[clang-tidy] Properly forward clang-tidy output when running tests

When running tests, the check_clang_tidy script encodes the output
string, making it hard to read when debugging checks. This removes the
.encode() call.

Test Plan:
Making a new default check for testing (as of right now, it includes a
failing test):

[~/llvm-project/clang-tools-extra] python3 clang-tidy/add_new_check.py
bugprone example
<...>
Pre-changes:

[~/llvm-project/build] ninja check-clang-tools
<...>
------------------------ clang-tidy output -----------------------
b"1 warning
generated.\n/data/users/nvankempen/llvm-project/build/Debug/tools/clang/tools/extra/test/clang-tidy/checkers/Output/bugprone-example.cpp.tmp.cpp:4:6:
warning: function 'f' is insufficiently awesome [bugprone-example]\nvoid
f();\n
^\n/data/users/nvankempen/llvm-project/build/Debug/tools/clang/tools/extra/test/clang-tidy/checkers/Output/bugprone-example.cpp.tmp.cpp:4:6:
note: insert 'awesome'\nvoid f();\n     ^\n     awesome_\n"

------------------------------------------------------------------
<...>
Post-changes:

[~/llvm-project/build] ninja check-clang-tools
<...>
------------------------ clang-tidy output -----------------------
1 warning generated.
/data/users/nvankempen/llvm-project/build/Debug/tools/clang/tools/extra/test/clang-tidy/checkers/Output/bugprone-example.cpp.tmp.cpp:4:6:
warning: function 'f' is insufficiently awesome [bugprone-example]
void f();
     ^
/data/users/nvankempen/llvm-project/build/Debug/tools/clang/tools/extra/test/clang-tidy/checkers/Output/bugprone-example.cpp.tmp.cpp:4:6:
note: insert 'awesome'
void f();
     ^
     awesome_

------------------------------------------------------------------
<...>

Differential Revision: https://reviews.llvm.org/D127807

diff --git a/clang-tools-extra/test/clang-tidy/check_clang_tidy.py b/clang-tools-extra/test/clang-tidy/check_clang_tidy.py
index 4ce6cd4..760550a 100755 (executable)
--- a/clang-tools-extra/test/clang-tidy/check_clang_tidy.py
+++ b/clang-tools-extra/test/clang-tidy/check_clang_tidy.py
@@ -173,13 +173,13 @@ class CheckRunner:
     print('Running ' + repr(args) + '...')
     clang_tidy_output = try_run(args)
     print('------------------------ clang-tidy output -----------------------')
-    print(clang_tidy_output.encode())
-    print('\n------------------------------------------------------------------')
+    print(clang_tidy_output.encode(sys.stdout.encoding, errors="replace").decode(sys.stdout.encoding))
+    print('------------------------------------------------------------------')
 
     diff_output = try_run(['diff', '-u', self.original_file_name, self.temp_file_name], False)
-    print('------------------------------ Fixes -----------------------------\n' +
-          diff_output +
-          '\n------------------------------------------------------------------')
+    print('------------------------------ Fixes -----------------------------')
+    print(diff_output)
+    print('------------------------------------------------------------------')
     return clang_tidy_output
 
   def check_fixes(self):