.

wcfs/wcfs_test.py

@@ -1211,6 +1211,7 @@ def test_wcfs():
             wl.close()
     """
 
+    # XXX move before setup watch?
     print('\n\n\n\nWATCH+COMMIT\n\n\n\n')
 
     # watched + commit -> read -> receive pin messages; read is stuck until pins are acknowledged
@@ -1221,6 +1222,10 @@ def test_wcfs():
     at4 = t.commit()
     f.assertCache([1,1,0,1,0,0])                # FIXME a must be invalidated - see δbtree ^^^
 
+    t.dump_history()
+    return
+
+
     f.assertBlk(0, '',   {wl: {}})  # XXX 0, {0, at3} after δbtree works
     f.assertBlk(1, '',   {wl: {}})
     f.assertBlk(2, '4c', {wl: {2: at3}})
@@ -1230,12 +1235,11 @@ def test_wcfs():
     f.assertBlk(5, '4f', {wl: {5: at0}})    # XXX at0 -> ø  XXX also triggers access to #4 ?
 
 
-    # XXX watch "-" -> watch no longer notified
-    # XXX close     -> watch no longer notified
+    # XXX wlink close   -> watch no longer notified
 
-    # XXX watch with at="-" -> stop watching
-    # XXX watch for 2 files via single watch open
+    # XXX watch with at="-" -> watch no longer notified
     # XXX 2 (or more) opened watch for 1 file at the same time
+    # XXX watch for 2 files via single watch open
 
     wl.close()
 
@@ -1310,3 +1314,26 @@ def test_tidtime_notrough():
     for i in range(10):
         at = t.commit()
         assert tidtime(at) > tidtime(atprev)
+
+
+
+# dump_history prints change history in tabular form.
+# the output is useful to get overview of how file(s) are changed in tests.
+@func(tDB)
+def dump_history(t):
+    print('>>> Change history by file:\n')
+    for zf in t.zfiles():
+        print('f<%s>:' % h(zf._p_oid))
+        for dF in t.dFtail:
+            df = dF.byfile.get(zf)
+            emitv = []
+            if df is not None:
+                dblk = set(df.ddata.keys())
+                for blk in range(max(dblk)+1):
+                    if blk in dblk:
+                        emitv.append('%d' % blk)
+                    else:
+                        emitv.append(' ')
+
+            print('\t%s\t%s' % (t.hat(dF.rev), ' '.join(emitv)))
+    print()