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test for not writing the same view multiple times

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This commit is contained in:
Gregory Becker 2023-03-30 16:16:45 -07:00
parent f4865334ae
commit 8ce1d9c05a
1 changed files with 29 additions and 0 deletions
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29
lib/spack/spack/test/cmd/env.py
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@ -3350,3 +3350,32 @@ def raises(*args, **kwargs):
if update_method == "symlink":
link = os.path.join(str(tmpdir), "._root", "._tmp_symlink")
assert not os.path.lexists(link)
@pytest.mark.parametrize("update_method", ["symlink", "exchange"])
def test_view_update_unnecessary(update_method, tmpdir, install_mockery, mock_fetch, monkeypatch):
if update_method == "exchange" and not supports_renameat2:
pytest.skip("Testing on an OS that does not support the exchange update method")
root = str(tmpdir.join("root"))
view = ev.environment.ViewDescriptor(
base_path=str(tmpdir), root=root, update_method=update_method
)
libelf = spack.spec.Spec("libelf").concretized()
install("libelf")
libdwarf = spack.spec.Spec("libdwarf").concretized()
install("libdwarf")
# Ensure multiple previous views around
view.regenerate([libelf])
view.regenerate([libelf, libdwarf])
# monkeypatch so that any attempt to actually regenerate the view fails
def raises(*args, **kwargs):
raise AssertionError
monkeypatch.setattr(view, "view", raises)
view.regenerate([libelf, libdwarf])
with pytest.raises(AssertionError):
view.regenerate([libelf])