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Fix Windows symlinks is-outside-dir bug #47

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3 changes: 3 additions & 0 deletions index.js
Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
'use strict';

const fs = require('fs');
const path = require('path');
const { promisify } = require('util');
const glob = promisify(require('glob'));
Expand Down Expand Up @@ -50,6 +51,8 @@ class TestExclude {

this.exclude = prepGlobPatterns([].concat(this.exclude));

this.cwd = fs.realpathSync(this.cwd);

this.handleNegation();
}

Expand Down
38 changes: 30 additions & 8 deletions test/test-exclude.js
Original file line number Diff line number Diff line change
@@ -1,4 +1,5 @@
'use strict';
const fs = require('fs');
const path = require('path');
const t = require('tap');

Expand Down Expand Up @@ -59,14 +60,35 @@ t.test('does not instrument files outside cwd', t =>
);

if (process.platform === 'win32') {
t.test('does not instrument files on different drive (win32)', t =>
testHelper(t, {
options: {
cwd: 'C:\\project'
},
no: ['D:\\project\\foo.js']
})
);
t.test('does not instrument files on different drive (win32)', async t => {
const origRealPathSync = fs.realpathSync;
fs.realpathSync = s => s;
try {
await testHelper(t, {
options: {
cwd: 'C:\\project'
},
no: ['D:\\project\\foo.js']
})
} finally {
fs.realpathSync = origRealPathSync;
}
});

t.test('is not fooled by junctions (win32)', async t => {
const origRealPathSync = fs.realpathSync;
fs.realpathSync = s => s.replace(/symlink/, 'truedir');
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Author

@osher osher Feb 22, 2021

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LMK if you prefer stubbing fs.realpathSync as part of testHelper

try {
await testHelper(t, {
options: {
cwd: 'C:\\project\\symlink'
},
yes: ['C:\\project\\truedir\\foo.js']
})
} finally {
fs.realpathSync = origRealPathSync;
}
});
}

t.test('can instrument files outside cwd if relativePath=false', t =>
Expand Down