test(negative): add test suite negative for compilation error tests

unittest/negative/runAll.py

+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+# vim: ts=4 sw=4 expandtab:
+
+"""
+此脚本自动测试当前目录下所有 *.decaf 程序，输出到 output 目录下，
+并与 result 目录下的标准答案比较。
+
+请注意我们在判分时会有更多的测试用例。
+"""
+
+import os
+import subprocess
+import sys
+
+def read_txt_file(filename):
+    with open(filename,'r') as f:
+        txt = f.read().strip()
+    # Python should be able to do it automatically, but just in case...
+    txt = txt.replace('\r','')
+    return txt
+
+def main():
+    decaf_jar = os.path.join('..', '..', 'result', 'decaf.jar')
+    # in case output dir not exists
+    try:
+        if not os.path.isdir('output'):
+            os.makedirs('output')
+    except:
+        os.makedirs('output', exist_ok=True)
+    names = sys.argv[1:]
+    if not names:
+        names = sorted(os.listdir('.'))
+    for name in names:
+        bname,ext = os.path.splitext(name)
+        if ext != '.decaf':
+            continue
+        # Run the test case, redirecting stdout/stderr to output/bname.result
+        subprocess.call(['java', '-jar', decaf_jar, '-l', '1', name],
+                stdout=open(os.path.join('output', bname + '.result'), 'w'),
+                stderr=subprocess.STDOUT)
+        # Check the result
+        expected = read_txt_file(os.path.join('result',bname+'.result'))
+        actual = read_txt_file(os.path.join('output',bname+'.result'))
+        if expected == actual:
+            info = 'OK :)'
+        else:
+            info = 'ERROR!'
+        print('{0:<60}{1}'.format(name,info))
+    if os.name == 'nt':
+        print('Press Enter to continue...')
+        try:
+            raw_input() # Python 2
+        except:
+            input() # Python 3
+
+if __name__ == '__main__':
+    main()