diff --git a/package-lock.json b/package-lock.json
index f72380fd..bdc77ead 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -27,6 +27,7 @@
         "eslint-plugin-tsdoc": "^0.5.2",
         "glob": "^11.0.3",
         "http-server": "^14.1.1",
+        "jsdom": "^27.0.1",
         "lit": "^3.3.1",
         "openai": "^6.7.0",
         "prettier": "^3.6.2",
@@ -36,12 +37,48 @@
         "troika-types": "^0.0.6",
         "tslib": "^2.8.1",
         "typescript": "^5.9.2",
-        "typescript-eslint": "^8.43.0"
+        "typescript-eslint": "^8.43.0",
+        "vitest": "^3.2.4"
       },
       "peerDependencies": {
         "three": "^0.182.0"
       }
     },
+    "node_modules/@asamuzakjp/css-color": {
+      "version": "4.1.2",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/css-color/-/css-color-4.1.2.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@csstools/css-calc": "^3.0.0",
+        "@csstools/css-color-parser": "^4.0.1",
+        "@csstools/css-parser-algorithms": "^4.0.0",
+        "@csstools/css-tokenizer": "^4.0.0",
+        "lru-cache": "^11.2.5"
+      }
+    },
+    "node_modules/@asamuzakjp/dom-selector": {
+      "version": "6.8.1",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/dom-selector/-/dom-selector-6.8.1.tgz",
+      "integrity": "sha512-MvRz1nCqW0fsy8Qz4dnLIvhOlMzqDVBabZx6lH+YywFDdjXhMY37SmpV1XFX3JzG5GWHn63j6HX6QPr3lZXHvQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@asamuzakjp/nwsapi": "^2.3.9",
+        "bidi-js": "^1.0.3",
+        "css-tree": "^3.1.0",
+        "is-potential-custom-element-name": "^1.0.1",
+        "lru-cache": "^11.2.6"
+      }
+    },
+    "node_modules/@asamuzakjp/nwsapi": {
+      "version": "2.3.9",
+      "resolved": "https://registry.npmjs.org/@asamuzakjp/nwsapi/-/nwsapi-2.3.9.tgz",
+      "integrity": "sha512-n8GuYSrI9bF7FFZ/SjhwevlHc8xaVlb/7HmHelnc/PZXBD2ZR49NnN9sMMuDdEGPeeRQ5d0hqlSlEpgCX3Wl0Q==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/@babel/code-frame": {
       "version": "7.29.0",
       "resolved": "https://registry.npmjs.org/@babel/code-frame/-/code-frame-7.29.0.tgz",
@@ -66,23 +103,605 @@
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       "optional": true,
       "engines": {
-        "node": ">=6.9.0"
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/@csstools/color-helpers": {
+      "version": "6.0.2",
+      "resolved": "https://registry.npmjs.org/@csstools/color-helpers/-/color-helpers-6.0.2.tgz",
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+      "dev": true,
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT-0",
+      "engines": {
+        "node": ">=20.19.0"
+      }
+    },
+    "node_modules/@csstools/css-calc": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npmjs.org/@csstools/css-calc/-/css-calc-3.1.1.tgz",
+      "integrity": "sha512-HJ26Z/vmsZQqs/o3a6bgKslXGFAungXGbinULZO3eMsOyNJHeBBZfup5FiZInOghgoM4Hwnmw+OgbJCNg1wwUQ==",
+      "dev": true,
+      "funding": [
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+          "type": "github",
+          "url": "https://github.com/sponsors/csstools"
+        },
+        {
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+          "url": "https://opencollective.com/csstools"
+        }
+      ],
+      "license": "MIT",
+      "engines": {
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+      },
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+        "@csstools/css-tokenizer": "^4.0.0"
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+    "node_modules/@csstools/css-color-parser": {
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+      "resolved": "https://registry.npmjs.org/@csstools/css-color-parser/-/css-color-parser-4.0.2.tgz",
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+    },
     "node_modules/terser": {
       "version": "5.44.0",
       "resolved": "https://registry.npmjs.org/terser/-/terser-5.44.0.tgz",
@@ -3721,6 +4930,20 @@
       "license": "MIT",
       "peer": true
     },
+    "node_modules/tinybench": {
+      "version": "2.9.0",
+      "resolved": "https://registry.npmjs.org/tinybench/-/tinybench-2.9.0.tgz",
+      "integrity": "sha512-0+DUvqWMValLmha6lr4kD8iAMK1HzV0/aKnCtWb9v9641TnP/MFb7Pc2bxoxQjTXAErryXVgUOfv2YqNllqGeg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/tinyexec": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/tinyexec/-/tinyexec-0.3.2.tgz",
+      "integrity": "sha512-KQQR9yN7R5+OSwaK0XQoj22pwHoTlgYqmUscPYoknOoWCWfj/5/ABTMRi69FrKU5ffPVh5QcFikpWJI/P1ocHA==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/tinyglobby": {
       "version": "0.2.15",
       "resolved": "https://registry.npmjs.org/tinyglobby/-/tinyglobby-0.2.15.tgz",
@@ -3738,6 +4961,82 @@
         "url": "https://github.com/sponsors/SuperchupuDev"
       }
     },
+    "node_modules/tinypool": {
+      "version": "1.1.1",
+      "resolved": "https://registry.npmjs.org/tinypool/-/tinypool-1.1.1.tgz",
+      "integrity": "sha512-Zba82s87IFq9A9XmjiX5uZA/ARWDrB03OHlq+Vw1fSdt0I+4/Kutwy8BP4Y/y/aORMo61FQ0vIb5j44vSo5Pkg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": "^18.0.0 || >=20.0.0"
+      }
+    },
+    "node_modules/tinyrainbow": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/tinyrainbow/-/tinyrainbow-2.0.0.tgz",
+      "integrity": "sha512-op4nsTR47R6p0vMUUoYl/a+ljLFVtlfaXkLQmqfLR1qHma1h/ysYk4hEXZ880bf2CYgTskvTa/e196Vd5dDQXw==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
+    "node_modules/tinyspy": {
+      "version": "4.0.4",
+      "resolved": "https://registry.npmjs.org/tinyspy/-/tinyspy-4.0.4.tgz",
+      "integrity": "sha512-azl+t0z7pw/z958Gy9svOTuzqIk6xq+NSheJzn5MMWtWTFywIacg2wUlzKFGtt3cthx0r2SxMK0yzJOR0IES7Q==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
+    "node_modules/tldts": {
+      "version": "7.0.27",
+      "resolved": "https://registry.npmjs.org/tldts/-/tldts-7.0.27.tgz",
+      "integrity": "sha512-I4FZcVFcqCRuT0ph6dCDpPuO4Xgzvh+spkcTr1gK7peIvxWauoloVO0vuy1FQnijT63ss6AsHB6+OIM4aXHbPg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "tldts-core": "^7.0.27"
+      },
+      "bin": {
+        "tldts": "bin/cli.js"
+      }
+    },
+    "node_modules/tldts-core": {
+      "version": "7.0.27",
+      "resolved": "https://registry.npmjs.org/tldts-core/-/tldts-core-7.0.27.tgz",
+      "integrity": "sha512-YQ7uPjgWUibIK6DW5lrKujGwUKhLevU4hcGbP5O6TcIUb+oTjJYJVWPS4nZsIHrEEEG6myk/oqAJUEQmpZrHsg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/tough-cookie": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/tough-cookie/-/tough-cookie-6.0.1.tgz",
+      "integrity": "sha512-LktZQb3IeoUWB9lqR5EWTHgW/VTITCXg4D21M+lvybRVdylLrRMnqaIONLVb5mav8vM19m44HIcGq4qASeu2Qw==",
+      "dev": true,
+      "license": "BSD-3-Clause",
+      "dependencies": {
+        "tldts": "^7.0.5"
+      },
+      "engines": {
+        "node": ">=16"
+      }
+    },
+    "node_modules/tr46": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-6.0.0.tgz",
+      "integrity": "sha512-bLVMLPtstlZ4iMQHpFHTR7GAGj2jxi8Dg0s2h2MafAE4uSWF98FC/3MomU51iQAMf8/qDUbKWf5GxuvvVcXEhw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "punycode": "^2.3.1"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
     "node_modules/tree-kill": {
       "version": "1.2.2",
       "resolved": "https://registry.npmjs.org/tree-kill/-/tree-kill-1.2.2.tgz",
@@ -3895,6 +5194,190 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/vite": {
+      "version": "7.3.1",
+      "resolved": "https://registry.npmjs.org/vite/-/vite-7.3.1.tgz",
+      "integrity": "sha512-w+N7Hifpc3gRjZ63vYBXA56dvvRlNWRczTdmCBBa+CotUzAPf5b7YMdMR/8CQoeYE5LX3W4wj6RYTgonm1b9DA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "esbuild": "^0.27.0",
+        "fdir": "^6.5.0",
+        "picomatch": "^4.0.3",
+        "postcss": "^8.5.6",
+        "rollup": "^4.43.0",
+        "tinyglobby": "^0.2.15"
+      },
+      "bin": {
+        "vite": "bin/vite.js"
+      },
+      "engines": {
+        "node": "^20.19.0 || >=22.12.0"
+      },
+      "funding": {
+        "url": "https://github.com/vitejs/vite?sponsor=1"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.3"
+      },
+      "peerDependencies": {
+        "@types/node": "^20.19.0 || >=22.12.0",
+        "jiti": ">=1.21.0",
+        "less": "^4.0.0",
+        "lightningcss": "^1.21.0",
+        "sass": "^1.70.0",
+        "sass-embedded": "^1.70.0",
+        "stylus": ">=0.54.8",
+        "sugarss": "^5.0.0",
+        "terser": "^5.16.0",
+        "tsx": "^4.8.1",
+        "yaml": "^2.4.2"
+      },
+      "peerDependenciesMeta": {
+        "@types/node": {
+          "optional": true
+        },
+        "jiti": {
+          "optional": true
+        },
+        "less": {
+          "optional": true
+        },
+        "lightningcss": {
+          "optional": true
+        },
+        "sass": {
+          "optional": true
+        },
+        "sass-embedded": {
+          "optional": true
+        },
+        "stylus": {
+          "optional": true
+        },
+        "sugarss": {
+          "optional": true
+        },
+        "terser": {
+          "optional": true
+        },
+        "tsx": {
+          "optional": true
+        },
+        "yaml": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/vite-node": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/vite-node/-/vite-node-3.2.4.tgz",
+      "integrity": "sha512-EbKSKh+bh1E1IFxeO0pg1n4dvoOTt0UDiXMd/qn++r98+jPO1xtJilvXldeuQ8giIB5IkpjCgMleHMNEsGH6pg==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "cac": "^6.7.14",
+        "debug": "^4.4.1",
+        "es-module-lexer": "^1.7.0",
+        "pathe": "^2.0.3",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0"
+      },
+      "bin": {
+        "vite-node": "vite-node.mjs"
+      },
+      "engines": {
+        "node": "^18.0.0 || ^20.0.0 || >=22.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
+    },
+    "node_modules/vitest": {
+      "version": "3.2.4",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-3.2.4.tgz",
+      "integrity": "sha512-LUCP5ev3GURDysTWiP47wRRUpLKMOfPh+yKTx3kVIEiu5KOMeqzpnYNsKyOoVrULivR8tLcks4+lga33Whn90A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/chai": "^5.2.2",
+        "@vitest/expect": "3.2.4",
+        "@vitest/mocker": "3.2.4",
+        "@vitest/pretty-format": "^3.2.4",
+        "@vitest/runner": "3.2.4",
+        "@vitest/snapshot": "3.2.4",
+        "@vitest/spy": "3.2.4",
+        "@vitest/utils": "3.2.4",
+        "chai": "^5.2.0",
+        "debug": "^4.4.1",
+        "expect-type": "^1.2.1",
+        "magic-string": "^0.30.17",
+        "pathe": "^2.0.3",
+        "picomatch": "^4.0.2",
+        "std-env": "^3.9.0",
+        "tinybench": "^2.9.0",
+        "tinyexec": "^0.3.2",
+        "tinyglobby": "^0.2.14",
+        "tinypool": "^1.1.1",
+        "tinyrainbow": "^2.0.0",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0",
+        "vite-node": "3.2.4",
+        "why-is-node-running": "^2.3.0"
+      },
+      "bin": {
+        "vitest": "vitest.mjs"
+      },
+      "engines": {
+        "node": "^18.0.0 || ^20.0.0 || >=22.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      },
+      "peerDependencies": {
+        "@edge-runtime/vm": "*",
+        "@types/debug": "^4.1.12",
+        "@types/node": "^18.0.0 || ^20.0.0 || >=22.0.0",
+        "@vitest/browser": "3.2.4",
+        "@vitest/ui": "3.2.4",
+        "happy-dom": "*",
+        "jsdom": "*"
+      },
+      "peerDependenciesMeta": {
+        "@edge-runtime/vm": {
+          "optional": true
+        },
+        "@types/debug": {
+          "optional": true
+        },
+        "@types/node": {
+          "optional": true
+        },
+        "@vitest/browser": {
+          "optional": true
+        },
+        "@vitest/ui": {
+          "optional": true
+        },
+        "happy-dom": {
+          "optional": true
+        },
+        "jsdom": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/w3c-xmlserializer": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/w3c-xmlserializer/-/w3c-xmlserializer-5.0.0.tgz",
+      "integrity": "sha512-o8qghlI8NZHU1lLPrpi2+Uq7abh4GGPpYANlalzWxyWteJOCsr/P+oPBA49TOLu5FTZO4d3F9MnWJfiMo4BkmA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "xml-name-validator": "^5.0.0"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
     "node_modules/web-streams-polyfill": {
       "version": "3.3.3",
       "resolved": "https://registry.npmjs.org/web-streams-polyfill/-/web-streams-polyfill-3.3.3.tgz",
@@ -3912,6 +5395,16 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/webidl-conversions": {
+      "version": "8.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-8.0.1.tgz",
+      "integrity": "sha512-BMhLD/Sw+GbJC21C/UgyaZX41nPt8bUTg+jWyDeg7e7YN4xOM05YPSIXceACnXVtqyEw/LMClUQMtMZ+PGGpqQ==",
+      "dev": true,
+      "license": "BSD-2-Clause",
+      "engines": {
+        "node": ">=20"
+      }
+    },
     "node_modules/whatwg-encoding": {
       "version": "2.0.0",
       "resolved": "https://registry.npmjs.org/whatwg-encoding/-/whatwg-encoding-2.0.0.tgz",
@@ -3926,6 +5419,30 @@
         "node": ">=12"
       }
     },
+    "node_modules/whatwg-mimetype": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-mimetype/-/whatwg-mimetype-4.0.0.tgz",
+      "integrity": "sha512-QaKxh0eNIi2mE9p2vEdzfagOKHCcj1pJ56EEHGQOVxp8r9/iszLUUV7v89x9O1p/T+NlTM5W7jW6+cz4Fq1YVg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/whatwg-url": {
+      "version": "15.1.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-15.1.0.tgz",
+      "integrity": "sha512-2ytDk0kiEj/yu90JOAp44PVPUkO9+jVhyf+SybKlRHSDlvOOZhdPIrr7xTH64l4WixO2cP+wQIcgujkGBPPz6g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "tr46": "^6.0.0",
+        "webidl-conversions": "^8.0.0"
+      },
+      "engines": {
+        "node": ">=20"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
@@ -3942,6 +5459,23 @@
         "node": ">= 8"
       }
     },
+    "node_modules/why-is-node-running": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/why-is-node-running/-/why-is-node-running-2.3.0.tgz",
+      "integrity": "sha512-hUrmaWBdVDcxvYqnyh09zunKzROWjbZTiNy8dBEjkS7ehEDQibXJ7XvlmtbwuTclUiIyN+CyXQD4Vmko8fNm8w==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "siginfo": "^2.0.0",
+        "stackback": "0.0.2"
+      },
+      "bin": {
+        "why-is-node-running": "cli.js"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/word-wrap": {
       "version": "1.2.5",
       "resolved": "https://registry.npmjs.org/word-wrap/-/word-wrap-1.2.5.tgz",
@@ -3974,6 +5508,23 @@
         }
       }
     },
+    "node_modules/xml-name-validator": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/xml-name-validator/-/xml-name-validator-5.0.0.tgz",
+      "integrity": "sha512-EvGK8EJ3DhaHfbRlETOWAS5pO9MZITeauHKJyb8wyajUfQUenkIg2MvLDTZ4T/TgIcm3HU0TFBgWWboAZ30UHg==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/xmlchars": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/xmlchars/-/xmlchars-2.2.0.tgz",
+      "integrity": "sha512-JZnDKK8B0RCDw84FNdDAIpZK+JuJw+s7Lz8nksI7SIuU3UXJJslUthsi+uWBUYOwPFwW7W7PRLRfUKpxjtjFCw==",
+      "dev": true,
+      "license": "MIT"
+    },
     "node_modules/y18n": {
       "version": "5.0.8",
       "resolved": "https://registry.npmjs.org/y18n/-/y18n-5.0.8.tgz",
diff --git a/package.json b/package.json
index 7cfb1358..40a8f441 100644
--- a/package.json
+++ b/package.json
@@ -15,7 +15,9 @@
     "lint": "eslint src",
     "format": "npm run format:fix",
     "format:check": "prettier \"**/*.{cjs,html,js,json,md,mdx,ts,css}\" --check",
-    "format:fix": "prettier \"**/*.{cjs,html,js,json,md,mdx,ts,css}\" --write"
+    "format:fix": "prettier \"**/*.{cjs,html,js,json,md,mdx,ts,css}\" --write",
+    "test": "vitest run",
+    "test:watch": "vitest"
   },
   "files": [
     "build"
@@ -50,6 +52,7 @@
     "eslint-plugin-tsdoc": "^0.5.2",
     "glob": "^11.0.3",
     "http-server": "^14.1.1",
+    "jsdom": "^27.0.1",
     "lit": "^3.3.1",
     "openai": "^6.7.0",
     "prettier": "^3.6.2",
@@ -59,7 +62,8 @@
     "troika-types": "^0.0.6",
     "tslib": "^2.8.1",
     "typescript": "^5.9.2",
-    "typescript-eslint": "^8.43.0"
+    "typescript-eslint": "^8.43.0",
+    "vitest": "^3.2.4"
   },
   "peerDependencies": {
     "three": "^0.182.0"
diff --git a/src/ui/components/TextView.test.ts b/src/ui/components/TextView.test.ts
new file mode 100644
index 00000000..bd182b2c
--- /dev/null
+++ b/src/ui/components/TextView.test.ts
@@ -0,0 +1,96 @@
+import {describe, it, expect, vi, beforeEach} from 'vitest';
+
+// Mock troika-three-text so it fails to import, forcing canvas fallback.
+vi.mock('troika-three-text', () => {
+  throw new Error('mock: troika not available');
+});
+
+import {TextView} from './TextView';
+
+/**
+ * Creates a minimal mock CanvasRenderingContext2D that records property
+ * assignments and fillText calls so we can assert the rendering behaviour.
+ */
+function createMockContext() {
+  const ctx = {
+    clearRect: vi.fn(),
+    fillText: vi.fn(),
+    font: '',
+    fillStyle: '',
+    textAlign: '' as CanvasTextAlign,
+    textBaseline: '' as CanvasTextBaseline,
+  };
+  return ctx as unknown as CanvasRenderingContext2D;
+}
+
+describe('TextView canvas-based text', () => {
+  beforeEach(() => {
+    vi.spyOn(console, 'warn').mockImplementation(() => {});
+    vi.spyOn(console, 'debug').mockImplementation(() => {});
+  });
+
+  /**
+   * Helper: creates a TextView with canvas fallback, injects a mock context,
+   * and triggers a text update so the rendering path runs.
+   */
+  function createCanvasTextView(opts: Record<string, unknown> = {}): {
+    view: TextView;
+    ctx: ReturnType<typeof createMockContext>;
+  } {
+    const view = new TextView({useSDFText: false, text: 'test', ...opts});
+
+    // Manually set up the canvas + context like createTextHTML does,
+    // but with our mock context so we can inspect it.
+    const canvas = document.createElement('canvas');
+    const ctx = createMockContext();
+    vi.spyOn(canvas, 'getContext').mockReturnValue(
+      ctx as unknown as RenderingContext
+    );
+
+    // Assign internals that createTextHTML would set.
+    view.canvas = canvas;
+    view.ctx = ctx;
+
+    // Trigger the rendering path.
+    view.text = (opts.text as string) ?? 'test';
+
+    return {view, ctx};
+  }
+
+  it('uses configured textAlign=left', () => {
+    const {ctx} = createCanvasTextView({textAlign: 'left'});
+    expect(ctx.textAlign).toBe('left');
+    expect(ctx.fillText).toHaveBeenCalledWith('test', 0, expect.any(Number));
+  });
+
+  it('uses configured textAlign=right', () => {
+    const {ctx} = createCanvasTextView({textAlign: 'right'});
+    expect(ctx.textAlign).toBe('right');
+  });
+
+  it('defaults textAlign to center', () => {
+    const {ctx} = createCanvasTextView();
+    expect(ctx.textAlign).toBe('center');
+  });
+
+  it('maps anchorY=top to textBaseline top and drawY=0', () => {
+    const {ctx} = createCanvasTextView({anchorY: 'top'});
+    expect(ctx.textBaseline).toBe('top');
+    expect(ctx.fillText).toHaveBeenCalledWith('test', expect.any(Number), 0);
+  });
+
+  it('maps anchorY=bottom to textBaseline bottom', () => {
+    const {ctx} = createCanvasTextView({anchorY: 'bottom'});
+    expect(ctx.textBaseline).toBe('bottom');
+  });
+
+  it('defaults anchorY=middle to textBaseline middle', () => {
+    const {ctx} = createCanvasTextView();
+    expect(ctx.textBaseline).toBe('middle');
+  });
+
+  it('maps anchorY=top-baseline to textBaseline top', () => {
+    const {ctx} = createCanvasTextView({anchorY: 'top-baseline'});
+    expect(ctx.textBaseline).toBe('top');
+  });
+});
diff --git a/src/ui/components/TextView.ts b/src/ui/components/TextView.ts
index 6237a6ff..c30620a9 100644
--- a/src/ui/components/TextView.ts
+++ b/src/ui/components/TextView.ts
@@ -302,10 +302,39 @@ export class TextView extends View<TextViewEventMap> {
         : (this.fontSize ?? 0.06);
     ctx.font = `${fontSize * resolution}px ${this.font}`;
     ctx.fillStyle = `#${getColorHex(this.fontColor).toString(16).padStart(6, '0')}`;
-    ctx.textAlign = 'center';
-    ctx.textBaseline = 'middle';
+
+    // Use the configured textAlign and compute anchor positions accordingly.
+    const align = this.textAlign as CanvasTextAlign;
+    ctx.textAlign = align;
+    let drawX: number;
+    switch (align) {
+      case 'left':
+        drawX = 0;
+        break;
+      case 'right':
+        drawX = canvas!.width;
+        break;
+      default:
+        drawX = canvas!.width / 2;
+        break;
+    }
+
+    // Map anchorY to canvas textBaseline and Y position.
+    let baseline: CanvasTextBaseline = 'middle';
+    let drawY: number = canvas!.height / 2;
+    if (typeof this.anchorY === 'string') {
+      if (this.anchorY.startsWith('top')) {
+        baseline = 'top';
+        drawY = 0;
+      } else if (this.anchorY.startsWith('bottom')) {
+        baseline = 'bottom';
+        drawY = canvas!.height;
+      }
+    }
+    ctx.textBaseline = baseline;
+
     // TODO: add line-break for canvas-based text.
-    ctx.fillText(this.text, canvas!.width / 2, canvas!.height / 2);
+    ctx.fillText(this.text, drawX, drawY);
 
     if (this.textObj?.material.map) {
       this.textObj.material.map.needsUpdate = true;
diff --git a/tsconfig.json b/tsconfig.json
index 39377677..ad433abb 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -11,5 +11,5 @@
     "composite": true
   },
   "include": ["src/**/*.ts"],
-  "exclude": ["src/addons/**/*", "src/addons/**/cli/*"]
+  "exclude": ["src/addons/**/*", "src/addons/**/cli/*", "src/**/*.test.ts"]
 }
diff --git a/vitest.config.ts b/vitest.config.ts
new file mode 100644
index 00000000..2d2417cb
--- /dev/null
+++ b/vitest.config.ts
@@ -0,0 +1,8 @@
+import {defineConfig} from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    include: ['src/**/*.test.ts'],
+    environment: 'jsdom',
+  },
+});