21 lines
950 B
JavaScript
21 lines
950 B
JavaScript
export function expectDataViewEqual(actual, expected) {
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const actualBytes = new Uint8Array(actual.buffer, actual.byteOffset, actual.byteLength)
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const expectedBytes = new Uint8Array(expected.buffer, expected.byteOffset, expected.byteLength)
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const arraysToString = () => {
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return `actual: [${Array.from(actualBytes).map(byte => '0x' + byte.toString(16)).join(', ')}]\n` +
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`expected: [${Array.from(expectedBytes).map(byte => '0x' + byte.toString(16)).join(', ')}]`
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}
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if (actualBytes.length !== expectedBytes.length) {
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throw new Error(`DataView length mismatch: actual: ${actualBytes.length}, expected: ${expectedBytes.length}\n` + arraysToString())
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}
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for (let i = 0; i < actualBytes.length; i++) {
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if (actualBytes[i] !== expectedBytes[i]) {
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throw new Error(
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`Byte mismatch at offset ${i}: 0x${actualBytes[i].toString(16)} !== 0x${expectedBytes[i].toString(16)}\n` + arraysToString()
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)
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}
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}
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}
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