[Piglit] [PATCH] deqp: Add test profile for external dEQP-GLES3 tests

[Chad Versace]

Google opensourced the drawElements Quality Product Testsuite (dEQP) as
part of the Android Lollipop release. It's git repo lives in the Android
tree at [https://android.googlesource.com/platform/external/deqp/].

This patch adds a new module, deqp_gles3.py, that runs the dEQP-GLES3
tests.  It queries the 'deqp-gles3' executable at runtime for the list
of testcases.  The module attempts queries the 'deqp-gles3' executable
only if the environment variable PIGLIT_DEQP_GLES3_EXE or the
piglit.conf option deqp-gles3.exe is set.

Why do we need to use Pigit as the testrunner for dEQP? (After all, dEQP has
its own testrunner). Because dEQP runs all tests in a single process. If test
17530 of 55409 crashes, then the dEQP testrunner crashes and the remaining
tests never run. Piglit doesn't suffer from that problem, because it runs each
test as a separate process.

Tested on Intel Ivybridge by running the command
    piglit run -t dEQP-GLES3/info/vendor \
      tests/deqp_gles3.py tests/quick.py results
with and without PIGLIT_DEQP_GLES3_EXE set and with and without
piglit.conf:deqp-gles.exe set.

Cc: Dylan Baker <dylanx.c.baker at intel.com>
Cc: Michael W Mason <michael.w.mason at intel.com>
Signed-off-by: Chad Versace <chad.versace at linux.intel.com>
---

v2:
    - Fix DEQPTest.interpret_result to correctly parse test output. (mwmason)
    - Remove unused imports (dcbaker)
    - Remove extra newlines (dcbaker)
    - Don't use 'global' keyword (dcbaker)
    - Use global constant for DEQP_GLES3_EXE (dcbaker)
    - Use 'super' keyword (dcbaker)

 piglit.conf.example |   7 +++
 tests/deqp_gles3.py | 136 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 143 insertions(+)
 create mode 100644 tests/deqp_gles3.py

diff --git a/piglit.conf.example b/piglit.conf.example
index a864c01..0ac0f4f 100644
--- a/piglit.conf.example
+++ b/piglit.conf.example
@@ -33,6 +33,13 @@ bindir=/home/usr/oclconform
 testA
 testB
 
+;[deqp-gles3]
+;
+; Path to the deqp-gles3 executable. You can also set this with the environment
+; variable PIGLIT_DEQP_GLES3_EXE. Piglit will run the dEQP-GLES3 tests if and
+; only if this option is set.
+;exe=/home/knuth/deqp/modules/gles3/deqp-gles3
+
 ; Section for specific oclconform test.  One of these sections is required for
 ; each test list in the oclconform section and must be called:
 ; oclconform-$testname
diff --git a/tests/deqp_gles3.py b/tests/deqp_gles3.py
new file mode 100644
index 0000000..35cac48
--- /dev/null
+++ b/tests/deqp_gles3.py
@@ -0,0 +1,136 @@
+# Copyright 2014 Intel Corporation
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included in
+# all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+
+import ConfigParser
+import os
+import subprocess
+
+# Piglit modules
+import framework
+from framework.profile import Test, TestProfile
+
+__all__ = ['profile']
+
+def get_option(env_varname, config_option):
+    """Query the given environment variable and then piglit.conf for the
+    option. Return None if the option is unset.
+    """
+    opt = os.environ.get(env_varname, None)
+    if opt is not None:
+        return opt
+
+    try:
+        opt = framework.core.PIGLIT_CONFIG.get(config_option[0],
+                                               config_option[1])
+    except ConfigParser.NoSectionError, ConfigParser.NoOptionError:
+        pass
+
+    return opt
+
+
+# Path to the deqp-gles3 executable.
+DEQP_GLES3_EXE = get_option('PIGLIT_DEQP_GLES3_EXE', ('deqp-gles3', 'exe'))
+
+
+def gen_caselist_txt():
+    """Generate dEQP-GLES3-cases.txt and return its path."""
+    # dEQP is stupid (2014-12-07):
+    #   1. To generate the caselist file, dEQP requires that the process's
+    #      current directory must be that same as that of the executable.
+    #      Otherwise, it fails to find its data files.
+    #   2. dEQP creates the caselist file in the process's current directory
+    #      and provides no option to change its location.
+    #   3. dEQP creates a GL context when generating the caselist. Therefore,
+    #      the caselist must be generated on the test target rather than the
+    #      build host. In other words, when the build host and test target
+    #      differ then we cannot pre-generate the caselist on the build host:
+    #      we must *dynamically* generate it during the testrun.
+    basedir = os.path.dirname(DEQP_GLES3_EXE)
+    caselist_path = os.path.join(basedir, 'dEQP-GLES3-cases.txt')
+    subprocess.check_call(
+        [DEQP_GLES3_EXE, '--deqp-runmode=txt-caselist'],
+        cwd=basedir)
+    assert os.path.exists(caselist_path)
+    return caselist_path
+
+
+def iter_deqp_test_cases():
+    """Iterate over original dEQP GLES3 testcase names."""
+    caselist_path = gen_caselist_txt()
+    with open(caselist_path) as caselist_file:
+        for i, line in enumerate(caselist_file):
+            if line.startswith('GROUP:'):
+                continue
+            elif line.startswith('TEST:'):
+                yield line[len('TEST:'):].strip()
+            else:
+                raise Exception('{0}:{1}: ill-formed line'.format(caselist_txt, i))
+
+
+class DEQPTest(Test):
+
+    RESULT_MAP = {"Pass"           : "pass",
+                  "Fail"           : "fail",
+                  "QualityWarning" : "warn",
+                  "InternalError"  : "fail",
+                  "Crash"          : "crash",
+                  "NotSupported"   : "skip"}
+
+    def __init__(self, case_name):
+        command = [
+            DEQP_GLES3_EXE,
+            '--deqp-case=' + case_name,
+            '--deqp-visibility=hidden',
+        ]
+        super(DEQPTest, self).__init__(command)
+
+        # dEQP's working directory must be the same as that of the executable,
+        # otherwise it cannot find its data files (2014-12-07).
+        self.cwd = os.path.dirname(DEQP_GLES3_EXE)
+
+    def interpret_result(self):
+        if self.result['returncode'] != 0:
+            self.result['result'] = 'fail'
+            return
+
+        for line in self.result['out'].split('\n'):
+            line = line.lstrip()
+            for (k, v) in DEQPTest.RESULT_MAP.iteritems():
+                if line.startswith(k):
+                    self.result['result'] = v
+                    return
+
+        # We failed to parse the test output. Fallback to 'fail'.
+        self.result['result'] = 'fail'
+
+def add_tests():
+    if DEQP_GLES3_EXE is None:
+        return
+
+    for deqp_testname in iter_deqp_test_cases():
+        # dEQP uses '.' as the testgroup separator.
+        piglit_testname = deqp_testname.replace('.', '/')
+
+        test = DEQPTest(deqp_testname)
+        profile.test_list[piglit_testname] = test
+
+
+profile = TestProfile()
+add_tests()
-- 
2.2.0