std: Fix a failing fs test on Windows
#63109
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In testing 4-core machines on Azure the `realpath_works_tricky` test in
the standard library is failing with "The directory name is invalid". In
attempting to debug this test I was able to reproduce the failure
locally on my machine, and after inspecing the test it I believe is
exploiting Unix-specific behavior that seems to only sometimes work on
Windows. Specifically the test basically executes:
mkdir -p a/b
mkdir -p a/d
touch a/f
ln -s a/b/c ../d/e
ln -s a/d/e ../f
and then asserts that `canonicalize("a/b/c")` and
`canonicalize("a/d/e")` are equivalent to `a/f`. On Windows however the
first symlink is a "directory symlink" and the second is a file symlink.
In both cases, though, they're pointing to files. This means that for
whatever reason locally and on the 4-core environment the call to
`canonicalize` is failing. On Azure today it seems to be passing, and
I'm not entirely sure why. I'm sort of presuming that there's some sort
of internals going on here where there's some global Windows setting
which makes symlinks behavior more unix-like and ignore the directory
hint.
In any case this should keep the test working and also fixes the test
locally for me.
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r? @bluss (rust_highfive has picked a reviewer for you, use r? to override) |
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r? @sfackler |
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Very mysterious @bors r+ rollup |
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📌 Commit 8d7fb87 has been approved by |
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Centril
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to Centril/rust
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Jul 29, 2019
…t, r=sfackler
std: Fix a failing `fs` test on Windows
In testing 4-core machines on Azure the `realpath_works_tricky` test in
the standard library is failing with "The directory name is invalid". In
attempting to debug this test I was able to reproduce the failure
locally on my machine, and after inspecing the test it I believe is
exploiting Unix-specific behavior that seems to only sometimes work on
Windows. Specifically the test basically executes:
mkdir -p a/b
mkdir -p a/d
touch a/f
ln -s a/b/c ../d/e
ln -s a/d/e ../f
and then asserts that `canonicalize("a/b/c")` and
`canonicalize("a/d/e")` are equivalent to `a/f`. On Windows however the
first symlink is a "directory symlink" and the second is a file symlink.
In both cases, though, they're pointing to files. This means that for
whatever reason locally and on the 4-core environment the call to
`canonicalize` is failing. On Azure today it seems to be passing, and
I'm not entirely sure why. I'm sort of presuming that there's some sort
of internals going on here where there's some global Windows setting
which makes symlinks behavior more unix-like and ignore the directory
hint.
In any case this should keep the test working and also fixes the test
locally for me. It's also worth pointing out that this test was made Windows compatible in rust-lang#31360, a pretty ancient PR at this point.
Centril
added a commit
to Centril/rust
that referenced
this pull request
Jul 29, 2019
…t, r=sfackler
std: Fix a failing `fs` test on Windows
In testing 4-core machines on Azure the `realpath_works_tricky` test in
the standard library is failing with "The directory name is invalid". In
attempting to debug this test I was able to reproduce the failure
locally on my machine, and after inspecing the test it I believe is
exploiting Unix-specific behavior that seems to only sometimes work on
Windows. Specifically the test basically executes:
mkdir -p a/b
mkdir -p a/d
touch a/f
ln -s a/b/c ../d/e
ln -s a/d/e ../f
and then asserts that `canonicalize("a/b/c")` and
`canonicalize("a/d/e")` are equivalent to `a/f`. On Windows however the
first symlink is a "directory symlink" and the second is a file symlink.
In both cases, though, they're pointing to files. This means that for
whatever reason locally and on the 4-core environment the call to
`canonicalize` is failing. On Azure today it seems to be passing, and
I'm not entirely sure why. I'm sort of presuming that there's some sort
of internals going on here where there's some global Windows setting
which makes symlinks behavior more unix-like and ignore the directory
hint.
In any case this should keep the test working and also fixes the test
locally for me. It's also worth pointing out that this test was made Windows compatible in rust-lang#31360, a pretty ancient PR at this point.
Centril
added a commit
to Centril/rust
that referenced
this pull request
Jul 30, 2019
…t, r=sfackler
std: Fix a failing `fs` test on Windows
In testing 4-core machines on Azure the `realpath_works_tricky` test in
the standard library is failing with "The directory name is invalid". In
attempting to debug this test I was able to reproduce the failure
locally on my machine, and after inspecing the test it I believe is
exploiting Unix-specific behavior that seems to only sometimes work on
Windows. Specifically the test basically executes:
mkdir -p a/b
mkdir -p a/d
touch a/f
ln -s a/b/c ../d/e
ln -s a/d/e ../f
and then asserts that `canonicalize("a/b/c")` and
`canonicalize("a/d/e")` are equivalent to `a/f`. On Windows however the
first symlink is a "directory symlink" and the second is a file symlink.
In both cases, though, they're pointing to files. This means that for
whatever reason locally and on the 4-core environment the call to
`canonicalize` is failing. On Azure today it seems to be passing, and
I'm not entirely sure why. I'm sort of presuming that there's some sort
of internals going on here where there's some global Windows setting
which makes symlinks behavior more unix-like and ignore the directory
hint.
In any case this should keep the test working and also fixes the test
locally for me. It's also worth pointing out that this test was made Windows compatible in rust-lang#31360, a pretty ancient PR at this point.
Centril
added a commit
to Centril/rust
that referenced
this pull request
Jul 30, 2019
…t, r=sfackler
std: Fix a failing `fs` test on Windows
In testing 4-core machines on Azure the `realpath_works_tricky` test in
the standard library is failing with "The directory name is invalid". In
attempting to debug this test I was able to reproduce the failure
locally on my machine, and after inspecing the test it I believe is
exploiting Unix-specific behavior that seems to only sometimes work on
Windows. Specifically the test basically executes:
mkdir -p a/b
mkdir -p a/d
touch a/f
ln -s a/b/c ../d/e
ln -s a/d/e ../f
and then asserts that `canonicalize("a/b/c")` and
`canonicalize("a/d/e")` are equivalent to `a/f`. On Windows however the
first symlink is a "directory symlink" and the second is a file symlink.
In both cases, though, they're pointing to files. This means that for
whatever reason locally and on the 4-core environment the call to
`canonicalize` is failing. On Azure today it seems to be passing, and
I'm not entirely sure why. I'm sort of presuming that there's some sort
of internals going on here where there's some global Windows setting
which makes symlinks behavior more unix-like and ignore the directory
hint.
In any case this should keep the test working and also fixes the test
locally for me. It's also worth pointing out that this test was made Windows compatible in rust-lang#31360, a pretty ancient PR at this point.
bors
added a commit
that referenced
this pull request
Jul 30, 2019
Rollup of 12 pull requests Successful merges: - #61965 (Remove mentions of removed `offset_to` method from `align_offset` docs) - #62928 (Syntax: Recover on `for ( $pat in $expr ) $block`) - #63000 (Impl Debug for Chars) - #63083 (Make generic parameters always use modern hygiene) - #63087 (Add very simple edition check to tidy.) - #63093 (Properly check the defining scope of existential types) - #63096 (Add tests for some `existential_type` ICEs) - #63099 (vxworks: Remove Linux-specific comments.) - #63106 (ci: Skip installing SWIG/xz on OSX ) - #63108 (Add links to None in Option doc) - #63109 (std: Fix a failing `fs` test on Windows) - #63111 (Add syntactic and semantic tests for rest patterns, i.e. `..`) Failed merges: r? @ghost
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In testing 4-core machines on Azure the
realpath_works_trickytest inthe standard library is failing with "The directory name is invalid". In
attempting to debug this test I was able to reproduce the failure
locally on my machine, and after inspecing the test it I believe is
exploiting Unix-specific behavior that seems to only sometimes work on
Windows. Specifically the test basically executes:
and then asserts that
canonicalize("a/b/c")andcanonicalize("a/d/e")are equivalent toa/f. On Windows however thefirst symlink is a "directory symlink" and the second is a file symlink.
In both cases, though, they're pointing to files. This means that for
whatever reason locally and on the 4-core environment the call to
canonicalizeis failing. On Azure today it seems to be passing, andI'm not entirely sure why. I'm sort of presuming that there's some sort
of internals going on here where there's some global Windows setting
which makes symlinks behavior more unix-like and ignore the directory
hint.
In any case this should keep the test working and also fixes the test
locally for me. It's also worth pointing out that this test was made Windows compatible in #31360, a pretty ancient PR at this point.