Add the ability to parse directories

Change-Id: I0ff6c803608d91e04b8e40750265157d3f4f7530
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

grafana_dashboards/builder.py

@@ -12,6 +12,8 @@
 # License for the specific language governing permissions and limitations
 # under the License.
 
+import os
+
 from oslo_config import cfg
 from oslo_log import log as logging
 
@@ -46,7 +48,17 @@ class Builder(object):
         self.parser = YamlParser()
 
     def load_files(self, path):
-        self.parser.parse(path)
+        files_to_process = []
+        if os.path.isdir(path):
+            files_to_process.extend([os.path.join(path, f)
+                                     for f in os.listdir(path)
+                                     if (f.endswith('.yaml')
+                                         or f.endswith('.yml'))])
+        else:
+            files_to_process.append(path)
+
+        for fn in files_to_process:
+            self.parser.parse(fn)
 
     def update_dashboard(self, path):
         self.load_files(path)

tests/cmd/test_validate.py

@@ -58,6 +58,40 @@ class TestCaseValidateScenarios(TestWithScenarios, TestCase):
 
 class TestCaseValidate(TestCase):
 
+    def test_validate_directory_success(self):
+        path = os.path.join(
+            os.path.dirname(__file__), '../fixtures/cmd/validate/test0001')
+        required = [
+            'SUCCESS!',
+        ]
+        stdout, stderr = self.shell(
+            'validate %s' % path, exitcodes=[0])
+        for r in required:
+            self.assertThat(
+                (stdout + stderr),
+                matchers.MatchesRegex(r, re.DOTALL | re.MULTILINE))
+
+    def test_validate_directory_invalid(self):
+        path = os.path.join(
+            os.path.dirname(__file__), '../fixtures/cmd/validate/__invalid__')
+        self._validate_invalid_file_or_directory(path)
+
+    def test_validate_file_invalid(self):
+        path = os.path.join(
+            os.path.dirname(__file__), '../fixtures/cmd/validate/invalid.yaml')
+        self._validate_invalid_file_or_directory(path)
+
+    def _validate_invalid_file_or_directory(self, path):
+        required = [
+            '%s: ERROR: \[Errno 2\] No such file or directory:' % path,
+        ]
+        stdout, stderr = self.shell(
+            'validate %s' % path, exitcodes=[1])
+        for r in required:
+            self.assertThat(
+                (stdout + stderr),
+                matchers.MatchesRegex(r, re.DOTALL | re.MULTILINE))
+
     def test_validate_without_path(self):
         required = [
             '.*?^usage: grafana-dashboards validate \[-h\] path',

tests/fixtures/cmd/validate/test0001/good-dashboard-0001.yaml

@@ -0,0 +1 @@
+../good-dashboard-0001.yaml