feat(storage): implement geo field validation in BaseStorage.validateField

src/storage/base-storage.ts

@@ -183,10 +183,43 @@ export abstract class BaseStorage {
                 }
                 break;
 
-            case FieldType.GEO:
-                // TODO: Implement geo validation
-                // Geo fields should be in format "longitude,latitude"
+            case FieldType.GEO: {
+                if (typeof value !== 'string') {
+                    throw new SchemaValidationError(
+                        `Field '${fieldName}' should be a string in "longitude,latitude" format but got: ${typeof value}`
+                    );
+                }
+
+                const parts = value.trim().split(',');
+
+                if (parts.length !== 2) {
+                    throw new SchemaValidationError(
+                        `Field '${fieldName}' should be in "longitude,latitude" format but got: "${value}"`
+                    );
+                }
+
+                const longitude = parseFloat(parts[0].trim());
+                const latitude = parseFloat(parts[1].trim());
+
+                if (isNaN(longitude) || isNaN(latitude)) {
+                    throw new SchemaValidationError(
+                        `Field '${fieldName}' contains invalid coordinates. Both longitude and latitude must be valid numbers. Got: "${value}"`
+                    );
+                }
+
+                if (longitude < -180 || longitude > 180) {
+                    throw new SchemaValidationError(
+                        `Field '${fieldName}' longitude must be between -180 and 180, got: ${longitude}`
+                    );
+                }
+
+                if (latitude < -90 || latitude > 90) {
+                    throw new SchemaValidationError(
+                        `Field '${fieldName}' latitude must be between -90 and 90, got: ${latitude}`
+                    );
+                }
                 break;
+            }
         }
     }
 

tests/unit/storage/base-storage-geo.test.ts

@@ -0,0 +1,82 @@
+import { describe, it, expect } from 'vitest';
+import { IndexSchema, IndexInfo } from '../../../src/schema/schema.js';
+import { BaseStorage } from '../../../src/storage/base-storage.js';
+import { SchemaValidationError } from '../../../src/errors.js';
+
+// Test double — exposes protected validate() for unit testing
+class TestStorage extends BaseStorage {
+    public testValidate(doc: Record<string, unknown>) {
+        return this.validate(doc);
+    }
+    async write() {
+        return [];
+    }
+    async get() {
+        return [];
+    }
+}
+
+// Minimal schema with a geo field
+function makeGeoSchema() {
+    const index = new IndexInfo({ name: 'test-geo-index' });
+    const schema = new IndexSchema({ index });
+    schema.addField({ name: 'location', type: 'geo' });
+    return schema;
+}
+
+describe('BaseStorage geo field validation', () => {
+    describe('valid geo values', () => {
+        it('should accept "0,0"', () => {
+            const storage = new TestStorage(makeGeoSchema());
+            expect(() => storage.testValidate({ location: '0,0' })).not.toThrow();
+        });
+
+        it('should accept boundary values "-180,-90"', () => {
+            const storage = new TestStorage(makeGeoSchema());
+            expect(() => storage.testValidate({ location: '-180,-90' })).not.toThrow();
+        });
+
+        it('should accept boundary values "180,90"', () => {
+            const storage = new TestStorage(makeGeoSchema());
+            expect(() => storage.testValidate({ location: '180,90' })).not.toThrow();
+        });
+
+        it('should accept realistic coordinates', () => {
+            const storage = new TestStorage(makeGeoSchema());
+            expect(() => storage.testValidate({ location: '40.7128,-74.0060' })).not.toThrow();
+        });
+    });
+
+    describe('invalid geo values', () => {
+        it('should reject a non-string value', () => {
+            const storage = new TestStorage(makeGeoSchema());
+            expect(() => storage.testValidate({ location: 12345 })).toThrow(SchemaValidationError);
+        });
+
+        it('should reject a value with no comma', () => {
+            const storage = new TestStorage(makeGeoSchema());
+            expect(() => storage.testValidate({ location: '12345' })).toThrow(
+                SchemaValidationError
+            );
+        });
+
+        it('should reject non-numeric parts', () => {
+            const storage = new TestStorage(makeGeoSchema());
+            expect(() => storage.testValidate({ location: 'abc,def' })).toThrow(
+                SchemaValidationError
+            );
+        });
+
+        it('should reject longitude out of range', () => {
+            const storage = new TestStorage(makeGeoSchema());
+            expect(() => storage.testValidate({ location: '181,0' })).toThrow(
+                SchemaValidationError
+            );
+        });
+
+        it('should reject latitude out of range', () => {
+            const storage = new TestStorage(makeGeoSchema());
+            expect(() => storage.testValidate({ location: '0,91' })).toThrow(SchemaValidationError);
+        });
+    });
+});