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Add deepCopyBytes method to LibBytes

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This commit is contained in:
Amir Bandeali
2018-05-09 16:27:50 -07:00
parent c0cf55b40b
commit a5a7217c8f
3 changed files with 92 additions and 0 deletions
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34
packages/contracts/test/libraries/lib_bytes.ts
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@@ -60,6 +60,40 @@ describe('LibBytes', () => {
await blockchainLifecycle.revertAsync();
});
describe.only('deepCopyBytes', () => {
const byteArrayLongerThan32BytesLen = (byteArrayLongerThan32Bytes.length - 2) / 2;
it('should throw if length of copy is 0', async () => {
const index = new BigNumber(0);
const len = new BigNumber(0);
return expect(
libBytes.publicDeepCopyBytes.callAsync(byteArrayLongerThan32Bytes, index, len),
).to.be.rejectedWith(constants.REVERT);
});
it('should throw if start index + length to copy is greater than length of byte array', async () => {
const index = new BigNumber(0);
const len = new BigNumber(byteArrayLongerThan32BytesLen + 1);
return expect(
libBytes.publicDeepCopyBytes.callAsync(byteArrayLongerThan32Bytes, index, len),
).to.be.rejectedWith(constants.REVERT);
});
it('should copy the entire byte array if index = 0 and len = b.length', async () => {
const index = new BigNumber(0);
const len = new BigNumber(byteArrayLongerThan32BytesLen);
const copy = await libBytes.publicDeepCopyBytes.callAsync(byteArrayLongerThan32Bytes, index, len);
expect(copy).to.equal(byteArrayLongerThan32Bytes);
});
it('should copy part of the byte array if area to copy is less than b.length', async () => {
const index = new BigNumber(10);
const len = new BigNumber(4);
const copy = await libBytes.publicDeepCopyBytes.callAsync(byteArrayLongerThan32Bytes, index, len);
const expectedCopy = `0x${byteArrayLongerThan32Bytes.slice(22, 30)}`;
expect(copy).to.equal(expectedCopy);
});
});
describe('areBytesEqual', () => {
it('should return true if byte arrays are equal (both arrays < 32 bytes)', async () => {
const areBytesEqual = await libBytes.publicAreBytesEqual.callAsync(