simplestore: back up index when adding a revision This ensures that transaction rollback reverts the index to its previous state. This fixed a few test failures due to `hg verify` complaining about a reference to an undefined changeset revision. Differential Revision: https://phab.mercurial-scm.org/D3104

tests: disable shallow narrow tests with simple store I think these are failing because of issues with flags processing in the simple store. Let's revisit this later. Differential Revision: https://phab.mercurial-scm.org/D3103

tests: skip test-hgweb-bundle.t if we don't support bundlerepos Differential Revision: https://phab.mercurial-scm.org/D3102

tests: disable test-audit-path.t with simple store The simple store is using a primitive filename encoding scheme. Many tests in this file fail. So let's disable it for now. At some point, we should support a mode where we can run tests without fnstore or dotencode and have all tests assuming use of these filename encoding mechanisms be conditional on their usage. Differential Revision: https://phab.mercurial-scm.org/D3101

tests: port test-convert-filemap.t to simple store Differential Revision: https://phab.mercurial-scm.org/D3100

tests: disable test-static-http.t with simple store It /should/ be possible to support repos statically hosted on HTTP servers with alternate stores. But it's more trouble than it is worth right now. Let's just disable the test. Differential Revision: https://phab.mercurial-scm.org/D3099

tests: don't drop global hgrc Various tests are failing when the simple store extension is loaded because the test overrides HGRCPATH and preempts loading of extensions that were injected via --extra-config-opt. In most cases, it is acceptable to always load the global HGRCPATH. So this commit changes a couple of tests so the global HGRCPATH is still pulled in. Differential Revision: https://phab.mercurial-scm.org/D3098

verify: allow suppressing warnings about extra files The verifier issues warnings when the set of files in .hg/store doesn't align with the set of files that are advertised via repo.file(f).files() for all files seen in ctx.files() changelog traversal. This logic is reasonable for a default implementation. But some stores may have extra files whose presence is harmless. Or those stores may not have the same transaction rollback semantics that unlink files as other stores. This commit adds support for disabling the warning for orphaned files. The simple store extension has been taught to set this flag. Differential Revision: https://phab.mercurial-scm.org/D3097

tests: conditionalize tests for various repo features Working my down the long tail of test failures due to the simple store. We're now down to 38 failures with the simple store. Differential Revision: https://phab.mercurial-scm.org/D3096

simplestore: use a custom store for the simple store repo Before, we used the default store, which was based on fncache and dotencode. After attempting to port tests to work with the simple store, I realized that fncache was more trouble than it is worth. This commit implements a proper store type for the simple repo - one that isn't based off fncache. This causes a number of new test failures because of tests expecting the full fncache store filename encoding. I may extend the store format in a subsequent commit to take the filename encoding parts of fncache that we can take (basically everything except hash encoding, since that isn't reversible). But for now, let's use encoded store. As part of this, we implement proper requirements support for repos created with the simple store. This should have been done from the beginning, as a requirement is needed to lock out clients that don't understand a storage format. A new hghave feature advertising the presence of fncache in repos has been added. Most tests touching the fncache are now conditional on that feature. Other tests have added the optional repo requirement to output. Differential Revision: https://phab.mercurial-scm.org/D3095