diff --git a/package-lock.json b/package-lock.json
index 4761a31..99e0995 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mapdesigntoolrisk",
-  "version": "1.0.81",
+  "version": "1.1.2",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "mapdesigntoolrisk",
-      "version": "1.0.81",
+      "version": "1.1.2",
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@@ -36,7 +36,8 @@
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-        "vite": "^6.3.5"
+        "vite": "^6.3.5",
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@@ -1849,6 +1850,23 @@
         "@babel/types": "^7.20.7"
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+      "dev": true,
+      "license": "MIT",
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@@ -2167,6 +2185,120 @@
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+    "node_modules/@vitest/mocker": {
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+      "resolved": "https://registry.npmjs.org/@vitest/mocker/-/mocker-3.2.2.tgz",
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+        "estree-walker": "^3.0.3",
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+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0"
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+    "node_modules/@vitest/snapshot": {
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+      "resolved": "https://registry.npmjs.org/@vitest/snapshot/-/snapshot-3.2.2.tgz",
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+      "resolved": "https://registry.npmjs.org/@vitest/spy/-/spy-3.2.2.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
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+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
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+    "node_modules/@vitest/utils": {
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+      "resolved": "https://registry.npmjs.org/@vitest/utils/-/utils-3.2.2.tgz",
+      "integrity": "sha512-qJYMllrWpF/OYfWHP32T31QCaLa3BAzT/n/8mNGhPdVcjY+JYazQFO1nsJvXU12Kp1xMpNY4AGuljPTNjQve6A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@vitest/pretty-format": "3.2.2",
+        "loupe": "^3.1.3",
+        "tinyrainbow": "^2.0.0"
+      },
+      "funding": {
+        "url": "https://opencollective.com/vitest"
+      }
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       "resolved": "https://registry.npmjs.org/abab/-/abab-2.0.6.tgz",
@@ -2344,6 +2476,16 @@
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+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/assertion-error/-/assertion-error-2.0.1.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      }
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@@ -2468,6 +2610,16 @@
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+    "node_modules/cac": {
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+      "resolved": "https://registry.npmjs.org/cac/-/cac-6.7.14.tgz",
+      "integrity": "sha512-b6Ilus+c3RrdDk+JhLKUAQfzzgLEPy6wcXqS7f/xe1EETvsDP6GORG7SFuOs6cID5YkqchW/LXZbX5bc8j7ZcQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/call-bind-apply-helpers": {
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@@ -2545,6 +2697,23 @@
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+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/chai/-/chai-5.2.0.tgz",
+      "integrity": "sha512-mCuXncKXk5iCLhfhwTc0izo0gtEmpz5CtG2y8GiOINBlMVS6v8TMRc5TaLWKS6692m9+dVVfzgeVxR5UxWHTYw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "assertion-error": "^2.0.1",
+        "check-error": "^2.1.1",
+        "deep-eql": "^5.0.1",
+        "loupe": "^3.1.0",
+        "pathval": "^2.0.0"
+      },
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@@ -2562,6 +2731,16 @@
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+    "node_modules/check-error": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/check-error/-/check-error-2.1.1.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">= 16"
+      }
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       "resolved": "https://registry.npmjs.org/chownr/-/chownr-2.0.0.tgz",
@@ -2852,6 +3031,16 @@
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+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/deep-eql/-/deep-eql-5.0.2.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/deep-is": {
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       "resolved": "https://registry.npmjs.org/deep-is/-/deep-is-0.1.4.tgz",
@@ -3028,6 +3217,13 @@
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       }
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+    "node_modules/es-module-lexer": {
+      "version": "1.7.0",
+      "resolved": "https://registry.npmjs.org/es-module-lexer/-/es-module-lexer-1.7.0.tgz",
+      "integrity": "sha512-jEQoCwk8hyb2AZziIOLhDqpm5+2ww5uIE6lkO/6jcOCusfk6LhMHpXXfBLXTZ7Ydyt0j4VoUQv6uGNYbdW+kBA==",
+      "dev": true,
+      "license": "MIT"
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@@ -3153,8 +3349,10 @@
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+      "dev": true,
       "license": "BSD-3-Clause",
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+      "peer": true,
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@@ -3343,6 +3541,16 @@
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+      "version": "3.0.3",
+      "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-3.0.3.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
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@@ -3386,6 +3594,16 @@
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+      "resolved": "https://registry.npmjs.org/expect-type/-/expect-type-1.2.1.tgz",
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+      "dev": true,
+      "license": "Apache-2.0",
+      "engines": {
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@@ -4523,6 +4741,13 @@
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+      "resolved": "https://registry.npmjs.org/loupe/-/loupe-3.1.3.tgz",
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+      "license": "MIT"
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@@ -4533,6 +4758,16 @@
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+      "resolved": "https://registry.npmjs.org/magic-string/-/magic-string-0.30.17.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
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@@ -5064,6 +5299,23 @@
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+      "dev": true,
+      "license": "MIT"
+    },
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+      "resolved": "https://registry.npmjs.org/pathval/-/pathval-2.0.0.tgz",
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+      "dev": true,
+      "license": "MIT",
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@@ -5828,6 +6080,13 @@
         "url": "https://github.com/sponsors/ljharb"
       }
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+      "resolved": "https://registry.npmjs.org/siginfo/-/siginfo-2.0.0.tgz",
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@@ -5897,6 +6156,13 @@
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@@ -5907,6 +6173,13 @@
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@@ -6044,10 +6317,24 @@
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@@ -6089,6 +6376,36 @@
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+      "license": "MIT",
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+    },
+    "node_modules/tinyspy": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/tinyspy/-/tinyspy-4.0.3.tgz",
+      "integrity": "sha512-t2T/WLB2WRgZ9EpE4jgPJ9w+i66UZfDc8wHh0xrwiRNN+UwH98GIJkTeZqX9rg0i0ptwzqW+uYeIF0T4F8LR7A==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.0.0"
+      }
+    },
     "node_modules/to-regex-range": {
       "version": "5.0.1",
       "resolved": "https://registry.npmjs.org/to-regex-range/-/to-regex-range-5.0.1.tgz",
@@ -6429,6 +6746,29 @@
         }
       }
     },
+    "node_modules/vite-node": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/vite-node/-/vite-node-3.2.2.tgz",
+      "integrity": "sha512-Xj/jovjZvDXOq2FgLXu8NsY4uHUMWtzVmMC2LkCu9HWdr9Qu1Is5sanX3Z4jOFKdohfaWDnEJWp9pRP0vVpAcA==",
+      "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/vite/node_modules/fdir": {
       "version": "6.4.4",
       "resolved": "https://registry.npmjs.org/fdir/-/fdir-6.4.4.tgz",
@@ -6457,6 +6797,92 @@
         "url": "https://github.com/sponsors/jonschlinkert"
       }
     },
+    "node_modules/vitest": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/vitest/-/vitest-3.2.2.tgz",
+      "integrity": "sha512-fyNn/Rp016Bt5qvY0OQvIUCwW2vnaEBLxP42PmKbNIoasSYjML+8xyeADOPvBe+Xfl/ubIw4og7Lt9jflRsCNw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/chai": "^5.2.2",
+        "@vitest/expect": "3.2.2",
+        "@vitest/mocker": "3.2.2",
+        "@vitest/pretty-format": "^3.2.2",
+        "@vitest/runner": "3.2.2",
+        "@vitest/snapshot": "3.2.2",
+        "@vitest/spy": "3.2.2",
+        "@vitest/utils": "3.2.2",
+        "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": "^1.1.0",
+        "tinyrainbow": "^2.0.0",
+        "vite": "^5.0.0 || ^6.0.0 || ^7.0.0-0",
+        "vite-node": "3.2.2",
+        "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": "3.2.2",
+        "@vitest/ui": "3.2.2",
+        "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/vitest/node_modules/picomatch": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/picomatch/-/picomatch-4.0.2.tgz",
+      "integrity": "sha512-M7BAV6Rlcy5u+m6oPhAPFgJTzAioX/6B0DxyvDlo9l8+T3nLKbrczg2WLUyzd45L8RqfUMyGPzekbMvX2Ldkwg==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=12"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/jonschlinkert"
+      }
+    },
     "node_modules/w3c-xmlserializer": {
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/w3c-xmlserializer/-/w3c-xmlserializer-4.0.0.tgz",
@@ -6533,6 +6959,23 @@
         "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/wide-align": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.5.tgz",
diff --git a/package.json b/package.json
index 0950480..06b638a 100644
--- a/package.json
+++ b/package.json
@@ -1,13 +1,14 @@
 {
   "name": "mapdesigntoolrisk",
   "private": true,
-  "version": "1.0.81",
+  "version": "1.1.2",
   "description": "Fixed all drawing tools behavior",
   "type": "module",
   "scripts": {
     "dev": "vite",
     "build": "tsc -b && vite build",
     "lint": "eslint .",
+    "test": "vitest run",
     "preview": "vite preview",
     "predeploy": "npm run build",
     "deploy": "gh-pages -d dist"
@@ -41,6 +42,7 @@
     "globals": "^16.0.0",
     "typescript": "~5.8.3",
     "typescript-eslint": "^8.30.1",
-    "vite": "^6.3.5"
+    "vite": "^6.3.5",
+    "vitest": "^3.2.2"
   }
 }
diff --git a/src/components/Canvas/utils/__tests__/geometry.test.ts b/src/components/Canvas/utils/__tests__/geometry.test.ts
new file mode 100644
index 0000000..39c4826
--- /dev/null
+++ b/src/components/Canvas/utils/__tests__/geometry.test.ts
@@ -0,0 +1,37 @@
+import { describe, it, expect } from 'vitest';
+import { getPolygonBounds, rectsIntersect, getPolygonCentroid, getTerritoryCenter } from '../geometry';
+
+const squarePoints = [0, 0, 10, 0, 10, 10, 0, 10];
+
+describe('geometry utils', () => {
+  it('calculates polygon bounds', () => {
+    const bounds = getPolygonBounds(squarePoints);
+    expect(bounds).toEqual({ x: 0, y: 0, width: 10, height: 10 });
+  });
+
+  it('checks rectangle intersection', () => {
+    const a = { x: 0, y: 0, width: 10, height: 10 };
+    const b = { x: 5, y: 5, width: 10, height: 10 };
+    const c = { x: 20, y: 20, width: 5, height: 5 };
+    expect(rectsIntersect(a, b)).toBe(true);
+    expect(rectsIntersect(a, c)).toBe(false);
+  });
+
+  it('calculates polygon centroid', () => {
+    const centroid = getPolygonCentroid(squarePoints);
+    expect(centroid.x).toBeCloseTo(5);
+    expect(centroid.y).toBeCloseTo(5);
+  });
+
+  it('handles zero-area polygon centroid', () => {
+    const line = [0, 0, 1, 0, 2, 0];
+    const centroid = getPolygonCentroid(line);
+    expect(centroid).toEqual({ x: 0, y: 0 });
+  });
+
+  it('gets territory center for rect', () => {
+    const territory = { shape: { type: 'rect', x: 0, y: 0, width: 10, height: 20 } };
+    const center = getTerritoryCenter(territory);
+    expect(center).toEqual({ x: 5, y: 10 });
+  });
+});