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[PATCH 00/10] Hash-independent tests (part 3)

This is next in the series of improvements to make tests

Introduced here is a test helper, test_translate, that allows lookups in
tests based on the hash algorithm in use.  Alternatives are either
specified inline (the former for SHA-1, the latter for NewHash), or
(more commonly) from a file based on a key.  Some basic examples of
translations are provided and used throughout the tests.

The ultimate idea is that tests can simply drop a file into the
translation directory and use their own test-specific translations if

This series (and subsequent series) attempt to standardize slightly on
our use of invalid object IDs in tests.  Since the actual invalid IDs
aren't usually very important, the translations I've made using the
tables aren't necessarily entirely faithful: we will sometimes use
different SHA-1 object IDs than before, but we substitute only invalid
object IDs for different invalid ones.

It's likely in the future that test_translate will support additional
options depending on whether we want input, output, or internal formats.

I had mentioned in a previous comment that a given test would be
included in "the next series" (this one), but I redid the series and
decided to split it into smaller pieces, so it isn't included.  Sorry.

Comments on any aspect of the series are welcome, but thoughts on design
and naming would be especially valuable.

brian m. carlson (10):
  t: add tool to translate hash-related values
  t0000: use hash translation table
  t0002: abstract away SHA-1-specific constants
  t0027: use $ZERO_OID
  t0064: make hash size independent
  t1006: make hash size independent
  t1400: switch hard-coded object ID to variable
  t1405: make hash size independent
  t1406: make hash-size independent
  t1407: make hash size independent

 t/t0000-basic.sh               | 13 ++++-----
 t/t0002-gitfile.sh             | 26 +++++++++---------
 t/t0027-auto-crlf.sh           | 14 +++++-----
 t/t0064-sha1-array.sh          | 49 +++++++++++++++++++---------------
 t/t1006-cat-file.sh            |  4 +--
 t/t1400-update-ref.sh          |  2 +-
 t/t1405-main-ref-store.sh      |  4 +--
 t/t1406-submodule-ref-store.sh |  6 ++---
 t/t1407-worktree-ref-store.sh  |  4 +--
 t/test-lib-functions.sh        | 40 +++++++++++++++++++++++++++
 t/translate/hash-info          |  9 +++++++
 t/translate/oid                | 15 +++++++++++
 12 files changed, 129 insertions(+), 57 deletions(-)
 create mode 100644 t/translate/hash-info
 create mode 100644 t/translate/oid