34 lines
No EOL
952 B
JavaScript
34 lines
No EOL
952 B
JavaScript
const Block = require('./block');
|
|
|
|
describe('Block', () => {
|
|
let data, lastBlock, block;
|
|
|
|
beforeEach(() => {
|
|
data = 'bar';
|
|
lastBlock = Block.genesis();
|
|
block = Block.mineBlock(lastBlock, data);
|
|
});
|
|
|
|
it('sets the `data` to match the input', () => {
|
|
expect(block.data).toEqual(data);
|
|
});
|
|
|
|
it('sets the `lastHash` to match the hash of the last block', () => {
|
|
expect(block.lastHash).toEqual(lastBlock.hash);
|
|
});
|
|
|
|
it('generates a hash that matches the difficulty', () => {
|
|
expect(block.hash.substring(0, block.difficulty))
|
|
.toEqual('0'.repeat(block.difficulty));
|
|
});
|
|
|
|
it('lowers the difficulty for slowly mined blocks', () => {
|
|
expect(Block.adjustDifficulty(block, block.timestamp+360000))
|
|
.toEqual(block.difficulty-1);
|
|
});
|
|
|
|
it('raises the difficulty for quickly mined blocks', () => {
|
|
expect(Block.adjustDifficulty(block, block.timestamp+1))
|
|
.toEqual(block.difficulty+1);
|
|
});
|
|
}); |