1 files changed, 93 insertions, 0 deletions
diff --git a/node_modules/resolve/test/node-modules-paths.js b/node_modules/resolve/test/node-modules-paths.js
new file mode 100644
index 000000000..a917f063a
--- /dev/null
+++ b/node_modules/resolve/test/node-modules-paths.js
@@ -0,0 +1,93 @@
+var test = require('tape');
+var path = require('path');
+var parse = path.parse || require('path-parse');
+var keys = require('object-keys');
+
+var nodeModulesPaths = require('../lib/node-modules-paths');
+
+var verifyDirs = function verifyDirs(t, start, dirs, moduleDirectories, paths) {
+    var moduleDirs = [].concat(moduleDirectories || 'node_modules');
+
+    var foundModuleDirs = {};
+    var uniqueDirs = {};
+    var parsedDirs = {};
+    for (var i = 0; i < dirs.length; ++i) {
+        var parsed = parse(dirs[i]);
+        if (!foundModuleDirs[parsed.base]) { foundModuleDirs[parsed.base] = 0; }
+        foundModuleDirs[parsed.base] += 1;
+        parsedDirs[parsed.dir] = true;
+        uniqueDirs[dirs[i]] = true;
+    }
+    t.equal(keys(parsedDirs).length >= start.split(path.sep).length, true, 'there are >= dirs than "start" has');
+    var foundModuleDirNames = keys(foundModuleDirs);
+    t.deepEqual(foundModuleDirNames, moduleDirs.concat(paths || []), 'all desired module dirs were found');
+    t.equal(keys(uniqueDirs).length, dirs.length, 'all dirs provided were unique');
+
+    var counts = {};
+    for (var j = 0; j < foundModuleDirNames.length; ++j) {
+        counts[foundModuleDirs[j]] = true;
+    }
+    t.equal(keys(counts).length, 1, 'all found module directories had the same count');
+};
+
+test('node-modules-paths', function (t) {
+    t.test('no options', function (t) {
+        var start = path.join(__dirname, 'resolver');
+        var dirs = nodeModulesPaths(start);
+
+        verifyDirs(t, start, dirs);
+
+        t.end();
+    });
+
+    t.test('empty options', function (t) {
+        var start = path.join(__dirname, 'resolver');
+        var dirs = nodeModulesPaths(start, {});
+
+        verifyDirs(t, start, dirs);
+
+        t.end();
+    });
+
+    t.test('with paths option', function (t) {
+        var start = path.join(__dirname, 'resolver');
+        var paths = ['a', 'b'];
+        var dirs = nodeModulesPaths(start, { paths: paths });
+
+        verifyDirs(t, start, dirs, null, paths);
+
+        t.end();
+    });
+
+    t.test('with moduleDirectory option', function (t) {
+        var start = path.join(__dirname, 'resolver');
+        var moduleDirectory = 'not node modules';
+        var dirs = nodeModulesPaths(start, { moduleDirectory: moduleDirectory });
+
+        verifyDirs(t, start, dirs, moduleDirectory);
+
+        t.end();
+    });
+
+    t.test('with 1 moduleDirectory and paths options', function (t) {
+        var start = path.join(__dirname, 'resolver');
+        var paths = ['a', 'b'];
+        var moduleDirectory = 'not node modules';
+        var dirs = nodeModulesPaths(start, { paths: paths, moduleDirectory: moduleDirectory });
+
+        verifyDirs(t, start, dirs, moduleDirectory, paths);
+
+        t.end();
+    });
+
+    t.test('with 1+ moduleDirectory and paths options', function (t) {
+        var start = path.join(__dirname, 'resolver');
+        var paths = ['a', 'b'];
+        var moduleDirectories = ['not node modules', 'other modules'];
+        var dirs = nodeModulesPaths(start, { paths: paths, moduleDirectory: moduleDirectories });
+
+        verifyDirs(t, start, dirs, moduleDirectories, paths);
+
+        t.end();
+    });
+});