tests: add tests and document expectations from visit_children_set in rust
The tests this patch are adding have the form of formal spec in
invariants::visit_children_set::holds,
and then a series of checks that all examples must satisfy this
formal spec.
I tried to make the spec consistent with how this function is used
and how it was originally conceived. This is in conflict with how it's
documented in Rust. Some of the implementations also fail to implement
this spec, which leads to bugs, in particular when complicated patterns
are used with `hg status`.
Setup
$ PYTHONPATH=$TESTDIR/..:$PYTHONPATH
$ export PYTHONPATH
$ cat > $TESTTMP/pretxnchangegroup.sh << EOF
> #!/bin/sh
> env | grep -E "^HG_USERVAR_(DEBUG|BYPASS_REVIEW)" | sort
> exit 0
> EOF
$ cat >> $HGRCPATH << EOF
> [hooks]
> pretxnchangegroup = sh $TESTTMP/pretxnchangegroup.sh
> EOF
$ hg init repo
$ hg clone -q repo child
$ cd child
Test pushing vars to repo with pushvars.server not set
$ echo b > a
$ hg commit -Aqm a
$ hg push --pushvars "DEBUG=1" --pushvars "BYPASS_REVIEW=true"
pushing to $TESTTMP/repo
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 1 changes to 1 files
Setting pushvars.sever = true and then pushing.
$ echo [push] >> $HGRCPATH
$ echo "pushvars.server = true" >> $HGRCPATH
$ echo b >> a
$ hg commit -Aqm a
$ hg push --pushvars "DEBUG=1" --pushvars "BYPASS_REVIEW=true"
pushing to $TESTTMP/repo
searching for changes
adding changesets
adding manifests
adding file changes
HG_USERVAR_BYPASS_REVIEW=true
HG_USERVAR_DEBUG=1
added 1 changesets with 1 changes to 1 files
Test pushing var with empty right-hand side
$ echo b >> a
$ hg commit -Aqm a
$ hg push --pushvars "DEBUG="
pushing to $TESTTMP/repo
searching for changes
adding changesets
adding manifests
adding file changes
HG_USERVAR_DEBUG=
added 1 changesets with 1 changes to 1 files
Test pushing bad vars
$ echo b >> a
$ hg commit -Aqm b
$ hg push --pushvars "DEBUG"
pushing to $TESTTMP/repo
searching for changes
abort: unable to parse variable 'DEBUG', should follow 'KEY=VALUE' or 'KEY=' format
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