Add tests for .hg/branches.cache feature list.

tests/test-newbranch

@@ -1,40 +1,65 b''
 #!/bin/sh
 
 hg init t
 cd t
 hg branches
 
 echo foo > a
 hg add a
 hg ci -m "initial" -d "1000000 0"
 hg branch foo
 hg branch
 hg ci -m "add branch name" -d "1000000 0"
 hg branch bar
 hg ci -m "change branch name" -d "1000000 0"
 hg branch ""
 hg ci -m "clear branch name" -d "1000000 0"
 
 hg co foo
 hg branch
 echo bleah > a
 hg ci -m "modify a branch" -d "1000000 0"
 
 hg merge
 hg branch
 hg ci -m "merge" -d "1000000 0"
 hg log
 
 hg branches
 hg branches -q
 
 echo % test for invalid branch cache
 hg rollback
 cp .hg/branches.cache .hg/bc-invalid
 hg log -r foo
 cp .hg/bc-invalid .hg/branches.cache
 hg --debug log -r foo
 rm .hg/branches.cache
 echo corrupted > .hg/branches.cache
 hg log -qr foo
 cat .hg/branches.cache
+
+echo % test for different branch cache features
+echo '4909a3732169c0c20011c4f4b8fdff4e3d89b23f 4' > .hg/branches.cache
+hg branches --debug
+echo ' features: unnamed dummy foo bar' > .hg/branches.cache
+hg branches --debug
+echo ' features: dummy' > .hg/branches.cache
+hg branches --debug
+
+echo % test old hg reading branch cache with feature list
+python << EOF
+import binascii
+f = file('.hg/branches.cache')
+lines = f.read().split('\n')
+f.close()
+firstline = lines[0]
+last, lrev = lines.pop(0).rstrip().split(" ", 1)
+try:
+    last, lrev = binascii.unhexlify(last), int(lrev)
+except ValueError, inst:
+    if str(inst) == "invalid literal for int():%s" % firstline:
+        print "ValueError raised correctly, good."
+    else:
+        print "ValueError: %s" % inst
+EOF

tests/test-newbranch.out

@@ -1,81 +1,96 b''
 foo
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 foo
 0 files updated, 0 files merged, 0 files removed, 0 files unresolved
 (branch merge, don't forget to commit)
 foo
 changeset:   5:5f8fb06e083e
 branch:      foo
 tag:         tip
 parent:      4:4909a3732169
 parent:      3:bf1bc2f45e83
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     merge
 
 changeset:   4:4909a3732169
 branch:      foo
 parent:      1:b699b1cec9c2
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     modify a branch
 
 changeset:   3:bf1bc2f45e83
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     clear branch name
 
 changeset:   2:67ec16bde7f1
 branch:      bar
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     change branch name
 
 changeset:   1:b699b1cec9c2
 branch:      foo
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     add branch name
 
 changeset:   0:be8523e69bf8
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     initial
 
 foo                            5:5f8fb06e083e
                                3:bf1bc2f45e83
 bar                            2:67ec16bde7f1
 foo
 
 bar
 % test for invalid branch cache
 rolling back last transaction
 changeset:   4:4909a3732169
 branch:      foo
 tag:         tip
 parent:      1:b699b1cec9c2
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 summary:     modify a branch
 
 Invalid branch cache: unknown tip
 changeset:   4:4909a3732169c0c20011c4f4b8fdff4e3d89b23f
 branch:      foo
 tag:         tip
 parent:      1:b699b1cec9c2966b3700de4fef0dc123cd754c31
 parent:      -1:0000000000000000000000000000000000000000
 manifest:    4:d01b250baaa05909152f7ae07d7a649deea0df9a
 user:        test
 date:        Mon Jan 12 13:46:40 1970 +0000
 files:       a
 extra:       branch=foo
 description:
 modify a branch
 
 
 4:4909a3732169
  features: unnamed
 4909a3732169c0c20011c4f4b8fdff4e3d89b23f 4
 bf1bc2f45e834c75404d0ddab57d53beab56e2f8 
 4909a3732169c0c20011c4f4b8fdff4e3d89b23f foo
 67ec16bde7f1575d523313b9bca000f6a6f12dca bar
+% test for different branch cache features
+branch cache: no features specified
+foo                            4:4909a3732169c0c20011c4f4b8fdff4e3d89b23f
+                               3:bf1bc2f45e834c75404d0ddab57d53beab56e2f8
+bar                            2:67ec16bde7f1575d523313b9bca000f6a6f12dca
+branch cache: unknown features: dummy, foo, bar
+foo                            4:4909a3732169c0c20011c4f4b8fdff4e3d89b23f
+                               3:bf1bc2f45e834c75404d0ddab57d53beab56e2f8
+bar                            2:67ec16bde7f1575d523313b9bca000f6a6f12dca
+branch cache: missing features: unnamed
+foo                            4:4909a3732169c0c20011c4f4b8fdff4e3d89b23f
+                               3:bf1bc2f45e834c75404d0ddab57d53beab56e2f8
+bar                            2:67ec16bde7f1575d523313b9bca000f6a6f12dca
+% test old hg reading branch cache with feature list
+ValueError raised correctly, good.