Add postprocess script

m3tpostprocess_unittest.py

@@ -0,0 +1,27 @@
+from m3tpostprocess import process_line, process_scn_line
+
+
+def test_process_line(src, expected):
+    processed = process_line(src)
+    if processed != expected:
+        raise AssertionError(f"Expected: {expected}, but got: {processed}")
+
+
+def test_process_scn_line(src, expected):
+    processed = process_scn_line(src)
+    if processed != expected:
+        raise AssertionError(f"Expected: {expected}, but got: {processed}")
+
+
+if __name__ == "__main__":
+    test_process_line("Hello....", "Hello……")
+    test_process_line("……。", "……")
+    test_process_line("，。……", "……")
+    test_process_line("…—~", "……")
+    test_process_line("----~...", "——")
+    test_process_line("~~--", "～～～～")
+    test_process_line("!?!?", "？！？！")
+    test_process_line("これはテストです测试。", "测试。")
+    test_process_line("「地形模型。」", "「地形模型」")
+    test_process_scn_line("「地形模型。%command;」", "「地形模型%command;」")
+    test_process_scn_line("%cmd;25%的可能。", "%cmd;25％的可能。")