Convert test_dummy_threading and test_dbm to unittest.

Lib/test/test_dbm.py

-#! /usr/bin/env python
-"""Test script for the dbm module
-   Roger E. Masse
-"""
+from test import test_support
+import unittest
 import os
+import random
 import dbm
 from dbm import error
-from test.test_support import verbose, verify, TestSkipped, TESTFN
 
-# make filename unique to allow multiple concurrent tests
-# and to minimize the likelihood of a problem from an old file
-filename = TESTFN
-
-def cleanup():
-    for suffix in ['', '.pag', '.dir', '.db']:
-        try:
-            os.unlink(filename + suffix)
-        except OSError, (errno, strerror):
-            # if we can't delete the file because of permissions,
-            # nothing will work, so skip the test
-            if errno == 1:
-                raise TestSkipped, 'unable to remove: ' + filename + suffix
-
-def test_keys():
-    d = dbm.open(filename, 'c')
-    verify(d.keys() == [])
-    d['a'] = 'b'
-    d['12345678910'] = '019237410982340912840198242'
-    d.keys()
-    if d.has_key('a'):
-        if verbose:
-            print 'Test dbm keys: ', d.keys()
-
-    d.close()
-
-def test_modes():
-    d = dbm.open(filename, 'r')
-    d.close()
-    d = dbm.open(filename, 'rw')
-    d.close()
-    d = dbm.open(filename, 'w')
-    d.close()
-    d = dbm.open(filename, 'n')
-    d.close()
+class DbmTestCase(unittest.TestCase):
+
+    def setUp(self):
+        self.filename = test_support.TESTFN
+        self.d = dbm.open(self.filename, 'c')
+        self.d.close()
+
+    def tearDown(self):
+        for suffix in ['', '.pag', '.dir', '.db']:
+            test_support.unlink(self.filename + suffix)
+
+    def test_keys(self):
+        self.d = dbm.open(self.filename, 'c')
+        self.assert_(self.d.keys() == [])
+        self.d['a'] = 'b'
+        self.d['12345678910'] = '019237410982340912840198242'
+        self.d.keys()
+        self.assert_(self.d.has_key('a'))
+        self.d.close()
+
+    def test_modes(self):
+        for mode in ['r', 'rw', 'w', 'n']:
+            try:
+                self.d = dbm.open(self.filename, mode)
+                self.d.close()
+            except dbm.error:
+                self.fail()
 
 def test_main():
-    cleanup()
-    try:
-        test_keys()
-        test_modes()
-    except:
-        cleanup()
-        raise
-
-    cleanup()
-
-
+    test_support.run_unittest(DbmTestCase)
 
 if __name__ == '__main__':
     test_main()

Lib/test/test_dummy_threading.py

-# Very rudimentary test of threading module
-
-# Create a bunch of threads, let each do some work, wait until all are done
-
-from test.test_support import verbose
+from test import test_support
+import unittest
 import dummy_threading as _threading
 import time
 
-
-class TestThread(_threading.Thread):
-
-    def run(self):
+class DummyThreadingTestCase(unittest.TestCase):
+
+    class TestThread(_threading.Thread):
+
+        def run(self):
+            global running
+            global sema
+            global mutex
+            # Uncomment if testing another module, such as the real 'threading'
+            # module.
+            #delay = random.random() * 2
+            delay = 0
+            if test_support.verbose:
+                print 'task', self.getName(), 'will run for', delay, 'sec'
+            sema.acquire()
+            mutex.acquire()
+            running += 1
+            if test_support.verbose:
+                print running, 'tasks are running'
+            mutex.release()
+            time.sleep(delay)
+            if test_support.verbose:
+                print 'task', self.getName(), 'done'
+            mutex.acquire()
+            running -= 1
+            if test_support.verbose:
+                print self.getName(), 'is finished.', running, 'tasks are running'
+            mutex.release()
+            sema.release()
+
+    def setUp(self):
+        self.numtasks = 10
+        global sema
+        sema = _threading.BoundedSemaphore(value=3)
+        global mutex
+        mutex = _threading.RLock()
         global running
-        # Uncomment if testing another module, such as the real 'threading'
-        # module.
-        #delay = random.random() * 2
-        delay = 0
-        if verbose:
-            print 'task', self.getName(), 'will run for', delay, 'sec'
-        sema.acquire()
-        mutex.acquire()
-        running = running + 1
-        if verbose:
-            print running, 'tasks are running'
-        mutex.release()
-        time.sleep(delay)
-        if verbose:
-            print 'task', self.getName(), 'done'
-        mutex.acquire()
-        running = running - 1
-        if verbose:
-            print self.getName(), 'is finished.', running, 'tasks are running'
-        mutex.release()
-        sema.release()
-
-def starttasks():
-    for i in range(numtasks):
-        t = TestThread(name="<thread %d>"%i)
-        threads.append(t)
-        t.start()
-
+        running = 0
+        self.threads = []
+
+    def test_tasks(self):
+        for i in range(self.numtasks):
+            t = self.TestThread(name="<thread %d>"%i)
+            self.threads.append(t)
+            t.start()
+
+        if test_support.verbose:
+            print 'waiting for all tasks to complete'
+        for t in self.threads:
+            t.join()
+        if test_support.verbose:
+            print 'all tasks done'
 
 def test_main():
-    # This takes about n/3 seconds to run (about n/3 clumps of tasks, times
-    # about 1 second per clump).
-    global numtasks
-    numtasks = 10
-
-    # no more than 3 of the 10 can run at once
-    global sema
-    sema = _threading.BoundedSemaphore(value=3)
-    global mutex
-    mutex = _threading.RLock()
-    global running
-    running = 0
-
-    global threads
-    threads = []
-
-    starttasks()
-
-    if verbose:
-        print 'waiting for all tasks to complete'
-    for t in threads:
-        t.join()
-    if verbose:
-        print 'all tasks done'
-
-
+    test_support.run_unittest(DummyThreadingTestCase)
 
 if __name__ == '__main__':
     test_main()

Misc/NEWS

@@ -75,6 +75,8 @@ Library
 Tests
 -----
 
+- GHOP 290: Convert test_dbm and test_dummy_threading to unittest.
+
 - GHOP 293: Convert test_strftime, test_getargs, and test_pep247 to unittest.
 
 - Issue #2055: Convert test_fcntl to unittest.