|
| 1 | +import { |
| 2 | + calculateCloudTicks, |
| 3 | + calculateCloudYOffsetsUtil, |
| 4 | + CLOUD_HEIGHT_PADDING, |
| 5 | + createCloudScale, |
| 6 | +} from './drawFeatsCloud.ts' |
| 7 | + |
| 8 | +import type { ComputedChain } from './drawFeatsCommon.ts' |
| 9 | + |
| 10 | +// Helper to create mock computed chains |
| 11 | +function createMockChain( |
| 12 | + id: string, |
| 13 | + distance: number, |
| 14 | + overrides?: Partial<ComputedChain>, |
| 15 | +): ComputedChain { |
| 16 | + return { |
| 17 | + id, |
| 18 | + distance, |
| 19 | + minX: 0, |
| 20 | + maxX: 100, |
| 21 | + chain: [], |
| 22 | + isPairedEnd: true, |
| 23 | + nonSupplementary: [], |
| 24 | + ...overrides, |
| 25 | + } |
| 26 | +} |
| 27 | + |
| 28 | +describe('createCloudScale', () => { |
| 29 | + test('creates a log scale with correct domain and range', () => { |
| 30 | + const scale = createCloudScale(1, 1000, 500) |
| 31 | + |
| 32 | + // Scale should map minDistance to 0 |
| 33 | + expect(scale(1)).toBe(0) |
| 34 | + |
| 35 | + // Scale should map maxDistance to height - padding |
| 36 | + expect(scale(1000)).toBe(500 - CLOUD_HEIGHT_PADDING) |
| 37 | + |
| 38 | + // Values in between should be mapped logarithmically |
| 39 | + const midValue = scale(100) |
| 40 | + expect(midValue).toBeGreaterThan(0) |
| 41 | + expect(midValue).toBeLessThan(500 - CLOUD_HEIGHT_PADDING) |
| 42 | + }) |
| 43 | + |
| 44 | + test('clamps values outside domain', () => { |
| 45 | + const scale = createCloudScale(1, 1000, 500) |
| 46 | + |
| 47 | + // Values below min should clamp to 0 |
| 48 | + expect(scale(0.1)).toBe(0) |
| 49 | + |
| 50 | + // Values above max should clamp to max range |
| 51 | + expect(scale(10000)).toBe(500 - CLOUD_HEIGHT_PADDING) |
| 52 | + }) |
| 53 | + |
| 54 | + test('handles small maxDistance correctly', () => { |
| 55 | + // createCloudScale uses Math.max(2, maxDistance) for domain upper bound |
| 56 | + const scale = createCloudScale(1, 1, 500) |
| 57 | + |
| 58 | + // Should still work without errors |
| 59 | + expect(scale(1)).toBeDefined() |
| 60 | + expect(scale(2)).toBeDefined() |
| 61 | + }) |
| 62 | +}) |
| 63 | + |
| 64 | +describe('calculateCloudTicks', () => { |
| 65 | + test('generates ticks for a typical domain', () => { |
| 66 | + const result = calculateCloudTicks([1, 10000], 500) |
| 67 | + |
| 68 | + expect(result.height).toBe(500) |
| 69 | + expect(result.minDistance).toBe(1) |
| 70 | + expect(result.maxDistance).toBe(10000) |
| 71 | + expect(result.ticks.length).toBeGreaterThan(0) |
| 72 | + |
| 73 | + // Each tick should have a value and y position |
| 74 | + for (const tick of result.ticks) { |
| 75 | + expect(tick.value).toBeGreaterThan(0) |
| 76 | + expect(tick.y).toBeGreaterThanOrEqual(0) |
| 77 | + expect(tick.y).toBeLessThanOrEqual(500 - CLOUD_HEIGHT_PADDING) |
| 78 | + } |
| 79 | + }) |
| 80 | + |
| 81 | + test('tick y values increase with tick values', () => { |
| 82 | + const result = calculateCloudTicks([1, 10000], 500) |
| 83 | + |
| 84 | + // Ticks should be in increasing order of both value and y |
| 85 | + for (let i = 1; i < result.ticks.length; i++) { |
| 86 | + const prev = result.ticks[i - 1]! |
| 87 | + const curr = result.ticks[i]! |
| 88 | + expect(curr.value).toBeGreaterThan(prev.value) |
| 89 | + expect(curr.y).toBeGreaterThan(prev.y) |
| 90 | + } |
| 91 | + }) |
| 92 | + |
| 93 | + test('handles small domain', () => { |
| 94 | + const result = calculateCloudTicks([1, 100], 300) |
| 95 | + |
| 96 | + expect(result.ticks.length).toBeGreaterThan(0) |
| 97 | + expect(result.maxDistance).toBe(100) |
| 98 | + }) |
| 99 | + |
| 100 | + test('handles large domain', () => { |
| 101 | + const result = calculateCloudTicks([1, 1000000], 800) |
| 102 | + |
| 103 | + expect(result.ticks.length).toBeGreaterThan(0) |
| 104 | + expect(result.maxDistance).toBe(1000000) |
| 105 | + }) |
| 106 | +}) |
| 107 | + |
| 108 | +describe('calculateCloudYOffsetsUtil', () => { |
| 109 | + test('computes Y offsets from chain distances', () => { |
| 110 | + const chains = [ |
| 111 | + createMockChain('chain1', 100), |
| 112 | + createMockChain('chain2', 500), |
| 113 | + createMockChain('chain3', 1000), |
| 114 | + ] |
| 115 | + |
| 116 | + const result = calculateCloudYOffsetsUtil(chains, 500) |
| 117 | + |
| 118 | + expect(result.chainYOffsets.size).toBe(3) |
| 119 | + expect(result.cloudMaxDistance).toBe(1000) |
| 120 | + |
| 121 | + // Y offsets should increase with distance |
| 122 | + const y1 = result.chainYOffsets.get('chain1')! |
| 123 | + const y2 = result.chainYOffsets.get('chain2')! |
| 124 | + const y3 = result.chainYOffsets.get('chain3')! |
| 125 | + |
| 126 | + expect(y1).toBeLessThan(y2) |
| 127 | + expect(y2).toBeLessThan(y3) |
| 128 | + }) |
| 129 | + |
| 130 | + test('chains with distance 0 are placed at y=0', () => { |
| 131 | + const chains = [ |
| 132 | + createMockChain('chain1', 0), |
| 133 | + createMockChain('chain2', 500), |
| 134 | + ] |
| 135 | + |
| 136 | + const result = calculateCloudYOffsetsUtil(chains, 500) |
| 137 | + |
| 138 | + expect(result.chainYOffsets.get('chain1')).toBe(0) |
| 139 | + expect(result.chainYOffsets.get('chain2')).toBeGreaterThan(0) |
| 140 | + }) |
| 141 | + |
| 142 | + test('uses default max distance when all chains are singletons (distance 0)', () => { |
| 143 | + const chains = [ |
| 144 | + createMockChain('chain1', 0), |
| 145 | + createMockChain('chain2', 0), |
| 146 | + createMockChain('chain3', 0), |
| 147 | + ] |
| 148 | + |
| 149 | + const result = calculateCloudYOffsetsUtil(chains, 500) |
| 150 | + |
| 151 | + // Default max distance is 1000 |
| 152 | + expect(result.cloudMaxDistance).toBe(1000) |
| 153 | + |
| 154 | + // All chains should be at y=0 |
| 155 | + expect(result.chainYOffsets.get('chain1')).toBe(0) |
| 156 | + expect(result.chainYOffsets.get('chain2')).toBe(0) |
| 157 | + expect(result.chainYOffsets.get('chain3')).toBe(0) |
| 158 | + }) |
| 159 | + |
| 160 | + test('computes maxDistance from the largest distance in visible data', () => { |
| 161 | + const chains = [ |
| 162 | + createMockChain('chain1', 100), |
| 163 | + createMockChain('chain2', 5000), |
| 164 | + createMockChain('chain3', 200), |
| 165 | + ] |
| 166 | + |
| 167 | + const result = calculateCloudYOffsetsUtil(chains, 500) |
| 168 | + |
| 169 | + // Should find the max distance from the data |
| 170 | + expect(result.cloudMaxDistance).toBe(5000) |
| 171 | + }) |
| 172 | + |
| 173 | + test('handles empty chains array', () => { |
| 174 | + const result = calculateCloudYOffsetsUtil([], 500) |
| 175 | + |
| 176 | + expect(result.chainYOffsets.size).toBe(0) |
| 177 | + // Uses default max distance when no positive distances found |
| 178 | + expect(result.cloudMaxDistance).toBe(1000) |
| 179 | + }) |
| 180 | + |
| 181 | + test('scale adapts when scrolling to region with larger insert sizes', () => { |
| 182 | + // First region with smaller insert sizes |
| 183 | + const smallInsertChains = [ |
| 184 | + createMockChain('chain1', 200), |
| 185 | + createMockChain('chain2', 300), |
| 186 | + createMockChain('chain3', 400), |
| 187 | + ] |
| 188 | + |
| 189 | + const result1 = calculateCloudYOffsetsUtil(smallInsertChains, 500) |
| 190 | + expect(result1.cloudMaxDistance).toBe(400) |
| 191 | + |
| 192 | + // Second region with larger insert sizes (simulating scroll) |
| 193 | + const largeInsertChains = [ |
| 194 | + createMockChain('chain4', 1000), |
| 195 | + createMockChain('chain5', 5000), |
| 196 | + createMockChain('chain6', 10000), |
| 197 | + ] |
| 198 | + |
| 199 | + const result2 = calculateCloudYOffsetsUtil(largeInsertChains, 500) |
| 200 | + expect(result2.cloudMaxDistance).toBe(10000) |
| 201 | + |
| 202 | + // The max distance should be different, showing the scale adapts |
| 203 | + expect(result2.cloudMaxDistance).toBeGreaterThan(result1.cloudMaxDistance) |
| 204 | + }) |
| 205 | + |
| 206 | + test('Y offsets are bounded by height minus padding', () => { |
| 207 | + const chains = [ |
| 208 | + createMockChain('chain1', 100), |
| 209 | + createMockChain('chain2', 1000), |
| 210 | + createMockChain('chain3', 10000), |
| 211 | + ] |
| 212 | + |
| 213 | + const height = 500 |
| 214 | + const result = calculateCloudYOffsetsUtil(chains, height) |
| 215 | + |
| 216 | + for (const [, yOffset] of result.chainYOffsets) { |
| 217 | + expect(yOffset).toBeGreaterThanOrEqual(0) |
| 218 | + expect(yOffset).toBeLessThanOrEqual(height - CLOUD_HEIGHT_PADDING) |
| 219 | + } |
| 220 | + }) |
| 221 | + |
| 222 | + test('consistent scale for same data', () => { |
| 223 | + const chains = [ |
| 224 | + createMockChain('chain1', 100), |
| 225 | + createMockChain('chain2', 500), |
| 226 | + createMockChain('chain3', 1000), |
| 227 | + ] |
| 228 | + |
| 229 | + const result1 = calculateCloudYOffsetsUtil(chains, 500) |
| 230 | + const result2 = calculateCloudYOffsetsUtil(chains, 500) |
| 231 | + |
| 232 | + // Same input should produce same output |
| 233 | + expect(result1.cloudMaxDistance).toBe(result2.cloudMaxDistance) |
| 234 | + expect(result1.chainYOffsets.get('chain1')).toBe( |
| 235 | + result2.chainYOffsets.get('chain1'), |
| 236 | + ) |
| 237 | + expect(result1.chainYOffsets.get('chain2')).toBe( |
| 238 | + result2.chainYOffsets.get('chain2'), |
| 239 | + ) |
| 240 | + expect(result1.chainYOffsets.get('chain3')).toBe( |
| 241 | + result2.chainYOffsets.get('chain3'), |
| 242 | + ) |
| 243 | + }) |
| 244 | +}) |
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