node-source-map-support/test.js

212 lines
6.0 KiB
JavaScript

require('./source-map-support').install();
var SourceMapGenerator = require('source-map').SourceMapGenerator;
var child_process = require('child_process');
var assert = require('assert');
var fs = require('fs');
function compareLines(actual, expected) {
assert(actual.length >= expected.length, 'got ' + actual.length + ' lines but expected at least ' + expected.length + ' lines');
for (var i = 0; i < expected.length; i++) {
// Some tests are regular expressions because the output format changed slightly between node v0.9.2 and v0.9.3
if (expected[i] instanceof RegExp) {
assert(expected[i].test(actual[i]), JSON.stringify(actual[i]) + ' does not match ' + expected[i]);
} else {
assert.equal(actual[i], expected[i]);
}
}
}
function compareStackTrace(source, expected) {
var sourceMap = new SourceMapGenerator({
file: '.generated.js',
sourceRoot: '.'
});
for (var i = 1; i <= 100; i++) {
sourceMap.addMapping({
generated: { line: i, column: 1 },
original: { line: 1000 + i, column: 100 + i },
source: 'line' + i + '.js'
});
}
fs.writeFileSync('.generated.js.map', sourceMap);
fs.writeFileSync('.generated.js', 'exports.test = function() {' +
source.join('\n') + '};//@ sourceMappingURL=.generated.js.map');
try {
delete require.cache[require.resolve('./.generated')];
require('./.generated').test();
} catch (e) {
compareLines(e.stack.split('\n'), expected);
}
fs.unlinkSync('.generated.js');
fs.unlinkSync('.generated.js.map');
}
function compareStdout(done, source, expected) {
var sourceMap = new SourceMapGenerator({
file: '.generated.js',
sourceRoot: '.'
});
sourceMap.addMapping({
generated: { line: 1, column: 1 },
original: { line: 1, column: 1 },
source: '.original.js'
});
fs.writeFileSync('.original.js', 'this is the original code');
fs.writeFileSync('.generated.js.map', sourceMap);
fs.writeFileSync('.generated.js', source.join('\n') +
'//@ sourceMappingURL=.generated.js.map');
child_process.exec('node ./.generated', function(error, stdout, stderr) {
try {
compareLines((stdout + stderr).trim().split('\n'), expected);
} catch (e) {
return done(e);
}
fs.unlinkSync('.generated.js');
fs.unlinkSync('.generated.js.map');
fs.unlinkSync('.original.js');
done();
});
}
it('normal throw', function() {
compareStackTrace([
'throw new Error("test");'
], [
'Error: test',
' at Object.exports.test (./line1.js:1001:101)'
]);
});
it('throw inside function', function() {
compareStackTrace([
'function foo() {',
' throw new Error("test");',
'}',
'foo();'
], [
'Error: test',
' at foo (./line2.js:1002:102)',
' at Object.exports.test (./line4.js:1004:104)'
]);
});
it('throw inside function inside function', function() {
compareStackTrace([
'function foo() {',
' function bar() {',
' throw new Error("test");',
' }',
' bar();',
'}',
'foo();'
], [
'Error: test',
' at bar (./line3.js:1003:103)',
' at foo (./line5.js:1005:105)',
' at Object.exports.test (./line7.js:1007:107)'
]);
});
it('eval', function() {
compareStackTrace([
'eval("throw new Error(\'test\')");'
], [
'Error: test',
/^ at Object.eval \(eval at <anonymous> \(\.\/line1\.js:1001:101\)/,
' at Object.exports.test (./line1.js:1001:101)'
]);
});
it('eval inside eval', function() {
compareStackTrace([
'eval("eval(\'throw new Error(\\"test\\")\')");'
], [
'Error: test',
/^ at Object.eval \(eval at <anonymous> \(eval at <anonymous> \(\.\/line1\.js:1001:101\)/,
/^ at Object.eval \(eval at <anonymous> \(\.\/line1\.js:1001:101\)/,
' at Object.exports.test (./line1.js:1001:101)'
]);
});
it('eval inside function', function() {
compareStackTrace([
'function foo() {',
' eval("throw new Error(\'test\')");',
'}',
'foo();'
], [
'Error: test',
/^ at eval \(eval at foo \(\.\/line2\.js:1002:102\)/,
' at foo (./line2.js:1002:102)',
' at Object.exports.test (./line4.js:1004:104)'
]);
});
it('eval with sourceURL', function() {
compareStackTrace([
'eval("throw new Error(\'test\')//@ sourceURL=sourceURL.js");'
], [
'Error: test',
' at Object.eval (sourceURL.js:1:7)',
' at Object.exports.test (./line1.js:1001:101)'
]);
});
it('eval with sourceURL inside eval', function() {
compareStackTrace([
'eval("eval(\'throw new Error(\\"test\\")//@ sourceURL=sourceURL.js\')");'
], [
'Error: test',
' at Object.eval (sourceURL.js:1:7)',
/^ at Object.eval \(eval at <anonymous> \(\.\/line1\.js:1001:101\)/,
' at Object.exports.test (./line1.js:1001:101)'
]);
});
it('default options', function(done) {
compareStdout(done, [
'',
'function foo() { throw new Error("this is the error"); }',
'require("./source-map-support").install();',
'process.nextTick(foo);',
'process.nextTick(function() { process.exit(1); });'
], [
'./.original.js:1',
'this is the original code',
'^',
'Error: this is the error',
' at foo (./.original.js:1:1)'
]);
});
it('handleUncaughtExceptions is true', function(done) {
compareStdout(done, [
'',
'function foo() { throw new Error("this is the error"); }',
'require("./source-map-support").install({ handleUncaughtExceptions: true });',
'process.nextTick(foo);'
], [
'./.original.js:1',
'this is the original code',
'^',
'Error: this is the error',
' at foo (./.original.js:1:1)'
]);
});
it('handleUncaughtExceptions is false', function(done) {
compareStdout(done, [
'',
'function foo() { throw new Error("this is the error"); }',
'require("./source-map-support").install({ handleUncaughtExceptions: false });',
'process.nextTick(foo);'
], [
/\/.generated.js:2$/,
'function foo() { throw new Error("this is the error"); }',
' ^',
'Error: this is the error',
' at foo (./.original.js:1:1)'
]);
});