chore: fix tests (#44)

Author: sreya

bun.lock

@@ -5,8 +5,8 @@
       "name": "@cmux/ghostty-terminal",
       "devDependencies": {
         "@biomejs/biome": "^1.9.4",
+        "@happy-dom/global-registrator": "^15.11.0",
         "@types/bun": "^1.3.2",
-        "happy-dom": "^20.0.10",
         "prettier": "^3.6.2",
         "typescript": "^5.9.3",
         "vite": "^4.5.0",
@@ -85,6 +85,8 @@
 
     "@esbuild/win32-x64": ["@esbuild/win32-x64@0.18.20", "", { "os": "win32", "cpu": "x64" }, "sha512-kTdfRcSiDfQca/y9QIkng02avJ+NCaQvrMejlsB3RRv5sE9rRoeBPISaZpKxHELzRxZyLvNts1P27W3wV+8geQ=="],
 
+    "@happy-dom/global-registrator": ["@happy-dom/global-registrator@15.11.7", "", { "dependencies": { "happy-dom": "^15.11.7" } }, "sha512-mfOoUlIw8VBiJYPrl5RZfMzkXC/z7gbSpi2ecycrj/gRWLq2CMV+Q+0G+JPjeOmuNFgg0skEIzkVFzVYFP6URw=="],
+
     "@isaacs/balanced-match": ["@isaacs/balanced-match@4.0.1", "", {}, "sha512-yzMTt9lEb8Gv7zRioUilSglI0c0smZ9k5D65677DLWLtWJaXIS3CqcGyUFByYKlnUj6TkjLVs54fBl6+TiGQDQ=="],
 
     "@isaacs/brace-expansion": ["@isaacs/brace-expansion@5.0.0", "", { "dependencies": { "@isaacs/balanced-match": "^4.0.1" } }, "sha512-ZT55BDLV0yv0RBm2czMiZ+SqCGO7AvmOM3G/w2xhVPH+te0aKgFjmBvGlL1dH+ql2tgGO3MVrbb3jCKyvpgnxA=="],
@@ -121,8 +123,6 @@
 
     "@types/react": ["@types/react@19.2.2", "", { "dependencies": { "csstype": "^3.0.2" } }, "sha512-6mDvHUFSjyT2B2yeNx2nUgMxh9LtOWvkhIU3uePn2I2oyNymUAX1NIsdgviM4CH+JSrp2D2hsMvJOkxY+0wNRA=="],
 
-    "@types/whatwg-mimetype": ["@types/whatwg-mimetype@3.0.2", "", {}, "sha512-c2AKvDT8ToxLIOUlN51gTiHXflsfIFisS4pO7pDPoKouJCESkhZnEy623gwP9laCy5lnLDAw1vAzu2vM2YLOrA=="],
-
     "@volar/language-core": ["@volar/language-core@2.4.23", "", { "dependencies": { "@volar/source-map": "2.4.23" } }, "sha512-hEEd5ET/oSmBC6pi1j6NaNYRWoAiDhINbT8rmwtINugR39loROSlufGdYMF9TaKGfz+ViGs1Idi3mAhnuPcoGQ=="],
 
     "@volar/source-map": ["@volar/source-map@2.4.23", "", {}, "sha512-Z1Uc8IB57Lm6k7q6KIDu/p+JWtf3xsXJqAX/5r18hYOTpJyBn0KXUR8oTJ4WFYOcDzWC9n3IflGgHowx6U6z9Q=="],
@@ -187,7 +187,7 @@
 
     "graceful-fs": ["graceful-fs@4.2.11", "", {}, "sha512-RbJ5/jmFcNNCcDV5o9eTnBLJ/HszWV0P73bc+Ff4nS/rJj+YaS6IGyiOL0VoBYX+l1Wrl3k63h/KrH+nhJ0XvQ=="],
 
-    "happy-dom": ["happy-dom@20.0.10", "", { "dependencies": { "@types/node": "^20.0.0", "@types/whatwg-mimetype": "^3.0.2", "whatwg-mimetype": "^3.0.0" } }, "sha512-6umCCHcjQrhP5oXhrHQQvLB0bwb1UzHAHdsXy+FjtKoYjUhmNZsQL8NivwM1vDvNEChJabVrUYxUnp/ZdYmy2g=="],
+    "happy-dom": ["happy-dom@15.11.7", "", { "dependencies": { "entities": "^4.5.0", "webidl-conversions": "^7.0.0", "whatwg-mimetype": "^3.0.0" } }, "sha512-KyrFvnl+J9US63TEzwoiJOQzZBJY7KgBushJA8X61DMbNsH+2ONkDuLDnCnwUiPTF42tLoEmrPyoqbenVA5zrg=="],
 
     "has-flag": ["has-flag@4.0.0", "", {}, "sha512-EykJT/Q1KjTWctppgIAgfSO0tKVuZUjhgMr17kqTumMl6Afv3EISleU7qZUzoXDFTAHTDC4NOoG/ZxU3EvlMPQ=="],
 
@@ -283,6 +283,8 @@
 
     "vscode-uri": ["vscode-uri@3.1.0", "", {}, "sha512-/BpdSx+yCQGnCvecbyXdxHDkuk55/G3xwnC0GqY4gmQ3j+A+g8kzzgB4Nk/SINjqn6+waqw3EgbVF2QKExkRxQ=="],
 
+    "webidl-conversions": ["webidl-conversions@7.0.0", "", {}, "sha512-VwddBukDzu71offAQR975unBIGqfKZpM+8ZX6ySk8nYhVoo5CYaZyzt3YBvYtRtO+aoGlqxPg/B87NGVZ/fu6g=="],
+
     "whatwg-mimetype": ["whatwg-mimetype@3.0.0", "", {}, "sha512-nt+N2dzIutVRxARx1nghPKGv1xHikU7HKdfafKkLNLindmPU/ch3U31NOCGGA/dmPcmb1VlofO0vnKAcsm0o/Q=="],
 
     "yallist": ["yallist@4.0.0", "", {}, "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="],

bunfig.toml

@@ -0,0 +1,7 @@
+# Bun Configuration
+# https://bun.sh/docs/runtime/bunfig
+
+[test]
+# Preload Happy DOM before running tests to provide browser-like globals
+# (window, document, HTMLElement, etc.)
+preload = "./happydom.ts"

happydom.ts

@@ -0,0 +1,96 @@
+/**
+ * Happy DOM Setup for Tests
+ *
+ * This file is preloaded by Bun before running tests (configured in bunfig.toml).
+ * It registers Happy DOM's global objects (window, document, HTMLElement, etc.)
+ * so that tests requiring DOM APIs can run successfully.
+ *
+ * @see bunfig.toml - test.preload configuration
+ * @see https://bun.sh/docs/test/dom
+ */
+
+import { GlobalRegistrator } from '@happy-dom/global-registrator';
+
+// Register Happy DOM globals (window, document, etc.)
+GlobalRegistrator.register();
+
+// Mock Canvas 2D Context
+// Happy DOM doesn't provide canvas rendering APIs, so we mock them for testing.
+// This provides enough functionality for terminal tests to run without actual rendering.
+const originalGetContext = HTMLCanvasElement.prototype.getContext;
+HTMLCanvasElement.prototype.getContext = function (contextType: string, options?: any) {
+  if (contextType === '2d') {
+    // Return a minimal mock of CanvasRenderingContext2D
+    return {
+      canvas: this,
+      fillStyle: '#000000',
+      strokeStyle: '#000000',
+      font: '12px monospace',
+      textAlign: 'start',
+      textBaseline: 'alphabetic',
+      globalAlpha: 1,
+      globalCompositeOperation: 'source-over',
+      imageSmoothingEnabled: true,
+      lineWidth: 1,
+      lineCap: 'butt',
+      lineJoin: 'miter',
+      miterLimit: 10,
+      shadowBlur: 0,
+      shadowColor: 'rgba(0, 0, 0, 0)',
+      shadowOffsetX: 0,
+      shadowOffsetY: 0,
+
+      // Drawing methods (no-ops for tests)
+      fillRect: () => {},
+      strokeRect: () => {},
+      clearRect: () => {},
+      fillText: () => {},
+      strokeText: () => {},
+      measureText: (text: string) => ({ width: text.length * 8 }),
+      drawImage: () => {},
+      save: () => {},
+      restore: () => {},
+      scale: () => {},
+      rotate: () => {},
+      translate: () => {},
+      transform: () => {},
+      setTransform: () => {},
+      resetTransform: () => {},
+      createLinearGradient: () => ({
+        addColorStop: () => {},
+      }),
+      createRadialGradient: () => ({
+        addColorStop: () => {},
+      }),
+      createPattern: () => null,
+      beginPath: () => {},
+      closePath: () => {},
+      moveTo: () => {},
+      lineTo: () => {},
+      bezierCurveTo: () => {},
+      quadraticCurveTo: () => {},
+      arc: () => {},
+      arcTo: () => {},
+      ellipse: () => {},
+      rect: () => {},
+      fill: () => {},
+      stroke: () => {},
+      clip: () => {},
+      isPointInPath: () => false,
+      isPointInStroke: () => false,
+      getTransform: () => ({}),
+      getImageData: () => ({
+        data: new Uint8ClampedArray(0),
+        width: 0,
+        height: 0,
+      }),
+      putImageData: () => {},
+      createImageData: () => ({
+        data: new Uint8ClampedArray(0),
+        width: 0,
+        height: 0,
+      }),
+    } as any;
+  }
+  return originalGetContext.call(this, contextType, options);
+};