TCs: fix div-by-zero on elapsed times (appveyor CPU is fast!)

Author: ankostis

Diff for: gitdb/test/performance/test_pack.py

@@ -36,7 +36,7 @@ def test_pack_random_access(self):
         sha_list = list(pdb.sha_iter())
         elapsed = time() - st
         ns = len(sha_list)
-        print("PDB: looked up %i shas by index in %f s ( %f shas/s )" % (ns, elapsed, ns / elapsed), file=sys.stderr)
+        print("PDB: looked up %i shas by index in %f s ( %f shas/s )" % (ns, elapsed, ns / (elapsed or 1)), file=sys.stderr)
 
         # sha lookup: best-case and worst case access
         pdb_pack_info = pdb._pack_info
@@ -51,7 +51,7 @@ def test_pack_random_access(self):
         del(pdb._entities)
         pdb.entities()
         print("PDB: looked up %i sha in %i packs in %f s ( %f shas/s )" %
-              (ns, len(pdb.entities()), elapsed, ns / elapsed), file=sys.stderr)
+              (ns, len(pdb.entities()), elapsed, ns / (elapsed or 1)), file=sys.stderr)
         # END for each random mode
 
         # query info and streams only
@@ -62,7 +62,7 @@ def test_pack_random_access(self):
                 pdb_fun(sha)
             elapsed = time() - st
             print("PDB: Obtained %i object %s by sha in %f s ( %f items/s )" %
-                  (max_items, pdb_fun.__name__.upper(), elapsed, max_items / elapsed), file=sys.stderr)
+                  (max_items, pdb_fun.__name__.upper(), elapsed, max_items / (elapsed or 1)), file=sys.stderr)
         # END for each function
 
         # retrieve stream and read all
@@ -78,7 +78,7 @@ def test_pack_random_access(self):
         elapsed = time() - st
         total_kib = total_size / 1000
         print("PDB: Obtained %i streams by sha and read all bytes totallying %i KiB ( %f KiB / s ) in %f s ( %f streams/s )" %
-              (max_items, total_kib, total_kib / elapsed, elapsed, max_items / elapsed), file=sys.stderr)
+              (max_items, total_kib, total_kib / (elapsed or 1), elapsed, max_items / (elapsed or 1)), file=sys.stderr)
 
     @skip_on_travis_ci
     def test_loose_correctness(self):
@@ -129,5 +129,5 @@ def test_correctness(self):
             # END for each entity
             elapsed = time() - st
             print("PDB: verified %i objects (crc=%i) in %f s ( %f objects/s )" %
-                  (count, crc, elapsed, count / elapsed), file=sys.stderr)
+                  (count, crc, elapsed, count / (elapsed or 1)), file=sys.stderr)
         # END for each verify mode

Diff for: gitdb/test/performance/test_pack_streaming.py

@@ -52,14 +52,14 @@ def test_pack_writing(self):
         # END gather objects for pack-writing
         elapsed = time() - st
         print("PDB Streaming: Got %i streams by sha in in %f s ( %f streams/s )" %
-              (ni, elapsed, ni / elapsed), file=sys.stderr)
+              (ni, elapsed, ni / (elapsed or 1)), file=sys.stderr)
 
         st = time()
         PackEntity.write_pack((pdb.stream(sha) for sha in pdb.sha_iter()), ostream.write, object_count=ni)
         elapsed = time() - st
         total_kb = ostream.bytes_written() / 1000
         print(sys.stderr, "PDB Streaming: Wrote pack of size %i kb in %f s (%f kb/s)" %
-              (total_kb, elapsed, total_kb / elapsed), sys.stderr)
+              (total_kb, elapsed, total_kb / (elapsed or 1)), sys.stderr)
 
     @skip_on_travis_ci
     def test_stream_reading(self):
@@ -82,4 +82,4 @@ def test_stream_reading(self):
         elapsed = time() - st
         total_kib = total_size / 1000
         print(sys.stderr, "PDB Streaming: Got %i streams by sha and read all bytes totallying %i KiB ( %f KiB / s ) in %f s ( %f streams/s )" %
-              (ni, total_kib, total_kib / elapsed, elapsed, ni / elapsed), sys.stderr)
+              (ni, total_kib, total_kib / (elapsed or 1), elapsed, ni / (elapsed or 1)), sys.stderr)

Diff for: gitdb/test/performance/test_stream.py

@@ -70,7 +70,7 @@ def test_large_data_streaming(self, path):
 
             size_kib = size / 1000
             print("Added %i KiB (filesize = %i KiB) of %s data to loose odb in %f s ( %f Write KiB / s)" %
-                  (size_kib, fsize_kib, desc, elapsed_add, size_kib / elapsed_add), file=sys.stderr)
+                  (size_kib, fsize_kib, desc, elapsed_add, size_kib / (elapsed_add or 1)), file=sys.stderr)
 
             # reading all at once
             st = time()
@@ -81,7 +81,7 @@ def test_large_data_streaming(self, path):
             stream.seek(0)
             assert shadata == stream.getvalue()
             print("Read %i KiB of %s data at once from loose odb in %f s ( %f Read KiB / s)" %
-                  (size_kib, desc, elapsed_readall, size_kib / elapsed_readall), file=sys.stderr)
+                  (size_kib, desc, elapsed_readall, size_kib / (elapsed_readall or 1)), file=sys.stderr)
 
             # reading in chunks of 1 MiB
             cs = 512 * 1000
@@ -101,7 +101,7 @@ def test_large_data_streaming(self, path):
 
             cs_kib = cs / 1000
             print("Read %i KiB of %s data in %i KiB chunks from loose odb in %f s ( %f Read KiB / s)" %
-                  (size_kib, desc, cs_kib, elapsed_readchunks, size_kib / elapsed_readchunks), file=sys.stderr)
+                  (size_kib, desc, cs_kib, elapsed_readchunks, size_kib / (elapsed_readchunks or 1)), file=sys.stderr)
 
             # del db file so we keep something to do
             os.remove(db_file)