diff --git a/openfisca_core/scripts/run_test.py b/openfisca_core/scripts/run_test.py
index 6a6e7eb9e0..848800c4ef 100644
--- a/openfisca_core/scripts/run_test.py
+++ b/openfisca_core/scripts/run_test.py
@@ -31,11 +31,8 @@ def main():
         'name_filter': args.name_filter,
         }
 
-    tests_ok = True
-    for path in args.path:
-        path = os.path.abspath(path)
-        test_ok = run_tests(tax_benefit_system, path, options)
-        tests_ok = tests_ok and test_ok
+    paths = map(os.path.abspath, args.path)
+    tests_ok = run_tests(tax_benefit_system, paths, options)
 
     if not tests_ok:
         sys.exit(1)
diff --git a/openfisca_core/tools/test_runner.py b/openfisca_core/tools/test_runner.py
index 9e996022b0..2b1334a573 100644
--- a/openfisca_core/tools/test_runner.py
+++ b/openfisca_core/tools/test_runner.py
@@ -60,7 +60,7 @@ def dict_constructor(loader, node):
 
 # Exposed methods
 
-def generate_tests(tax_benefit_system, path, options = {}):
+def generate_tests(tax_benefit_system, paths, options = {}):
     """
     Generates a lazy iterator of all the YAML tests contained in a file or a directory.
 
@@ -70,20 +70,26 @@ def generate_tests(tax_benefit_system, path, options = {}):
 
     """
 
-    if os.path.isdir(path):
-        return _generate_tests_from_directory(tax_benefit_system, path, options)
-    else:
-        return _generate_tests_from_file(tax_benefit_system, path, options)
+    if isinstance(paths, str):
+        paths = [paths]
 
+    for path in paths:
+        if os.path.isdir(path):
+            for test in _generate_tests_from_directory(tax_benefit_system, path, options):
+                yield test
+        else:
+            for test in _generate_tests_from_file(tax_benefit_system, path, options):
+                yield test
 
-def run_tests(tax_benefit_system, path, options = {}):
+
+def run_tests(tax_benefit_system, paths, options = {}):
     """
     Runs all the YAML tests contained in a file or a directory.
 
     If `path` is a directory, subdirectories will be recursively explored.
 
     :param TaxBenefitSystem tax_benefit_system: the tax-benefit system to use to run the tests
-    :param str path: the path towards the file or directory containing thes tests. If it is a directory, subdirectories will be recursively explored.
+    :param (str/list) paths: A path, or a list of paths, towards the files or directories containing the tests to run. If a path is a directory, subdirectories will be recursively explored.
     :param dict options: See more details below.
 
     :raises AssertionError: if a test does not pass
@@ -103,7 +109,7 @@ def run_tests(tax_benefit_system, path, options = {}):
     """
     return nose.run(
         # The suite argument must be a lambda for nose to run the tests lazily
-        suite = lambda: generate_tests(tax_benefit_system, path, options),
+        suite = lambda: generate_tests(tax_benefit_system, paths, options),
         # Nose crashes if it gets any unexpected argument.
         argv = sys.argv[:1],
         # testRunner = nose.core.TextTestRunner(stream = open(os.devnull, 'w')),