tests/pyosys: print log on failed test, fix make clean

tests/pyosys/run_tests.py

@@ -1,39 +1,46 @@
-from pathlib import Path
-import shutil
-import subprocess
 import sys
+import shutil
+import shlex
+import subprocess
+from pathlib import Path
 
 __file_dir__ = Path(__file__).absolute().parent
 
-if len(sys.argv) != 2:
-	print(f"Usage: {sys.argv[0]} {sys.argv[1]}")
+if len(sys.argv) > 2 or len(sys.argv) == 2 and sys.argv[1] != 'yosys':
+	print(f"Usage: {sys.argv[0]} [yosys]")
 	exit(64)
 
-binary = []
-if sys.argv[1] in ["yosys"]:
-	binary = [__file_dir__.parents[1] / "yosys", "-Qy"]
+if len(sys.argv) == 2:
+	binary = [str(__file_dir__.parents[1] / "yosys"), "-Qy"]
 else:
-	binary = [sys.argv[1]]
+	binary = [sys.executable or shutil.which("python3") or "python3"] # sys.executable can actually be None
 
 tests = __file_dir__.glob("test_*.py")
-errors = False
+
 log_dir = __file_dir__ / "logs"
 try:
 	shutil.rmtree(log_dir)
 except FileNotFoundError:
 	pass
+fail_logs = set()
 for test in tests:
 	print(f"* {test.name} ", end="")
 	log_dir.mkdir(parents=True, exist_ok=True)
 	log = log_dir / (test.stem + ".log")
-	result = subprocess.run([
-		*binary,
-		test
-	], stdout=open(log, "w"), stderr=subprocess.STDOUT)
+	cmd = [*binary, str(test)]
+	log_file = open(log, "w", encoding="utf8")
+	log_file.write(f"$ {shlex.join(cmd)}\n")
+	log_file.flush()
+	result = subprocess.run(cmd, stdout=log_file, stderr=subprocess.STDOUT)
 	if result.returncode == 0:
 		print("OK!")
 	else:
 		print(f"FAILED: {log}")
-		errors = True
-if errors:
+		fail_logs.add(log)
+	log_file.close()
+for log in fail_logs:
+	print(f">>> {log}")
+	with open(log, encoding="utf8") as f:
+		print(f.read())
+if len(fail_logs):
 	exit(1)