test: update test-sparse-revlog.t output

This test is skipped unless a large artefact is pre-build. It seems like nobody
ran it in a while. Changeset 3764330f76a6 changed the expected output but
nobody noticed.

This changeset focus on the first and simpler step: putting the expected output
back to what one would get by running this test.

However this test changes highlight a couple of deeper issues:

1) Even if the revision content did not changed, a change in the delta
contained in the bundle affected the delta stored in the final revlog, changing
the test result. Since we are testing the delta computation strategy with
sparse, we should not blindly reuse the delta-base from the bundled delta.

2) A change in the format of the repository used to generate the bundle changed
the delta stored in the bundle. We should get a more stable output to avoid
future instabilities of this test.

3) The test is it not run by CI or developer.

We'll try to address all this issues in the coming changesets.

tests/artifacts/cache/big-file-churn.hg.md5

@@ -1,1 +1,1
-fe0d0bb5979de50f4fed71bb9437764d
+403f5c247ad7cf58d3fad247a6b5e731

tests/test-sparse-revlog.t

@@ -1,134 +1,134
 ====================================
 Test delta choice with sparse revlog
 ====================================
 
 Sparse-revlog usually shows the most gain on Manifest. However, it is simpler
 to general an appropriate file, so we test with a single file instead. The
 goal is to observe intermediate snapshot being created.
 
 We need a large enough file. Part of the content needs to be replaced
 repeatedly while some of it changes rarely.
 
   $ bundlepath="$TESTDIR/artifacts/cache/big-file-churn.hg"
 
   $ expectedhash=`cat "$bundlepath".md5`
   $ if [ ! -f "$bundlepath" ]; then
   >     echo 'skipped: missing artifact, run "'"$TESTDIR"'/artifacts/scripts/generate-churning-bundle.py"'
   >     exit 80
   > fi
   $ currenthash=`f -M "$bundlepath" | cut -d = -f 2`
   $ if [ "$currenthash" != "$expectedhash" ]; then
   >     echo 'skipped: outdated artifact, md5 "'"$currenthash"'" expected "'"$expectedhash"'" run "'"$TESTDIR"'/artifacts/scripts/generate-churning-bundle.py"'
   >     exit 80
   > fi
 
   $ cat >> $HGRCPATH << EOF
   > [format]
   > sparse-revlog = yes
   > maxchainlen = 15
   > [storage]
   > revlog.optimize-delta-parent-choice = yes
   > EOF
   $ hg init sparse-repo
   $ cd sparse-repo
   $ hg unbundle $bundlepath
   adding changesets
   adding manifests
   adding file changes
   added 5001 changesets with 5001 changes to 1 files (+89 heads)
   new changesets 9706f5af64f4:d9032adc8114 (5001 drafts)
   (run 'hg heads' to see heads, 'hg merge' to merge)
   $ hg up
   1 files updated, 0 files merged, 0 files removed, 0 files unresolved
   updated to "d9032adc8114: commit #5000"
   89 other heads for branch "default"
 
   $ hg log --stat -r 0:3
   changeset:   0:9706f5af64f4
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     initial commit
   
    SPARSE-REVLOG-TEST-FILE |  10500 ++++++++++++++++++++++++++++++++++++++++++++++
    1 files changed, 10500 insertions(+), 0 deletions(-)
   
   changeset:   1:724907deaa5e
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit #1
   
    SPARSE-REVLOG-TEST-FILE |  1068 +++++++++++++++++++++++-----------------------
    1 files changed, 534 insertions(+), 534 deletions(-)
   
   changeset:   2:62c41bce3e5d
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit #2
   
    SPARSE-REVLOG-TEST-FILE |  1068 +++++++++++++++++++++++-----------------------
    1 files changed, 534 insertions(+), 534 deletions(-)
   
   changeset:   3:348a9cbd6959
   user:        test
   date:        Thu Jan 01 00:00:00 1970 +0000
   summary:     commit #3
   
    SPARSE-REVLOG-TEST-FILE |  1068 +++++++++++++++++++++++-----------------------
    1 files changed, 534 insertions(+), 534 deletions(-)
   
 
   $ f -s .hg/store/data/*.d
-  .hg/store/data/_s_p_a_r_s_e-_r_e_v_l_o_g-_t_e_s_t-_f_i_l_e.d: size=63002924
+  .hg/store/data/_s_p_a_r_s_e-_r_e_v_l_o_g-_t_e_s_t-_f_i_l_e.d: size=65281524
   $ hg debugrevlog *
   format : 1
   flags  : generaldelta
   
   revisions     :     5001
       merges    :      625 (12.50%)
       normal    :     4376 (87.50%)
   revisions     :     5001
       empty     :        0 ( 0.00%)
                      text  :        0 (100.00%)
                      delta :        0 (100.00%)
-      snapshot  :      374 ( 7.48%)
+      snapshot  :      372 ( 7.44%)
         lvl-0   :              4 ( 0.08%)
-        lvl-1   :             23 ( 0.46%)
-        lvl-2   :             63 ( 1.26%)
-        lvl-3   :            118 ( 2.36%)
-        lvl-4   :            166 ( 3.32%)
-      deltas    :     4627 (92.52%)
-  revision size : 63002924
-      snapshot  :  9888099 (15.69%)
-        lvl-0   :         804262 ( 1.28%)
-        lvl-1   :        1561380 ( 2.48%)
-        lvl-2   :        2096696 ( 3.33%)
-        lvl-3   :        2749539 ( 4.36%)
-        lvl-4   :        2676222 ( 4.25%)
-      deltas    : 53114825 (84.31%)
+        lvl-1   :             25 ( 0.50%)
+        lvl-2   :             74 ( 1.48%)
+        lvl-3   :            117 ( 2.34%)
+        lvl-4   :            152 ( 3.04%)
+      deltas    :     4629 (92.56%)
+  revision size : 65281524
+      snapshot  :  9910992 (15.18%)
+        lvl-0   :         804162 ( 1.23%)
+        lvl-1   :        1816378 ( 2.78%)
+        lvl-2   :        2355855 ( 3.61%)
+        lvl-3   :        2557680 ( 3.92%)
+        lvl-4   :        2376917 ( 3.64%)
+      deltas    : 55370532 (84.82%)
   
   chunks        :     5001
       0x78 (x)  :     5001 (100.00%)
-  chunks size   : 63002924
-      0x78 (x)  : 63002924 (100.00%)
+  chunks size   : 65281524
+      0x78 (x)  : 65281524 (100.00%)
   
   avg chain length  :        9
   max chain length  :       15
-  max chain reach   : 28907121
-  compression ratio :       27
+  max chain reach   : 27873839
+  compression ratio :       26
   
   uncompressed data size (min/max/avg) : 346468 / 346472 / 346471
-  full revision size (min/max/avg)     : 201008 / 201141 / 201065
-  inter-snapshot size (min/max/avg)    : 11601 / 157413 / 24550
-      level-1   (min/max/avg)          : 13061 / 157413 / 67886
-      level-2   (min/max/avg)          : 11674 / 85631 / 33280
-      level-3   (min/max/avg)          : 11602 / 42957 / 23301
-      level-4   (min/max/avg)          : 11601 / 21475 / 16121
-  delta size (min/max/avg)             : 10649 / 105465 / 11479
+  full revision size (min/max/avg)     : 200973 / 201094 / 201040
+  inter-snapshot size (min/max/avg)    : 11586 / 170448 / 24746
+      level-1   (min/max/avg)          : 14021 / 170448 / 72655
+      level-2   (min/max/avg)          : 11616 / 81152 / 31835
+      level-3   (min/max/avg)          : 11607 / 42813 / 21860
+      level-4   (min/max/avg)          : 11586 / 21590 / 15637
+  delta size (min/max/avg)             : 10649 / 166014 / 11961
   
-  deltas against prev  : 3966 (85.71%)
-      where prev = p1  : 3922     (98.89%)
+  deltas against prev  : 3839 (82.93%)
+      where prev = p1  : 3839     (100.00%)
       where prev = p2  :    0     ( 0.00%)
-      other            :   44     ( 1.11%)
-  deltas against p1    :  611 (13.21%)
-  deltas against p2    :   50 ( 1.08%)
-  deltas against other :    0 ( 0.00%)
+      other            :    0     ( 0.00%)
+  deltas against p1    :  634 (13.70%)
+  deltas against p2    :   62 ( 1.34%)
+  deltas against other :   94 ( 2.03%)