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test-evaluated-expressions.ts
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// Copyright 2018 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
import * as assert from 'assert';
import {before, describe, it} from 'mocha';
import * as extend from 'extend';
import {defaultConfig} from '../src/agent/config';
import {Debuglet} from '../src/agent/debuglet';
import * as scanner from '../src/agent/io/scanner';
import * as SourceMapper from '../src/agent/io/sourcemapper';
import * as debugapi from '../src/agent/v8/debugapi';
import consoleLogLevel = require('console-log-level');
import * as stackdriver from '../src/types/stackdriver';
// eslint-disable-next-line @typescript-eslint/no-var-requires
const code = require('./test-evaluated-expressions-code.js');
describe('debugger provides useful information', () => {
let api: debugapi.DebugApi;
const config = extend({}, defaultConfig, {
allowExpressions: true,
forceNewAgent_: true,
});
before(done => {
const logger = consoleLogLevel({
level: Debuglet.logLevelToName(config.logLevel),
});
scanner.scan(config.workingDirectory, /\.js$/).then(async fileStats => {
const jsStats = fileStats.selectStats(/\.js$/);
const mapFiles = fileStats.selectFiles(/\.map$/, process.cwd());
const mapper = await SourceMapper.create(mapFiles);
assert(mapper);
api = debugapi.create(logger, config, jsStats, mapper!);
done();
});
});
function getValue(
exp: stackdriver.Variable,
varTable: Array<stackdriver.Variable | null>
): string | null | undefined {
if ('value' in exp) {
return exp.value;
}
if ('varTableIndex' in exp) {
const index = exp.varTableIndex!;
const val = varTable[index];
if (!val) {
return val;
}
return getValue(val, varTable);
}
throw new Error(
`The variable ${JSON.stringify(exp, null, 2)} ` +
"does not have a 'value' nor a 'varTableIndex' property"
);
}
function assertValue(
bp: stackdriver.Breakpoint,
targetIndex: number,
expectedName: string,
expectedValue: string
) {
const rawExp = bp.evaluatedExpressions[targetIndex];
assert(rawExp);
const exp = rawExp!;
assert.strictEqual(exp.name, expectedName);
assert.strictEqual(getValue(exp, bp.variableTable), expectedValue);
}
function assertMembers(
bp: stackdriver.Breakpoint,
targetIndex: number,
expectedName: string,
expectedMemberValues: stackdriver.Variable[]
) {
const rawExp = bp.evaluatedExpressions[targetIndex];
assert(rawExp);
const exp = rawExp!;
assert.strictEqual(exp.name, expectedName);
const rawIndex = exp.varTableIndex;
assert.notStrictEqual(rawIndex, undefined);
const index = rawIndex!;
const rawVarData = bp.variableTable[index];
assert.notStrictEqual(rawVarData, undefined);
const varData = rawVarData!;
const memberMap = new Map<string, string | null | undefined>();
assert.notStrictEqual(varData.members, undefined);
for (const member of varData.members!) {
assert.notStrictEqual(member.name, undefined);
const name = member.name!;
assert(!memberMap.has(name));
memberMap.set(name, getValue(member, bp.variableTable));
}
for (const member of expectedMemberValues) {
const rawName = member.name;
assert.notStrictEqual(rawName, undefined);
const expected = member.value;
assert.notStrictEqual(
expected,
undefined,
'Each expected member must have its value specified'
);
const actual = memberMap.get(rawName!);
assert.deepStrictEqual(
actual,
expected,
`Expected ${rawName} to have value ${expected} but found ${actual}`
);
}
}
it('should provide data about plain objects', done => {
const bp: stackdriver.Breakpoint = {
id: 'fake-id-123',
location: {
path: 'build/test/test-evaluated-expressions-code.js',
line: 19,
},
expressions: ['someObject'],
} as stackdriver.Breakpoint;
api.set(bp, err => {
assert.ifError(err);
api.wait(bp, err => {
assert.ifError(err);
assertMembers(bp, 0, 'someObject', [
{name: 'aNumber', value: '1'},
{name: 'aString', value: 'some string'},
]);
api.clear(bp, err => {
assert.ifError(err);
done();
});
});
process.nextTick(() => code.foo());
});
});
it('should provide data about arrays', done => {
const bp: stackdriver.Breakpoint = {
id: 'fake-id-123',
location: {
path: 'build/test/test-evaluated-expressions-code.js',
line: 19,
},
expressions: ['someArray'],
} as stackdriver.Breakpoint;
api.set(bp, err => {
assert.ifError(err);
api.wait(bp, err => {
assert.ifError(err);
assertMembers(bp, 0, 'someArray', [
{name: '0', value: '1'},
{name: '1', value: '2'},
{name: '2', value: '3'},
{name: 'length', value: '3'},
]);
api.clear(bp, err => {
assert.ifError(err);
done();
});
});
process.nextTick(() => code.foo());
});
});
it('should provide data about regexes', done => {
const bp: stackdriver.Breakpoint = {
id: 'fake-id-123',
location: {
path: 'build/test/test-evaluated-expressions-code.js',
line: 19,
},
expressions: ['someRegex'],
} as stackdriver.Breakpoint;
api.set(bp, err => {
assert.ifError(err);
api.wait(bp, err => {
assert.ifError(err);
assertValue(bp, 0, 'someRegex', '/abc+/');
api.clear(bp, err => {
assert.ifError(err);
done();
});
});
process.nextTick(() => code.foo());
});
});
it('should provide data about responses', done => {
const bp: stackdriver.Breakpoint = {
id: 'fake-id-123',
location: {
path: 'build/test/test-evaluated-expressions-code.js',
line: 19,
},
expressions: ['res'],
} as stackdriver.Breakpoint;
api.set(bp, err => {
assert.ifError(err);
api.wait(bp, err => {
assert.ifError(err);
assertMembers(bp, 0, 'res', [
{name: 'readable', value: 'true'},
{name: '_eventsCount', value: '0'},
{name: '_maxListeners', value: 'undefined'},
{name: 'complete', value: 'false'},
{name: 'url', value: ''},
{name: 'statusCode', value: '200'},
{name: '_consuming', value: 'false'},
{name: '_dumped', value: 'false'},
]);
api.clear(bp, err => {
assert.ifError(err);
done();
});
});
process.nextTick(() => code.foo());
});
});
});