Fix: when converting to patterns to directories, append path.sep to p…

…revent overlapping dirs from being omitted. Fixes gh-135

lib/test-stream.js

@@ -25,7 +25,7 @@ function patternsToDirectories(patterns) {
       return true;
     });
 
-    return parts.join(path.sep)
+    return `${parts.join(path.sep)}${path.sep}`;
   })
   .filter((name) => name !== '')
   // Remove elements that would cause the same files to be visited more than
@@ -50,7 +50,7 @@ function patternsToDirectories(patterns) {
       // All other values are unique and should be allowed
       return true;
     });
-  });
+  }).map(dir => dir.slice(0, -1));
 }
 
 class TestStream extends Subject {

test/collateral-nested-similar-names/package.json

@@ -0,0 +1 @@
+{"version": "3.0.0"}

test/collateral-nested-similar-names/test/get/index.js

@@ -0,0 +1,6 @@
+/*---
+description: Should not test in sloppy mode
+flags: [onlyStrict]
+expected:
+  pass: true
+---*/

test/collateral-nested-similar-names/test/getOwnPropertyDescriptor/index.js

@@ -0,0 +1,6 @@
+/*---
+description: Should not test in sloppy mode
+flags: [onlyStrict]
+expected:
+  pass: true
+---*/

test/collateral-nested-similar-names/test/getPrototypeOf/index.js

@@ -0,0 +1,6 @@
+/*---
+description: Should not test in sloppy mode
+flags: [onlyStrict]
+expected:
+  pass: true
+---*/

test/file-matching.js

@@ -5,10 +5,16 @@ const path = require('path');
 const tap = require('tap');
 
 const sameMembers = (assert, actual, expected) => {
-  const expectedSet = expected.map((expectedMember) => {
-    return expectedMember.split('/').join(path.sep);
-  });
-  assert.equal(actual.length, expected.length);
+  const expectedSet = expected.map((expectedMember) => path.normalize(expectedMember));
+  assert.equal(actual.length, expected.length, `
+    Expected:
+
+      ${actual}
+
+    to have the same length as:
+
+      ${expected}
+  `);
 
   for (let actualMember of actual) {
     assert.assert(expectedSet.includes(actualMember), actualMember);
@@ -102,6 +108,30 @@ tap.test('file matching: file names (siblings)', assert => {
     }).then(assert.done, assert.fail);
 });
 
+tap.test('file matching: directories with name overlap', assert => {
+  run([
+      'test/collateral-nested-similar-names/test/get/index.js',
+      'test/collateral-nested-similar-names/test/getOwnPropertyDescriptor/index.js',
+      'test/collateral-nested-similar-names/test/getPrototypeOf/index.js',
+    ])
+    .then((results) => {
+      const files = results.map((result) => result.file);
+      const relativePaths = results.map((result) => result.relative);
+      const expectedFiles = [
+        'test/collateral-nested-similar-names/test/get/index.js',
+        'test/collateral-nested-similar-names/test/getOwnPropertyDescriptor/index.js',
+        'test/collateral-nested-similar-names/test/getPrototypeOf/index.js',
+      ];
+      sameMembers(assert, files, expectedFiles);
+      const expectedRelPaths = [
+        'get/index.js',
+        'getOwnPropertyDescriptor/index.js',
+        'getPrototypeOf/index.js',
+      ];
+      sameMembers(assert, relativePaths, expectedRelPaths);
+    }).then(assert.done, assert.fail);
+});
+
 tap.test('file matching: file names (subdirectory first)', assert => {
   run([
       'test/collateral-nested/test/evens/deep/26.js',