1 files changed, 103 insertions, 0 deletions
diff --git a/tests/rules/test_document_start.py b/tests/rules/test_document_start.py
new file mode 100644
index 0000000..ee2e9d3
--- /dev/null
+++ b/tests/rules/test_document_start.py
@@ -0,0 +1,103 @@
+# Copyright (C) 2016 Adrien Vergé
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from tests.common import RuleTestCase
+
+
+class DocumentStartTestCase(RuleTestCase):
+    rule_id = 'document-start'
+
+    def test_disabled(self):
+        conf = 'document-start: disable'
+        self.check('', conf)
+        self.check('key: val\n', conf)
+        self.check('---\n'
+                   'key: val\n', conf)
+
+    def test_required(self):
+        conf = ('document-start: {present: true}\n'
+                'empty-lines: disable\n')
+        self.check('', conf)
+        self.check('\n', conf)
+        self.check('key: val\n', conf, problem=(1, 1))
+        self.check('\n'
+                   '\n'
+                   'key: val\n', conf, problem=(3, 1))
+        self.check('---\n'
+                   'key: val\n', conf)
+        self.check('\n'
+                   '\n'
+                   '---\n'
+                   'key: val\n', conf)
+
+    def test_forbidden(self):
+        conf = ('document-start: {present: false}\n'
+                'empty-lines: disable\n')
+        self.check('', conf)
+        self.check('key: val\n', conf)
+        self.check('\n'
+                   '\n'
+                   'key: val\n', conf)
+        self.check('---\n'
+                   'key: val\n', conf, problem=(1, 1))
+        self.check('\n'
+                   '\n'
+                   '---\n'
+                   'key: val\n', conf, problem=(3, 1))
+        self.check('first: document\n'
+                   '---\n'
+                   'key: val\n', conf, problem=(2, 1))
+
+    def test_multiple_documents(self):
+        conf = 'document-start: {present: true}'
+        self.check('---\n'
+                   'first: document\n'
+                   '...\n'
+                   '---\n'
+                   'second: document\n'
+                   '...\n'
+                   '---\n'
+                   'third: document\n', conf)
+        self.check('---\n'
+                   'first: document\n'
+                   '---\n'
+                   'second: document\n'
+                   '---\n'
+                   'third: document\n', conf)
+        self.check('---\n'
+                   'first: document\n'
+                   '...\n'
+                   'second: document\n'
+                   '---\n'
+                   'third: document\n', conf, problem=(4, 1, 'syntax'))
+
+    def test_directives(self):
+        conf = 'document-start: {present: true}'
+        self.check('%YAML 1.2\n'
+                   '---\n'
+                   'doc: ument\n'
+                   '...\n', conf)
+        self.check('%YAML 1.2\n'
+                   '%TAG ! tag:clarkevans.com,2002:\n'
+                   '---\n'
+                   'doc: ument\n'
+                   '...\n', conf)
+        self.check('---\n'
+                   'doc: 1\n'
+                   '...\n'
+                   '%YAML 1.2\n'
+                   '---\n'
+                   'doc: 2\n'
+                   '...\n', conf)