Fix Windows symlinks is-outside-dir bug

index.js

@@ -1,5 +1,6 @@
 'use strict';
 
+const fs = require('fs');
 const path = require('path');
 const { promisify } = require('util');
 const glob = promisify(require('glob'));
@@ -50,6 +51,8 @@ class TestExclude {
 
  this.exclude = prepGlobPatterns([].concat(this.exclude));
 
+ this.cwd = fs.realpathSync(this.cwd);
+
  this.handleNegation();
  }
 

test/test-exclude.js

@@ -1,4 +1,5 @@
 'use strict';
+const fs = require('fs');
 const path = require('path');
 const t = require('tap');
 
@@ -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');
+ 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 =>