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t1422: refactor tests to be shareable

In preparation for adding tests for the `git refs exists` command,
refactor the existing t1422 test suite to make its logic shareable.

Move the core test logic from `t1422-show-ref-exists.sh` to
`show-ref-exists-tests.sh` file. Inside this script, replace hardcoded
calls to "git show-ref --exists" with the `$git_show_ref_exists`
variable.

The original `t1422-show-ref-exists.sh` script now becomes a simple
"driver". It is responsible for setting the default value of the
variable and then sourcing the test library.

This structure follows an established pattern for sharing tests and
prepares the test suite for the `refs exists` tests to be added in a
subsequent commit.

Mentored-by: Patrick Steinhardt <ps@pks.im>
Mentored-by: shejialuo <shejialuo@gmail.com>
Signed-off-by: Meet Soni <meetsoni3017@gmail.com>
Acked-by: Patrick Steinhardt <ps@pks.im>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

authored by

Meet Soni and committed by
Junio C Hamano
01d429c7 0749b93a

+78 -75
+77
t/show-ref-exists-tests.sh
··· 1 + git_show_ref_exists=${git_show_ref_exists:-git show-ref --exists} 2 + 3 + test_expect_success setup ' 4 + test_commit --annotate A && 5 + git checkout -b side && 6 + test_commit --annotate B && 7 + git checkout main && 8 + test_commit C && 9 + git branch B A^0 10 + ' 11 + 12 + test_expect_success '--exists with existing reference' ' 13 + ${git_show_ref_exists} refs/heads/$GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME 14 + ' 15 + 16 + test_expect_success '--exists with missing reference' ' 17 + test_expect_code 2 ${git_show_ref_exists} refs/heads/does-not-exist 18 + ' 19 + 20 + test_expect_success '--exists does not use DWIM' ' 21 + test_expect_code 2 ${git_show_ref_exists} $GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME 2>err && 22 + grep "reference does not exist" err 23 + ' 24 + 25 + test_expect_success '--exists with HEAD' ' 26 + ${git_show_ref_exists} HEAD 27 + ' 28 + 29 + test_expect_success '--exists with bad reference name' ' 30 + test_when_finished "git update-ref -d refs/heads/bad...name" && 31 + new_oid=$(git rev-parse HEAD) && 32 + test-tool ref-store main update-ref msg refs/heads/bad...name $new_oid $ZERO_OID REF_SKIP_REFNAME_VERIFICATION && 33 + ${git_show_ref_exists} refs/heads/bad...name 34 + ' 35 + 36 + test_expect_success '--exists with arbitrary symref' ' 37 + test_when_finished "git symbolic-ref -d refs/symref" && 38 + git symbolic-ref refs/symref refs/heads/$GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME && 39 + ${git_show_ref_exists} refs/symref 40 + ' 41 + 42 + test_expect_success '--exists with dangling symref' ' 43 + test_when_finished "git symbolic-ref -d refs/heads/dangling" && 44 + git symbolic-ref refs/heads/dangling refs/heads/does-not-exist && 45 + ${git_show_ref_exists} refs/heads/dangling 46 + ' 47 + 48 + test_expect_success '--exists with nonexistent object ID' ' 49 + test-tool ref-store main update-ref msg refs/heads/missing-oid $(test_oid 001) $ZERO_OID REF_SKIP_OID_VERIFICATION && 50 + ${git_show_ref_exists} refs/heads/missing-oid 51 + ' 52 + 53 + test_expect_success '--exists with non-commit object' ' 54 + tree_oid=$(git rev-parse HEAD^{tree}) && 55 + test-tool ref-store main update-ref msg refs/heads/tree ${tree_oid} $ZERO_OID REF_SKIP_OID_VERIFICATION && 56 + ${git_show_ref_exists} refs/heads/tree 57 + ' 58 + 59 + test_expect_success '--exists with directory fails with generic error' ' 60 + cat >expect <<-EOF && 61 + error: reference does not exist 62 + EOF 63 + test_expect_code 2 ${git_show_ref_exists} refs/heads 2>err && 64 + test_cmp expect err 65 + ' 66 + 67 + test_expect_success '--exists with non-existent special ref' ' 68 + test_expect_code 2 ${git_show_ref_exists} FETCH_HEAD 69 + ' 70 + 71 + test_expect_success '--exists with existing special ref' ' 72 + test_when_finished "rm .git/FETCH_HEAD" && 73 + git rev-parse HEAD >.git/FETCH_HEAD && 74 + ${git_show_ref_exists} FETCH_HEAD 75 + ' 76 + 77 + test_done
+1 -75
t/t1422-show-ref-exists.sh
··· 6 6 7 7 . ./test-lib.sh 8 8 9 - test_expect_success setup ' 10 - test_commit --annotate A && 11 - git checkout -b side && 12 - test_commit --annotate B && 13 - git checkout main && 14 - test_commit C && 15 - git branch B A^0 16 - ' 17 - 18 - test_expect_success '--exists with existing reference' ' 19 - git show-ref --exists refs/heads/$GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME 20 - ' 21 - 22 - test_expect_success '--exists with missing reference' ' 23 - test_expect_code 2 git show-ref --exists refs/heads/does-not-exist 24 - ' 25 - 26 - test_expect_success '--exists does not use DWIM' ' 27 - test_expect_code 2 git show-ref --exists $GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME 2>err && 28 - grep "reference does not exist" err 29 - ' 30 - 31 - test_expect_success '--exists with HEAD' ' 32 - git show-ref --exists HEAD 33 - ' 34 - 35 - test_expect_success '--exists with bad reference name' ' 36 - test_when_finished "git update-ref -d refs/heads/bad...name" && 37 - new_oid=$(git rev-parse HEAD) && 38 - test-tool ref-store main update-ref msg refs/heads/bad...name $new_oid $ZERO_OID REF_SKIP_REFNAME_VERIFICATION && 39 - git show-ref --exists refs/heads/bad...name 40 - ' 41 - 42 - test_expect_success '--exists with arbitrary symref' ' 43 - test_when_finished "git symbolic-ref -d refs/symref" && 44 - git symbolic-ref refs/symref refs/heads/$GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME && 45 - git show-ref --exists refs/symref 46 - ' 47 - 48 - test_expect_success '--exists with dangling symref' ' 49 - test_when_finished "git symbolic-ref -d refs/heads/dangling" && 50 - git symbolic-ref refs/heads/dangling refs/heads/does-not-exist && 51 - git show-ref --exists refs/heads/dangling 52 - ' 53 - 54 - test_expect_success '--exists with nonexistent object ID' ' 55 - test-tool ref-store main update-ref msg refs/heads/missing-oid $(test_oid 001) $ZERO_OID REF_SKIP_OID_VERIFICATION && 56 - git show-ref --exists refs/heads/missing-oid 57 - ' 58 - 59 - test_expect_success '--exists with non-commit object' ' 60 - tree_oid=$(git rev-parse HEAD^{tree}) && 61 - test-tool ref-store main update-ref msg refs/heads/tree ${tree_oid} $ZERO_OID REF_SKIP_OID_VERIFICATION && 62 - git show-ref --exists refs/heads/tree 63 - ' 64 - 65 - test_expect_success '--exists with directory fails with generic error' ' 66 - cat >expect <<-EOF && 67 - error: reference does not exist 68 - EOF 69 - test_expect_code 2 git show-ref --exists refs/heads 2>err && 70 - test_cmp expect err 71 - ' 72 - 73 - test_expect_success '--exists with non-existent special ref' ' 74 - test_expect_code 2 git show-ref --exists FETCH_HEAD 75 - ' 76 - 77 - test_expect_success '--exists with existing special ref' ' 78 - test_when_finished "rm .git/FETCH_HEAD" && 79 - git rev-parse HEAD >.git/FETCH_HEAD && 80 - git show-ref --exists FETCH_HEAD 81 - ' 82 - 83 - test_done 9 + . "$TEST_DIRECTORY"/show-ref-exists-tests.sh