fix: normalization of input, and enhance boj run output

boj/commands/run/runner.py

@@ -162,11 +162,7 @@ async def _run_testcase_async(
 
             await asyncio.sleep(uniform(0.2, 0.7))
 
-            if process.returncode != 0:
-                color = "bold magenta"
-                status = "ERROR"
-                text = error.rstrip()
-            elif testcase.compare(output):
+            if testcase.compare(output):
                 color = "bold green"
                 status = "PASSED"
                 text = output
@@ -175,6 +171,11 @@ async def _run_testcase_async(
                 status = "FAILED"
                 text = output
 
+            if process.returncode != 0:
+                color = "bold magenta"
+                status = "ERROR"
+                text += '\n' + error.rstrip()
+
             progress.update(
                 task_id=task_id,
                 description=create_case_label(label_width, testcase.label)

boj/data/testcase.py

@@ -5,7 +5,7 @@
 
 def normalize(s: str):
     s = s.rstrip()
-    normalized_text = "\n".join([line.rstrip() for line in s.splitlines()])
+    normalized_text = "\n".join([line.rstrip() for line in s.splitlines()]).rstrip()
     return normalized_text
 
 
@@ -19,11 +19,11 @@ def __init__(self, label: str, input_: str, output: str):
 
     @property
     def input(self):
-        return self.__input
+        return normalize(self.__input)
 
     @property
     def output(self):
-        return self.__output
+        return normalize(self.__output)
 
     @property
     def label(self):
@@ -33,7 +33,7 @@ def __repr__(self):
         return "Testcase {" + self.input + ", " + self.output + "}"
 
     def compare(self, stdout: str):
-        return normalize(self.output) == normalize(stdout)
+        return self.output == normalize(stdout)
 
     def to_text_files(self, dir_: str) -> (TextFile, TextFile):
         input_ = TextFile(