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progress: demonstrate non-linear progress has a bad ETA experience
authorJun Wu <quark@fb.com>
Tue, 26 Sep 2017 12:48:15 -0700
changeset 34312 d64c2c050b54
parent 34311 1826d695ad58
child 34313 f428c347d32b
progress: demonstrate non-linear progress has a bad ETA experience Previously, the ETA and speed assumes the progress is linear. Often, due to network or other issues, it could be fast for the most time, and suddenly slow down: [====================================================> ] \___________________________________________/\______/ very fast suddenly much slower This patch adds a test demonstrating the ETA could be way off in those cases. Differential Revision: https://phab.mercurial-scm.org/D819
tests/test-progress.t file | annotate | diff | comparison | revisions 
--- a/tests/test-progress.t	Thu Sep 21 15:58:44 2017 +0530
+++ b/tests/test-progress.t	Tue Sep 26 12:48:15 2017 -0700
@@ -192,13 +192,15 @@
   > class mocktime(object):
   >     def __init__(self, increment):
   >         self.time = 0
-  >         self.increment = increment
+  >         self.increment = [int(s) for s in increment.split()]
+  >         self.pos = 0
   >     def __call__(self):
-  >         self.time += self.increment
+  >         self.time += self.increment[self.pos % len(self.increment)]
+  >         self.pos += 1
   >         return self.time
   > 
   > def uisetup(ui):
-  >     time.time = mocktime(int(os.environ.get('MOCKTIME', '11')))
+  >     time.time = mocktime(os.environ.get('MOCKTIME', '11'))
   > EOF
 
   $ cp $HGRCPATH.orig $HGRCPATH
@@ -246,6 +248,31 @@
   loop [=============================>           ] 3/4 23w02d\r (no-eol) (esc)
                                                               \r (no-eol) (esc)
 
+Non-linear progress:
+
+  $ MOCKTIME='20 20 20 20 20 20 20 20 20 20 500 500 500 500 500 20 20 20 20 20' hg -y loop 20
+  \r (no-eol) (esc)
+  loop [=>                                      ]  1/20 6m21s\r (no-eol) (esc)
+  loop [===>                                    ]  2/20 6m01s\r (no-eol) (esc)
+  loop [=====>                                  ]  3/20 5m41s\r (no-eol) (esc)
+  loop [=======>                                ]  4/20 5m21s\r (no-eol) (esc)
+  loop [=========>                              ]  5/20 5m01s\r (no-eol) (esc)
+  loop [===========>                            ]  6/20 4m41s\r (no-eol) (esc)
+  loop [=============>                          ]  7/20 4m21s\r (no-eol) (esc)
+  loop [===============>                        ]  8/20 4m01s\r (no-eol) (esc)
+  loop [================>                      ]  9/20 13m27s\r (no-eol) (esc)
+  loop [==================>                    ] 10/20 19m21s\r (no-eol) (esc)
+  loop [====================>                  ] 11/20 22m39s\r (no-eol) (esc)
+  loop [======================>                ] 12/20 24m01s\r (no-eol) (esc)
+  loop [========================>              ] 13/20 23m53s\r (no-eol) (esc)
+  loop [==========================>            ] 14/20 19m09s\r (no-eol) (esc)
+  loop [============================>          ] 15/20 15m01s\r (no-eol) (esc)
+  loop [==============================>        ] 16/20 11m21s\r (no-eol) (esc)
+  loop [=================================>      ] 17/20 8m04s\r (no-eol) (esc)
+  loop [===================================>    ] 18/20 5m07s\r (no-eol) (esc)
+  loop [=====================================>  ] 19/20 2m27s\r (no-eol) (esc)
+                                                              \r (no-eol) (esc)
+
 Time estimates should not fail when there's no end point:
   $ hg -y loop -- -4
   \r (no-eol) (esc)
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