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import { join } from 'path';
import * as chai from 'chai';
import { CompilerOptions, ContractArtifact } from 'ethereum-types';
import 'mocha';
import { Compiler } from '../src/compiler';
import { fsWrapper } from '../src/utils/fs_wrapper';
import { exchange_binary } from './fixtures/exchange_bin';
import { chaiSetup } from './util/chai_setup';
import { constants } from './util/constants';
chaiSetup.configure();
const expect = chai.expect;
describe('#Compiler', function(): void {
this.timeout(constants.timeoutMs); // tslint:disable-line:no-invalid-this
const artifactsDir = `${__dirname}/fixtures/artifacts`;
const contractsDir = `${__dirname}/fixtures/contracts`;
const compilerOpts: CompilerOptions = {
artifactsDir,
contractsDir,
contracts: constants.contracts,
};
it('should create an Exchange artifact with the correct unlinked binary', async () => {
compilerOpts.contracts = ['Exchange'];
const exchangeArtifactPath = `${artifactsDir}/Exchange.json`;
if (fsWrapper.doesPathExistSync(exchangeArtifactPath)) {
await fsWrapper.removeFileAsync(exchangeArtifactPath);
}
await new Compiler(compilerOpts).compileAsync();
const opts = {
encoding: 'utf8',
};
const exchangeArtifactString = await fsWrapper.readFileAsync(exchangeArtifactPath, opts);
const exchangeArtifact: ContractArtifact = JSON.parse(exchangeArtifactString);
// The last 43 bytes of the binaries are metadata which may not be equivalent
const metadataByteLength = 43;
const metadataHexLength = metadataByteLength * 2;
const unlinkedBinaryWithoutMetadata = exchangeArtifact.compilerOutput.evm.bytecode.object.slice(
2,
-metadataHexLength,
);
const exchangeBinaryWithoutMetadata = exchange_binary.slice(0, -metadataHexLength);
expect(unlinkedBinaryWithoutMetadata).to.equal(exchangeBinaryWithoutMetadata);
});
it("should throw when Whatever.sol doesn't contain a Whatever contract", async () => {
const contract = 'BadContractName';
const exchangeArtifactPath = `${artifactsDir}/${contract}.json`;
if (fsWrapper.doesPathExistSync(exchangeArtifactPath)) {
await fsWrapper.removeFileAsync(exchangeArtifactPath);
}
compilerOpts.contracts = [contract];
const compiler = new Compiler(compilerOpts);
expect(compiler.compileAsync()).to.be.rejected();
});
describe('after a successful compilation', () => {
const contract = 'Exchange';
let artifactPath: string;
let artifactCreatedAtMs: number;
beforeEach(async () => {
compilerOpts.contracts = [contract];
artifactPath = `${artifactsDir}/${contract}.json`;
if (fsWrapper.doesPathExistSync(artifactPath)) {
await fsWrapper.removeFileAsync(artifactPath);
}
await new Compiler(compilerOpts).compileAsync();
artifactCreatedAtMs = (await fsWrapper.statAsync(artifactPath)).mtimeMs;
});
it('recompilation should update artifact when source has changed', async () => {
// append some meaningless data to the contract, so that its hash
// will change, so that the compiler will decide to recompile it.
fsWrapper.appendFileAsync(join(contractsDir, `${contract}.sol`), ' ');
await new Compiler(compilerOpts).compileAsync();
const artifactModifiedAtMs = (await fsWrapper.statAsync(artifactPath)).mtimeMs;
expect(artifactModifiedAtMs).to.be.greaterThan(artifactCreatedAtMs);
});
it("recompilation should NOT update artifact when source hasn't changed", async () => {
await new Compiler(compilerOpts).compileAsync();
const artifactModifiedAtMs = (await fsWrapper.statAsync(artifactPath)).mtimeMs;
expect(artifactModifiedAtMs).to.equal(artifactCreatedAtMs);
});
});
it('should only compile what was requested', async () => {
// remove all artifacts
for (const artifact of await fsWrapper.readdirAsync(artifactsDir)) {
await fsWrapper.removeFileAsync(join(artifactsDir, artifact));
}
// compile EmptyContract
compilerOpts.contracts = ['EmptyContract'];
await new Compiler(compilerOpts).compileAsync();
// make sure the artifacts dir only contains EmptyContract.json
for (const artifact of await fsWrapper.readdirAsync(artifactsDir)) {
expect(artifact).to.equal('EmptyContract.json');
}
});
});
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