[UR][Tests] Print all CTS outputs (from gtest) in CI

Author: szadam

test/conformance/README.md

@@ -8,4 +8,4 @@ In the future, when all bugs are fixed, and the tests pass,
 this solution will no longer be necessary.
 When you fix any test, the match file must be updated
 Empty match files indicate that there are no failing tests
-in a particular group for the corresponding adapter.
+in a particular group for the corresponding adapter.

test/conformance/cts_exe.py

@@ -7,6 +7,8 @@
  SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 
 """
+# Printing conformance test output from gtest and checking failed tests with match files.
+# The match files contain tests that are expected to fail.
 
 import sys
 from argparse import ArgumentParser
@@ -18,18 +20,24 @@
 
     parser = ArgumentParser()
     parser.add_argument("--test_command", help="Ctest test case")
-
     args = parser.parse_args()
+    
     result = subprocess.Popen([args.test_command, '--gtest_brief=1'], stdout = subprocess.PIPE, text = True)  # nosec B603
 
     pat = re.compile(r'\[( )*FAILED( )*\]')
-    for line in result.stdout.readlines():
+    output_list = []
+    for line in result.stdout:
+        output_list.append(line)
         if pat.search(line):
             test_case = line.split(" ")[5]
             test_case = test_case.rstrip(',')
             print(test_case)
 
-    result.communicate()
-    rc = result.returncode
+    rc = result.wait()
     if rc < 0:
-        print(signal.strsignal(abs(result.returncode)))
+        print(signal.strsignal(abs(rc)))
+
+    print("#### GTEST_OUTPUT ####", file=sys.stderr)
+    for output in output_list:
+        print(output, file=sys.stderr)
+    print("#### GTEST_OUTPUT_END ####", file=sys.stderr)