394 lines
12 KiB
JavaScript
394 lines
12 KiB
JavaScript
require('./source-map-support').install({
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emptyCacheBetweenOperations: true // Needed to be able to test for failure
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});
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var SourceMapGenerator = require('source-map').SourceMapGenerator;
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var child_process = require('child_process');
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var assert = require('assert');
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var fs = require('fs');
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function compareLines(actual, expected) {
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assert(actual.length >= expected.length, 'got ' + actual.length + ' lines but expected at least ' + expected.length + ' lines');
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for (var i = 0; i < expected.length; i++) {
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// Some tests are regular expressions because the output format changed slightly between node v0.9.2 and v0.9.3
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if (expected[i] instanceof RegExp) {
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assert(expected[i].test(actual[i]), JSON.stringify(actual[i]) + ' does not match ' + expected[i]);
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} else {
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assert.equal(actual[i], expected[i]);
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}
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}
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}
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function createEmptySourceMap() {
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return new SourceMapGenerator({
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file: '.generated.js',
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sourceRoot: '.'
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});
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}
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function createSourceMapWithGap() {
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var sourceMap = createEmptySourceMap();
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sourceMap.addMapping({
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generated: { line: 100, column: 0 },
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original: { line: 100, column: 0 },
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source: '.original.js'
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});
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return sourceMap;
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}
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function createSingleLineSourceMap() {
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var sourceMap = createEmptySourceMap();
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sourceMap.addMapping({
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generated: { line: 1, column: 0 },
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original: { line: 1, column: 0 },
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source: '.original.js'
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});
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return sourceMap;
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}
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function createMultiLineSourceMap() {
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var sourceMap = createEmptySourceMap();
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for (var i = 1; i <= 100; i++) {
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sourceMap.addMapping({
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generated: { line: i, column: 0 },
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original: { line: 1000 + i, column: 99 + i },
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source: 'line' + i + '.js'
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});
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}
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return sourceMap;
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}
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function createMultiLineSourceMapWithSourcesContent() {
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var sourceMap = createEmptySourceMap();
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var original = new Array(1001).join('\n');
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for (var i = 1; i <= 100; i++) {
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sourceMap.addMapping({
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generated: { line: i, column: 0 },
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original: { line: 1000 + i, column: 4 },
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source: 'original.js'
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});
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original += ' line ' + i + '\n';
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}
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sourceMap.setSourceContent('original.js', original);
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return sourceMap;
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}
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function compareStackTrace(sourceMap, source, expected) {
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// Check once with a separate source map
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fs.writeFileSync('.generated.js.map', sourceMap);
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fs.writeFileSync('.generated.js', 'exports.test = function() {' +
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source.join('\n') + '};//@ sourceMappingURL=.generated.js.map');
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try {
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delete require.cache[require.resolve('./.generated')];
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require('./.generated').test();
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} catch (e) {
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compareLines(e.stack.split('\n'), expected);
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}
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fs.unlinkSync('.generated.js');
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fs.unlinkSync('.generated.js.map');
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// Check again with an inline source map (in a data URL)
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fs.writeFileSync('.generated.js', 'exports.test = function() {' +
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source.join('\n') + '};//@ sourceMappingURL=data:application/json;base64,' +
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new Buffer(sourceMap.toString()).toString('base64'));
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try {
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delete require.cache[require.resolve('./.generated')];
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require('./.generated').test();
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} catch (e) {
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compareLines(e.stack.split('\n'), expected);
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}
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fs.unlinkSync('.generated.js');
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}
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function compareStdout(done, sourceMap, source, expected) {
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fs.writeFileSync('.original.js', 'this is the original code');
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fs.writeFileSync('.generated.js.map', sourceMap);
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fs.writeFileSync('.generated.js', source.join('\n') +
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'//@ sourceMappingURL=.generated.js.map');
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child_process.exec('node ./.generated', function(error, stdout, stderr) {
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try {
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compareLines((stdout + stderr).trim().split('\n'), expected);
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} catch (e) {
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return done(e);
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}
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fs.unlinkSync('.generated.js');
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fs.unlinkSync('.generated.js.map');
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fs.unlinkSync('.original.js');
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done();
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});
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}
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it('normal throw', function() {
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compareStackTrace(createMultiLineSourceMap(), [
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'throw new Error("test");'
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], [
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'Error: test',
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/^ at Object\.exports\.test \(.*\/line1\.js:1001:101\)$/
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]);
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});
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it('throw inside function', function() {
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compareStackTrace(createMultiLineSourceMap(), [
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'function foo() {',
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' throw new Error("test");',
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'}',
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'foo();'
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], [
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'Error: test',
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/^ at foo \(.*\/line2\.js:1002:102\)$/,
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/^ at Object\.exports\.test \(.*\/line4\.js:1004:104\)$/
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]);
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});
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it('throw inside function inside function', function() {
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compareStackTrace(createMultiLineSourceMap(), [
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'function foo() {',
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' function bar() {',
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' throw new Error("test");',
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' }',
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' bar();',
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'}',
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'foo();'
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], [
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'Error: test',
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/^ at bar \(.*\/line3\.js:1003:103\)$/,
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/^ at foo \(.*\/line5\.js:1005:105\)$/,
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/^ at Object\.exports\.test \(.*\/line7\.js:1007:107\)$/
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]);
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});
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it('eval', function() {
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compareStackTrace(createMultiLineSourceMap(), [
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'eval("throw new Error(\'test\')");'
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], [
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'Error: test',
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/^ at Object\.eval \(eval at <anonymous> \(.*\/line1\.js:1001:101\)/,
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/^ at Object\.exports\.test \(.*\/line1\.js:1001:101\)$/
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]);
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});
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it('eval inside eval', function() {
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compareStackTrace(createMultiLineSourceMap(), [
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'eval("eval(\'throw new Error(\\"test\\")\')");'
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], [
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'Error: test',
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/^ at Object\.eval \(eval at <anonymous> \(eval at <anonymous> \(.*\/line1\.js:1001:101\)/,
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/^ at Object\.eval \(eval at <anonymous> \(.*\/line1\.js:1001:101\)/,
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/^ at Object\.exports\.test \(.*\/line1\.js:1001:101\)$/
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]);
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});
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it('eval inside function', function() {
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compareStackTrace(createMultiLineSourceMap(), [
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'function foo() {',
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' eval("throw new Error(\'test\')");',
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'}',
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'foo();'
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], [
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'Error: test',
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/^ at eval \(eval at foo \(.*\/line2\.js:1002:102\)/,
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/^ at foo \(.*\/line2\.js:1002:102\)/,
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/^ at Object\.exports\.test \(.*\/line4\.js:1004:104\)$/
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]);
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});
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it('eval with sourceURL', function() {
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compareStackTrace(createMultiLineSourceMap(), [
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'eval("throw new Error(\'test\')//@ sourceURL=sourceURL.js");'
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], [
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'Error: test',
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' at Object.eval (sourceURL.js:1:7)',
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/^ at Object\.exports\.test \(.*\/line1\.js:1001:101\)$/
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]);
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});
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it('eval with sourceURL inside eval', function() {
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compareStackTrace(createMultiLineSourceMap(), [
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'eval("eval(\'throw new Error(\\"test\\")//@ sourceURL=sourceURL.js\')");'
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], [
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'Error: test',
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' at Object.eval (sourceURL.js:1:7)',
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/^ at Object\.eval \(eval at <anonymous> \(.*\/line1\.js:1001:101\)/,
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/^ at Object\.exports\.test \(.*\/line1\.js:1001:101\)$/
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]);
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});
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it('function constructor', function() {
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compareStackTrace(createMultiLineSourceMap(), [
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'throw new Function(")");'
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], [
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'SyntaxError: Unexpected token )',
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/^ at (?:Object\.)?Function \((?:unknown source|<anonymous>|native)\)$/,
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/^ at Object\.exports\.test \(.*\/line1\.js:1001:101\)$/,
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]);
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});
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it('throw with empty source map', function() {
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compareStackTrace(createEmptySourceMap(), [
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'throw new Error("test");'
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], [
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'Error: test',
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/^ at Object\.exports\.test \(.*\/.generated.js:1:96\)$/
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]);
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});
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it('throw with source map with gap', function() {
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compareStackTrace(createSourceMapWithGap(), [
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'throw new Error("test");'
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], [
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'Error: test',
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/^ at Object\.exports\.test \(.*\/.generated.js:1:96\)$/
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]);
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});
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it('sourcesContent with data URL', function() {
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compareStackTrace(createMultiLineSourceMapWithSourcesContent(), [
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'throw new Error("test");'
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], [
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'Error: test',
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/^ at Object\.exports\.test \(.*\/original.js:1001:5\)$/
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]);
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});
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it('finds the last sourceMappingURL', function() {
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compareStackTrace(createMultiLineSourceMapWithSourcesContent(), [
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'//# sourceMappingURL=missing.map.js', // NB: compareStackTrace adds another source mapping.
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'throw new Error("test");'
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], [
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'Error: test',
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/^ at Object\.exports\.test \(.*\/original.js:1002:5\)$/
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]);
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});
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it('default options', function(done) {
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compareStdout(done, createSingleLineSourceMap(), [
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'',
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'function foo() { throw new Error("this is the error"); }',
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'require("./source-map-support").install();',
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'process.nextTick(foo);',
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'process.nextTick(function() { process.exit(1); });'
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], [
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/\/.original\.js:1$/,
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'this is the original code',
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'^',
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'Error: this is the error',
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/^ at foo \(.*\/.original\.js:1:1\)$/
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]);
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});
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it('handleUncaughtExceptions is true', function(done) {
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compareStdout(done, createSingleLineSourceMap(), [
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'',
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'function foo() { throw new Error("this is the error"); }',
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'require("./source-map-support").install({ handleUncaughtExceptions: true });',
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'process.nextTick(foo);'
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], [
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/\/.original\.js:1$/,
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'this is the original code',
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'^',
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'Error: this is the error',
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/^ at foo \(.*\/.original\.js:1:1\)$/
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]);
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});
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it('handleUncaughtExceptions is false', function(done) {
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compareStdout(done, createSingleLineSourceMap(), [
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'',
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'function foo() { throw new Error("this is the error"); }',
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'require("./source-map-support").install({ handleUncaughtExceptions: false });',
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'process.nextTick(foo);'
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], [
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/\/.generated.js:2$/,
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'function foo() { throw new Error("this is the error"); }',
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' ^',
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'Error: this is the error',
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/^ at foo \(.*\/.original\.js:1:1\)$/
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]);
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});
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it('default options with empty source map', function(done) {
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compareStdout(done, createEmptySourceMap(), [
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'',
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'function foo() { throw new Error("this is the error"); }',
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'require("./source-map-support").install();',
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'process.nextTick(foo);'
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], [
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/\/.generated.js:2$/,
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'function foo() { throw new Error("this is the error"); }',
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' ^',
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'Error: this is the error',
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/^ at foo \(.*\/.generated.js:2:24\)$/
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]);
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});
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it('default options with source map with gap', function(done) {
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compareStdout(done, createSourceMapWithGap(), [
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'',
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'function foo() { throw new Error("this is the error"); }',
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'require("./source-map-support").install();',
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'process.nextTick(foo);'
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], [
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/\/.generated.js:2$/,
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'function foo() { throw new Error("this is the error"); }',
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' ^',
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'Error: this is the error',
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/^ at foo \(.*\/.generated.js:2:24\)$/
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]);
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});
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it('specifically requested error source', function(done) {
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compareStdout(done, createSingleLineSourceMap(), [
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'',
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'function foo() { throw new Error("this is the error"); }',
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'var sms = require("./source-map-support");',
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'sms.install({ handleUncaughtExceptions: false });',
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'process.on("uncaughtException", function (e) { console.log("SRC:" + sms.getErrorSource(e)); });',
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'process.nextTick(foo);'
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], [
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/^SRC:.*\/.original.js:1$/,
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'this is the original code',
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'^'
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]);
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});
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it('sourcesContent', function(done) {
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compareStdout(done, createMultiLineSourceMapWithSourcesContent(), [
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'',
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'function foo() { throw new Error("this is the error"); }',
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'require("./source-map-support").install();',
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'process.nextTick(foo);',
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'process.nextTick(function() { process.exit(1); });'
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], [
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/\/original\.js:1002$/,
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' line 2',
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' ^',
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'Error: this is the error',
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/^ at foo \(.*\/original\.js:1002:5\)$/
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]);
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});
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it('missing source maps should also be cached', function(done) {
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compareStdout(done, createSingleLineSourceMap(), [
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'',
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'var count = 0;',
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'function foo() {',
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' console.log(new Error("this is the error").stack.split("\\n").slice(0, 2).join("\\n"));',
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'}',
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'require("./source-map-support").install({',
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' retrieveSourceMap: function(name) {',
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' if (/\\.generated.js$/.test(name)) count++;',
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' return null;',
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' }',
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'});',
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'process.nextTick(foo);',
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'process.nextTick(foo);',
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'process.nextTick(function() { console.log(count); });',
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], [
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'Error: this is the error',
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/^ at foo \(.*\/.generated.js:4:15\)$/,
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'Error: this is the error',
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/^ at foo \(.*\/.generated.js:4:15\)$/,
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'1', // The retrieval should only be attempted once
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]);
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});
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