diff --git a/mdtest/lib/src/commands/auto.dart b/mdtest/lib/src/commands/auto.dart
index 83dfe9a..88323fe 100644
--- a/mdtest/lib/src/commands/auto.dart
+++ b/mdtest/lib/src/commands/auto.dart
@@ -32,7 +32,7 @@
   Future<int> runCore() async {
     printInfo('Running "mdtest auto command" ...');
 
-    this._specs = await loadSpecs(argResults['specs']);
+    this._specs = await loadSpecs(argResults);
 
     this._devices = await getDevices();
     if (_devices.isEmpty) {
diff --git a/mdtest/lib/src/commands/run.dart b/mdtest/lib/src/commands/run.dart
index 089ac43..07d332e 100644
--- a/mdtest/lib/src/commands/run.dart
+++ b/mdtest/lib/src/commands/run.dart
@@ -29,7 +29,7 @@
   Future<int> runCore() async {
     printInfo('Running "mdtest run command" ...');
 
-    this._specs = await loadSpecs(argResults['specs']);
+    this._specs = await loadSpecs(argResults);
     printTrace(_specs.toString());
 
     this._devices = await getDevices();
diff --git a/mdtest/lib/src/mobile/device_spec.dart b/mdtest/lib/src/mobile/device_spec.dart
index 59a18c8..8522159 100644
--- a/mdtest/lib/src/mobile/device_spec.dart
+++ b/mdtest/lib/src/mobile/device_spec.dart
@@ -6,6 +6,8 @@
 import 'dart:convert';
 import 'dart:io';
 
+import 'package:args/args.dart';
+
 import 'device.dart';
 import 'key_provider.dart';
 import '../globals.dart';
@@ -62,18 +64,25 @@
                        'app path: $appPath>';
 }
 
-Future<dynamic> loadSpecs(String specsPath) async {
+Future<dynamic> loadSpecs(ArgResults argResults) async {
+  String specsPath = argResults['specs'];
   try {
     // Read specs file into json format
     dynamic newSpecs = JSON.decode(await new File(specsPath).readAsString());
     // Get the parent directory of the specs file
     String rootPath = new File(specsPath).parent.absolute.path;
-    // Normalize the 'test-path' in the specs file
-    // newSpecs['test-path'] = normalizePath(rootPath, newSpecs['test-path']);
-    newSpecs['test-paths']
-      = newSpecs['test-paths'].map(
-        (String testPath) => normalizePath(rootPath, testPath)
-      );
+    // Normalize the 'test-path' in the specs file and add extra test paths
+    // from the command line argument
+    List<String> testPathsFromSpec
+      = listFilePathsFromGlobPatterns(rootPath, newSpecs['test-paths']);
+    print('Test paths from spec: $testPathsFromSpec');
+    List<String> testPathsFromCommandLine
+      = listFilePathsFromGlobPatterns(Directory.current.path, argResults.rest);
+    print('Test paths from command line: $testPathsFromCommandLine');
+    newSpecs['test-paths'] = mergeWithoutDuplicate(
+      testPathsFromSpec,
+      testPathsFromCommandLine
+    );
     // Normalize the 'app-path' in the specs file
     newSpecs['devices'].forEach((String name, Map<String, String> map) {
       map['app-path'] = normalizePath(rootPath, map['app-path']);
diff --git a/mdtest/lib/src/test/reporter.dart b/mdtest/lib/src/test/reporter.dart
index 0a87559..d7f8a43 100644
--- a/mdtest/lib/src/test/reporter.dart
+++ b/mdtest/lib/src/test/reporter.dart
@@ -38,7 +38,6 @@
       '1..$currentTestNum\n'
       '# tests $currentTestNum\n'
       '# pass $passingTestsNum\n'
-      '\n'
     );
   }
 
diff --git a/mdtest/lib/src/util.dart b/mdtest/lib/src/util.dart
index f195760..2840353 100644
--- a/mdtest/lib/src/util.dart
+++ b/mdtest/lib/src/util.dart
@@ -6,6 +6,7 @@
 import 'dart:math';
 
 import 'package:path/path.dart' as path;
+import 'package:glob/glob.dart';
 
 import 'globals.dart';
 
@@ -70,3 +71,41 @@
     i++;
   }
 }
+
+/// Return the absolute paths of a list of files based on a list of glob
+/// patterns.  The order of the result follow the order of the given glob
+/// patterns, but the order of file paths corresponding to the same glob
+/// pattern is not guranteed.
+List<String> listFilePathsFromGlobPatterns(
+  String rootPath,
+  Iterable<String> globPatterns
+) {
+  List<String> result = <String>[];
+  if (globPatterns == null) {
+    return result;
+  }
+  Set<String> seen = new Set<String>();
+  for (String globPattern in globPatterns) {
+    Glob fileGlob = new Glob(globPattern);
+    Iterable<String> filePaths = fileGlob.listSync().map(
+      (FileSystemEntity file) => normalizePath(rootPath, file.path)
+    );
+    Set<String> neverSeen = new Set.from(filePaths).difference(seen);
+    result.addAll(neverSeen);
+    seen.addAll(neverSeen);
+  }
+  return result;
+}
+
+/// Merge two iterables into a list and remove duplicates.  The order is kept
+/// where elements in [first] appear before elements in [second] and the order
+/// inside each iterable is also kept.  [first] and [second] must not contain
+/// any duplicate item.
+List<String> mergeWithoutDuplicate(
+  Iterable<String> first,
+  Iterable<String> second
+) {
+  List<String> result = new List.from(first);
+  result.addAll(second.where((String e) => !first.contains(e)));
+  return result;
+}
diff --git a/mdtest/pubspec.yaml b/mdtest/pubspec.yaml
index ac93572..4ad70a0 100644
--- a/mdtest/pubspec.yaml
+++ b/mdtest/pubspec.yaml
@@ -5,6 +5,7 @@
   args: ^0.13.4
   stack_trace: ^1.4.0
   coverage: ^0.7.9
+  glob: ">=1.1.3"
   dlog:
     path: ../../../../third_party/dart/dlog
   flutter_driver: