glass);
+      expect(defs).toContain('id="glass-blur"');
+      expect(defs).toContain('id="glass-gradient"');
+      expect(defs).toContain('id="glass-glow"');
+      expect(defs).toContain(`stdDeviation="${glass.glass.blur}"`);
+      expect(defs).toContain(`stop-color="${glass.glass.gradientStart}"`);
+      expect(defs).toContain(`stop-color="${glass.glass.gradientEnd}"`);
+    });
+  });
+});