[PATCH v2 0/8] t: replace incorrect test_must_fail usage (part 3)

The overall scope of these patches is to replace inappropriate uses of test_must_fail. IOW, we should only allow test_must_fail to run on `git` and `test-tool`. Ultimately, we will conclude by making test_must_fail error out on non-git commands. An advance view of the final series can be found here[1].

This is the third part. It focuses on t5*.sh.

The first part can be found here[2]. The second part can be found here[3].

Changes since v1:

* Broke up long generate_references() lines for clarity in 2/8

* For-loop &&-chain and renamed variable to "ref" in 2/8

* Cleaned up commit message in 2/8

* Rewrote 4/8 with a simpler test case

[1]: (may be rebased at any time) https://github.com/Denton-L/git/tree/ready/cleanup-test-must-fail2 [2]: https://lore.kernel.org/git/cover.1576583819.git.liu.denton@gmail.com/ [3]: https://lore.kernel.org/git/cover.1577454401.git.liu.denton@gmail.com/

Denton Liu (8):
  t5512: don't use `test_must_fail test_cmp`
  t5512: stop losing git exit code in here-docs
  t5512: stop losing return codes of git commands
  t5550: simplify no matching line check
  t5607: reorder `nongit test_must_fail`
  t5612: don't use `test_must_fail test_cmp`
  t5612: stop losing return codes of git commands
  t5801: teach compare_refs() to accept !

 t/t5512-ls-remote.sh       | 80 ++++++++++++++++++++------------------
 t/t5550-http-fetch-dumb.sh |  4 +-
 t/t5607-clone-bundle.sh    |  2 +-
 t/t5612-clone-refspec.sh   | 26 ++++++-------
 t/t5801-remote-helpers.sh  | 10 ++++-
 5 files changed, 66 insertions(+), 56 deletions(-)

Range-diff against v1:
1:  3d7dc8428d = 1:  3d7dc8428d t5512: don't use `test_must_fail test_cmp`
2:  674de50db2 ! 2:  97bc46e4a9 t5512: generate references with generate_references()
    @@ Metadata
     Author: Denton Liu <liu.denton@gmail.com>
     
      ## Commit message ##
    -    t5512: generate references with generate_references()
    +    t5512: stop losing git exit code in here-docs
     
         The expected references are generated using a here-doc with some inline
    -    subshells. If one of the `git rev-parse` invocations within the
    -    subshells failed, its return code is swallowed and we won't know about
    -    it. Replace these here-docs with generate_references(), which actually
    -    reports when `git rev-parse` fails.
    +    command substitutions. If one of the `git rev-parse` invocations within
    +    the command substitutions fails, its return code is swallowed and we
    +    won't know about it. Replace these command substitutions with
    +    generate_references(), which actually reports when `git rev-parse`
    +    fails.
     
      ## t/t5512-ls-remote.sh ##
     @@ t/t5512-ls-remote.sh: test_description='git ls-remote'
    @@ t/t5512-ls-remote.sh: test_description='git ls-remote'
      . ./test-lib.sh
      
     +generate_references () {
    -+	for i
    ++	for ref
     +	do
    -+		oid=$(git rev-parse "$i") || return 1
    -+		printf '%s\t%s\n' "$oid" "$i"
    ++		oid=$(git rev-parse "$ref") &&
    ++		printf '%s\t%s\n' "$oid" "$ref" || return 1
     +	done
     +}
     +
    @@ t/t5512-ls-remote.sh: test_expect_success 'ls-remote self' '
     -	$(git rev-parse mark1.2)	refs/tags/mark1.2
     -	$(git rev-parse mark1.10)	refs/tags/mark1.10
     -	EOF
    -+	generate_references refs/tags/mark refs/tags/mark1.1 refs/tags/mark1.2 refs/tags/mark1.10 >expect &&
    ++	generate_references \
    ++		refs/tags/mark \
    ++		refs/tags/mark1.1 \
    ++		refs/tags/mark1.2 \
    ++		refs/tags/mark1.10 >expect &&
      	git ls-remote --sort="version:refname" --tags self >actual &&
      	test_cmp expect actual
      '
    @@ t/t5512-ls-remote.sh: test_expect_success 'ls-remote self' '
     -	$(git rev-parse mark1.1)	refs/tags/mark1.1
     -	$(git rev-parse mark)	refs/tags/mark
     -	EOF
    -+	generate_references refs/tags/mark1.10 refs/tags/mark1.2 refs/tags/mark1.1 refs/tags/mark >expect &&
    ++	generate_references \
    ++		refs/tags/mark1.10 \
    ++		refs/tags/mark1.2 \
    ++		refs/tags/mark1.1 \
    ++		refs/tags/mark >expect &&
      	git ls-remote --sort="-version:refname" --tags self >actual &&
      	test_cmp expect actual
      '
    @@ t/t5512-ls-remote.sh: test_expect_success 'ls-remote self' '
     -	$(git rev-parse mark1.1)	refs/tags/mark1.1
     -	$(git rev-parse mark)	refs/tags/mark
     -	EOF
    -+	generate_references refs/tags/mark1.2 refs/tags/mark1.10 refs/tags/mark1.1 refs/tags/mark >expect &&
    ++	generate_references \
    ++		refs/tags/mark1.2 \
    ++		refs/tags/mark1.10 \
    ++		refs/tags/mark1.1 \
    ++		refs/tags/mark >expect &&
      	git ls-remote --sort="-refname" --tags self >actual &&
      	test_cmp expect actual
      '
    @@ t/t5512-ls-remote.sh: test_expect_success 'protocol v2 supports hiderefs' '
     -	$(git rev-parse refs/tags/mark1.2)	refs/tags/mark1.2
     -	EOF
     +	echo "ref: refs/heads/master	HEAD" >expect &&
    -+	generate_references HEAD \
    ++	generate_references \
    ++		HEAD \
     +		refs/heads/master >>expect &&
     +	oid=$(git rev-parse HEAD) &&
     +	echo "$oid	refs/remotes/origin/HEAD" >>expect &&
    -+	generate_references refs/remotes/origin/master \
    ++	generate_references \
    ++	refs/remotes/origin/master \
     +		refs/tags/mark \
     +		refs/tags/mark1.1 \
     +		refs/tags/mark1.10 \
3:  b3addeb985 = 3:  986ba1dd39 t5512: stop losing return codes of git commands
4:  68c911e29b < -:  ---------- t5550: remove use of `test_might_fail grep`
-:  ---------- > 4:  53e64e7077 t5550: simplify no matching line check
5:  4253f51fea = 5:  4955b701e1 t5607: reorder `nongit test_must_fail`
6:  2bac5f4a29 = 6:  a3d9d3673b t5612: don't use `test_must_fail test_cmp`
7:  b490ccace0 = 7:  bc0e90d5ba t5612: stop losing return codes of git commands
8:  b51f97f6ae = 8:  6a9d3cef2a t5801: teach compare_refs() to accept !