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run-tests: mechanism to report exceptions during test execution...
run-tests: mechanism to report exceptions during test execution Sometimes when running tests you introduce a ton of exceptions. The most extreme example of this is running Mercurial with Python 3, which currently spews thousands of exceptions when running the test harness. This commit adds an opt-in feature to run-tests.py to aggregate exceptions encountered by `hg` when running tests. When --exceptions is used, the test harness enables the "logexceptions" extension in the test environment. This extension wraps the Mercurial function to handle exceptions and writes information about the exception to a random filename in a directory defined by the test harness via an environment variable. At the end of the test harness, these files are parsed, aggregated, and a list of all unique Mercurial frames triggering exceptions is printed in order of frequency. This feature is intended to aid Python 3 development. I've only really tested it on Python 3. There is no shortage of improvements that could be made. e.g. we could write a separate file containing the exception report - maybe even an HTML report. We also don't capture which tests demonstrate the exceptions, so there's no turnkey way to test whether a code change made an exception disappear. Perfect is the enemy of good. I think the current patch is useful enough to land. Whoever uses it can send patches to imprve its usefulness. Differential Revision: https://phab.mercurial-scm.org/D1477

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test-sparse-profiles.t
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/ tests / test-sparse-profiles.t
test sparse
$ hg init myrepo
$ cd myrepo
$ cat > .hg/hgrc <<EOF
> [extensions]
> sparse=
> purge=
> strip=
> rebase=
> EOF
Config file without [section] is rejected
$ cat > bad.sparse <<EOF
> *.html
> EOF
$ hg debugsparse --import-rules bad.sparse
abort: sparse config entry outside of section: *.html
(add an [include] or [exclude] line to declare the entry type)
[255]
$ rm bad.sparse
$ echo a > index.html
$ echo x > data.py
$ echo z > readme.txt
$ cat > webpage.sparse <<EOF
> # frontend sparse profile
> [include]
> *.html
> EOF
$ cat > backend.sparse <<EOF
> # backend sparse profile
> [include]
> *.py
> EOF
$ hg ci -Aqm 'initial'
$ hg debugsparse --include '*.sparse'
Verify enabling a single profile works
$ hg debugsparse --enable-profile webpage.sparse
$ ls
backend.sparse
index.html
webpage.sparse
Verify enabling two profiles works
$ hg debugsparse --enable-profile backend.sparse
$ ls
backend.sparse
data.py
index.html
webpage.sparse
Verify disabling a profile works
$ hg debugsparse --disable-profile webpage.sparse
$ ls
backend.sparse
data.py
webpage.sparse
Verify that a profile is updated across multiple commits
$ cat > webpage.sparse <<EOF
> # frontend sparse profile
> [include]
> *.html
> EOF
$ cat > backend.sparse <<EOF
> # backend sparse profile
> [include]
> *.py
> *.txt
> EOF
$ echo foo >> data.py
$ hg ci -m 'edit profile'
$ ls
backend.sparse
data.py
readme.txt
webpage.sparse
$ hg up -q 0
$ ls
backend.sparse
data.py
webpage.sparse
$ hg up -q 1
$ ls
backend.sparse
data.py
readme.txt
webpage.sparse
Introduce a conflicting .hgsparse change
$ hg up -q 0
$ cat > backend.sparse <<EOF
> # Different backend sparse profile
> [include]
> *.html
> EOF
$ echo bar >> data.py
$ hg ci -qAm "edit profile other"
$ ls
backend.sparse
index.html
webpage.sparse
Verify conflicting merge pulls in the conflicting changes
$ hg merge 1
temporarily included 1 file(s) in the sparse checkout for merging
merging backend.sparse
merging data.py
warning: conflicts while merging backend.sparse! (edit, then use 'hg resolve --mark')
warning: conflicts while merging data.py! (edit, then use 'hg resolve --mark')
0 files updated, 0 files merged, 0 files removed, 2 files unresolved
use 'hg resolve' to retry unresolved file merges or 'hg update -C .' to abandon
[1]
$ rm *.orig
$ ls
backend.sparse
data.py
index.html
webpage.sparse
Verify resolving the merge removes the temporarily unioned files
$ cat > backend.sparse <<EOF
> # backend sparse profile
> [include]
> *.html
> *.txt
> EOF
$ hg resolve -m backend.sparse
$ cat > data.py <<EOF
> x
> foo
> bar
> EOF
$ hg resolve -m data.py
(no more unresolved files)
$ hg ci -qAm "merge profiles"
$ ls
backend.sparse
index.html
readme.txt
webpage.sparse
$ hg cat -r . data.py
x
foo
bar
Verify stripping refreshes dirstate
$ hg strip -q -r .
$ ls
backend.sparse
index.html
webpage.sparse
Verify rebase conflicts pulls in the conflicting changes
$ hg up -q 1
$ ls
backend.sparse
data.py
readme.txt
webpage.sparse
$ hg rebase -d 2
rebasing 1:a2b1de640a62 "edit profile"
temporarily included 1 file(s) in the sparse checkout for merging
merging backend.sparse
merging data.py
warning: conflicts while merging backend.sparse! (edit, then use 'hg resolve --mark')
warning: conflicts while merging data.py! (edit, then use 'hg resolve --mark')
unresolved conflicts (see hg resolve, then hg rebase --continue)
[1]
$ rm *.orig
$ ls
backend.sparse
data.py
index.html
webpage.sparse
Verify resolving conflict removes the temporary files
$ cat > backend.sparse <<EOF
> [include]
> *.html
> *.txt
> EOF
$ hg resolve -m backend.sparse
$ cat > data.py <<EOF
> x
> foo
> bar
> EOF
$ hg resolve -m data.py
(no more unresolved files)
continue: hg rebase --continue
$ hg rebase -q --continue
$ ls
backend.sparse
index.html
readme.txt
webpage.sparse
$ hg cat -r . data.py
x
foo
bar
Test checking out a commit that does not contain the sparse profile. The
warning message can be suppressed by setting missingwarning = false in
[sparse] section of your config:
$ hg debugsparse --reset
$ hg rm *.sparse
$ hg commit -m "delete profiles"
$ hg up -q ".^"
$ hg debugsparse --enable-profile backend.sparse
$ ls
index.html
readme.txt
$ hg up tip | grep warning
warning: sparse profile 'backend.sparse' not found in rev bfcb76de99cc - ignoring it
[1]
$ ls
data.py
index.html
readme.txt
$ hg debugsparse --disable-profile backend.sparse | grep warning
warning: sparse profile 'backend.sparse' not found in rev bfcb76de99cc - ignoring it
[1]
$ cat >> .hg/hgrc <<EOF
> [sparse]
> missingwarning = false
> EOF
$ hg debugsparse --enable-profile backend.sparse
$ cd ..
#if unix-permissions
Test file permissions changing across a sparse profile change
$ hg init sparseperm
$ cd sparseperm
$ cat > .hg/hgrc <<EOF
> [extensions]
> sparse=
> EOF
$ touch a b
$ cat > .hgsparse <<EOF
> [include]
> a
> EOF
$ hg commit -Aqm 'initial'
$ chmod a+x b
$ hg commit -qm 'make executable'
$ cat >> .hgsparse <<EOF
> b
> EOF
$ hg commit -qm 'update profile'
$ hg up -q 0
$ hg debugsparse --enable-profile .hgsparse
$ hg up -q 2
$ ls -l b
-rwxr-xr-x* b (glob)
#endif