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2026-05-19 21:09:56 +08:00
commit f3e6b95be9
78 changed files with 10099 additions and 0 deletions
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+import { describe, it, expect } from 'vitest';
+import { calculateSpanWidth, validateSpan, calculateGutter } from '../grid';
+
+describe('grid utilities', () => {
+  describe('calculateSpanWidth', () => {
+    it('should calculate correct width percentage for 24-column grid', () => {
+      expect(calculateSpanWidth(6, 24)).toBe('25.000%');
+      expect(calculateSpanWidth(12, 24)).toBe('50.000%');
+      expect(calculateSpanWidth(24, 24)).toBe('100.000%');
+      expect(calculateSpanWidth(1, 24)).toBe('4.167%');
+    });
+
+    it('should calculate correct width percentage for 12-column grid', () => {
+      expect(calculateSpanWidth(6, 12)).toBe('50.000%');
+      expect(calculateSpanWidth(3, 12)).toBe('25.000%');
+      expect(calculateSpanWidth(12, 12)).toBe('100.000%');
+    });
+
+    it('should use 24 columns as default', () => {
+      expect(calculateSpanWidth(6)).toBe('25.000%');
+      expect(calculateSpanWidth(12)).toBe('50.000%');
+    });
+
+    it('should throw error for invalid span', () => {
+      expect(() => calculateSpanWidth(0, 24)).toThrow();
+      expect(() => calculateSpanWidth(25, 24)).toThrow();
+      expect(() => calculateSpanWidth(-1, 24)).toThrow();
+    });
+  });
+
+  describe('validateSpan', () => {
+    it('should return true for valid spans', () => {
+      expect(validateSpan(1, 24)).toBe(true);
+      expect(validateSpan(12, 24)).toBe(true);
+      expect(validateSpan(24, 24)).toBe(true);
+    });
+
+    it('should return false for invalid spans', () => {
+      expect(validateSpan(0, 24)).toBe(false);
+      expect(validateSpan(25, 24)).toBe(false);
+      expect(validateSpan(-1, 24)).toBe(false);
+      expect(validateSpan(1.5, 24)).toBe(false);
+    });
+  });
+
+  describe('calculateGutter', () => {
+    it('should calculate gutter width correctly', () => {
+      const gutter = calculateGutter(1440, 24, 0.05);
+      expect(gutter).toBeGreaterThan(0);
+      expect(gutter).toBeLessThan(100);
+    });
+
+    it('should throw error for invalid inputs', () => {
+      expect(() => calculateGutter(0, 24, 0.05)).toThrow();
+      expect(() => calculateGutter(1440, 0, 0.05)).toThrow();
+      expect(() => calculateGutter(1440, 24, -0.1)).toThrow();
+      expect(() => calculateGutter(1440, 24, 1.5)).toThrow();
+    });
+  });
+});