[Piglit] [Patch v2 6/8] igt.py: add docstrings.

[Dylan Baker]

In some cases this is really just about formatting.

Signed-off-by: Dylan Baker <dylanx.c.baker at intel.com>
---
 tests/igt.py | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/tests/igt.py b/tests/igt.py
index b7ee165..4a46fb0 100644
--- a/tests/igt.py
+++ b/tests/igt.py
@@ -22,6 +22,14 @@
 # OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 # DEALINGS IN THE SOFTWARE.
 
+"""IGTTest: Execute an intel-gpu-tools test.
+
+To use this, create an igt symlink in piglit/bin which points to the root
+of the intel-gpu-tools sources with the compiled tests. Piglit will
+automatically add all tests into the 'igt' category.
+
+"""
+
 import os
 import re
 import sys
@@ -33,16 +41,14 @@ from framework.profile import TestProfile, Test
 
 __all__ = ['profile']
 
-#############################################################################
-##### IGTTest: Execute an intel-gpu-tools test
-#####
-##### To use this, create an igt symlink in piglit/bin which points to the root
-##### of the intel-gpu-tools sources with the compiled tests. Piglit will
-##### automatically add all tests into the 'igt' category.
-#############################################################################
 
 
 def check_environment():
+    """Check that the environment that piglit is running in is appropraite.
+
+    IGT requires root, debugfs to be mounted, and to be the only drm client.
+
+    """
     debugfs_path = "/sys/kernel/debug/dri"
     if os.getuid() != 0:
         print "Test Environment check: not root!"
@@ -77,11 +83,11 @@ if not (os.path.exists(os.path.join(IGT_TEST_ROOT, 'single-tests.txt'))
     sys.exit(0)
 
 IGT_ENVIRONMENT_OK = check_environment()
-
 profile = TestProfile()  # pylint: disable=invalid-name
 
 
 class IGTTest(Test):
+    """Test class for running libdrm."""
     def __init__(self, binary, arguments=None):
         if arguments is None:
             arguments = []
@@ -112,6 +118,7 @@ class IGTTest(Test):
 
 
 def list_tests(listname):
+    """Parse igt test list and return them as a list."""
     with open(os.path.join(IGT_TEST_ROOT, listname + '.txt'), 'r') as f:
         lines = (line.rstrip() for line in f.readlines())
 
@@ -130,6 +137,7 @@ def list_tests(listname):
 
 
 def add_subtest_cases(test):
+    """Get subtest instances."""
     proc = subprocess.Popen(
         [os.path.join(IGT_TEST_ROOT, test), '--list-subtests'],
         stdout=subprocess.PIPE,
-- 
2.2.2