1 files changed, 286 insertions, 0 deletions
diff --git a/t/t1506-rev-parse-diagnosis.sh b/t/t1506-rev-parse-diagnosis.sh
new file mode 100755
index 0000000..18688ca
--- /dev/null
+++ b/t/t1506-rev-parse-diagnosis.sh
@@ -0,0 +1,286 @@
+#!/bin/sh
+
+test_description='test git rev-parse diagnosis for invalid argument'
+
+exec </dev/null
+
+GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
+export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
+
+TEST_PASSES_SANITIZE_LEAK=true
+. ./test-lib.sh
+
+test_did_you_mean ()
+{
+	cat >expected <<-EOF &&
+	fatal: path '$2$3' $4, but not ${5:-$SQ$3$SQ}
+	hint: Did you mean '$1:$2$3'${2:+ aka $SQ$1:./$3$SQ}?
+	EOF
+	test_cmp expected error
+}
+
+HASH_file=
+
+test_expect_success 'set up basic repo' '
+	echo one > file.txt &&
+	mkdir subdir &&
+	echo two > subdir/file.txt &&
+	echo three > subdir/file2.txt &&
+	git add . &&
+	git commit -m init &&
+	echo four > index-only.txt &&
+	git add index-only.txt &&
+	echo five > disk-only.txt
+'
+
+test_expect_success 'correct file objects' '
+	HASH_file=$(git rev-parse HEAD:file.txt) &&
+	git rev-parse HEAD:subdir/file.txt &&
+	git rev-parse :index-only.txt &&
+	(cd subdir &&
+	 git rev-parse HEAD:subdir/file2.txt &&
+	 test $HASH_file = $(git rev-parse HEAD:file.txt) &&
+	 test $HASH_file = $(git rev-parse :file.txt) &&
+	 test $HASH_file = $(git rev-parse :0:file.txt) )
+'
+
+test_expect_success 'correct relative file objects (0)' '
+	git rev-parse :file.txt >expected &&
+	git rev-parse :./file.txt >result &&
+	test_cmp expected result &&
+	git rev-parse :0:./file.txt >result &&
+	test_cmp expected result
+'
+
+test_expect_success 'correct relative file objects (1)' '
+	git rev-parse HEAD:file.txt >expected &&
+	git rev-parse HEAD:./file.txt >result &&
+	test_cmp expected result
+'
+
+test_expect_success 'correct relative file objects (2)' '
+	(
+		cd subdir &&
+		git rev-parse HEAD:../file.txt >result &&
+		test_cmp ../expected result
+	)
+'
+
+test_expect_success 'correct relative file objects (3)' '
+	(
+		cd subdir &&
+		git rev-parse HEAD:../subdir/../file.txt >result &&
+		test_cmp ../expected result
+	)
+'
+
+test_expect_success 'correct relative file objects (4)' '
+	git rev-parse HEAD:subdir/file.txt >expected &&
+	(
+		cd subdir &&
+		git rev-parse HEAD:./file.txt >result &&
+		test_cmp ../expected result
+	)
+'
+
+test_expect_success 'correct relative file objects (5)' '
+	git rev-parse :subdir/file.txt >expected &&
+	(
+		cd subdir &&
+		git rev-parse :./file.txt >result &&
+		test_cmp ../expected result &&
+		git rev-parse :0:./file.txt >result &&
+		test_cmp ../expected result
+	)
+'
+
+test_expect_success 'correct relative file objects (6)' '
+	git rev-parse :file.txt >expected &&
+	(
+		cd subdir &&
+		git rev-parse :../file.txt >result &&
+		test_cmp ../expected result &&
+		git rev-parse :0:../file.txt >result &&
+		test_cmp ../expected result
+	)
+'
+
+test_expect_success 'incorrect revision id' '
+	test_must_fail git rev-parse foobar:file.txt 2>error &&
+	test_i18ngrep "invalid object name .foobar." error &&
+	test_must_fail git rev-parse foobar 2>error &&
+	test_i18ngrep "unknown revision or path not in the working tree." error
+'
+
+test_expect_success 'incorrect file in sha1:path' '
+	test_must_fail git rev-parse HEAD:nothing.txt 2>error &&
+	test_i18ngrep "path .nothing.txt. does not exist in .HEAD." error &&
+	test_must_fail git rev-parse HEAD:index-only.txt 2>error &&
+	test_i18ngrep "path .index-only.txt. exists on disk, but not in .HEAD." error &&
+	(cd subdir &&
+	 test_must_fail git rev-parse HEAD:file2.txt 2>error &&
+	 test_did_you_mean HEAD subdir/ file2.txt exists )
+'
+
+test_expect_success 'incorrect file in :path and :N:path' '
+	test_must_fail git rev-parse :nothing.txt 2>error &&
+	test_i18ngrep "path .nothing.txt. does not exist (neither on disk nor in the index)" error &&
+	test_must_fail git rev-parse :1:nothing.txt 2>error &&
+	test_i18ngrep "path .nothing.txt. does not exist (neither on disk nor in the index)" error &&
+	test_must_fail git rev-parse :1:file.txt 2>error &&
+	test_did_you_mean ":0" "" file.txt "is in the index" "at stage 1" &&
+	(cd subdir &&
+	 test_must_fail git rev-parse :1:file.txt 2>error &&
+	 test_did_you_mean ":0" "" file.txt "is in the index" "at stage 1" &&
+	 test_must_fail git rev-parse :file2.txt 2>error &&
+	 test_did_you_mean ":0" subdir/ file2.txt "is in the index" &&
+	 test_must_fail git rev-parse :2:file2.txt 2>error &&
+	 test_did_you_mean :0 subdir/ file2.txt "is in the index") &&
+	test_must_fail git rev-parse :disk-only.txt 2>error &&
+	test_i18ngrep "path .disk-only.txt. exists on disk, but not in the index" error
+'
+
+test_expect_success 'invalid @{n} reference' '
+	test_must_fail git rev-parse main@{99999} >output 2>error &&
+	test_must_be_empty output &&
+	test_i18ngrep "log for [^ ]* only has [0-9][0-9]* entries" error  &&
+	test_must_fail git rev-parse --verify main@{99999} >output 2>error &&
+	test_must_be_empty output &&
+	test_i18ngrep "log for [^ ]* only has [0-9][0-9]* entries" error
+'
+
+test_expect_success 'relative path not found' '
+	(
+		cd subdir &&
+		test_must_fail git rev-parse HEAD:./nonexistent.txt 2>error &&
+		test_i18ngrep subdir/nonexistent.txt error
+	)
+'
+
+test_expect_success 'relative path outside worktree' '
+	test_must_fail git rev-parse HEAD:../file.txt >output 2>error &&
+	test_must_be_empty output &&
+	test_i18ngrep "outside repository" error
+'
+
+test_expect_success 'relative path when cwd is outside worktree' '
+	test_must_fail git --git-dir=.git --work-tree=subdir rev-parse HEAD:./file.txt >output 2>error &&
+	test_must_be_empty output &&
+	test_i18ngrep "relative path syntax can.t be used outside working tree" error
+'
+
+test_expect_success '<commit>:file correctly diagnosed after a pathname' '
+	test_must_fail git rev-parse file.txt HEAD:file.txt 1>actual 2>error &&
+	test_i18ngrep ! "exists on disk" error &&
+	test_i18ngrep "no such path in the working tree" error &&
+	cat >expect <<-\EOF &&
+	file.txt
+	HEAD:file.txt
+	EOF
+	test_cmp expect actual
+'
+
+test_expect_success 'dotdot is not an empty set' '
+	( H=$(git rev-parse HEAD) && echo $H && echo ^$H ) >expect &&
+
+	git rev-parse HEAD.. >actual &&
+	test_cmp expect actual &&
+
+	git rev-parse ..HEAD >actual &&
+	test_cmp expect actual &&
+
+	echo .. >expect &&
+	git rev-parse .. >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'dotdot does not peel endpoints' '
+	git tag -a -m "annote" annotated HEAD &&
+	A=$(git rev-parse annotated) &&
+	H=$(git rev-parse annotated^0) &&
+	{
+		echo $A && echo ^$A
+	} >expect-with-two-dots &&
+	{
+		echo $A && echo $A && echo ^$H
+	} >expect-with-merge-base &&
+
+	git rev-parse annotated..annotated >actual-with-two-dots &&
+	test_cmp expect-with-two-dots actual-with-two-dots &&
+
+	git rev-parse annotated...annotated >actual-with-merge-base &&
+	test_cmp expect-with-merge-base actual-with-merge-base
+'
+
+test_expect_success 'arg before dashdash must be a revision (missing)' '
+	test_must_fail git rev-parse foobar -- 2>stderr &&
+	test_i18ngrep "bad revision" stderr
+'
+
+test_expect_success 'arg before dashdash must be a revision (file)' '
+	>foobar &&
+	test_must_fail git rev-parse foobar -- 2>stderr &&
+	test_i18ngrep "bad revision" stderr
+'
+
+test_expect_success 'arg before dashdash must be a revision (ambiguous)' '
+	>foobar &&
+	git update-ref refs/heads/foobar HEAD &&
+	{
+		# we do not want to use rev-parse here, because
+		# we are testing it
+		git show-ref -s refs/heads/foobar &&
+		printf "%s\n" --
+	} >expect &&
+	git rev-parse foobar -- >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'reject Nth parent if N is too high' '
+	test_must_fail git rev-parse HEAD^100000000000000000000000000000000
+'
+
+test_expect_success 'reject Nth ancestor if N is too high' '
+	test_must_fail git rev-parse HEAD~100000000000000000000000000000000
+'
+
+test_expect_success 'pathspecs with wildcards are not ambiguous' '
+	echo "*.c" >expect &&
+	git rev-parse "*.c" >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'backslash does not trigger wildcard rule' '
+	test_must_fail git rev-parse "foo\\bar"
+'
+
+test_expect_success 'escaped char does not trigger wildcard rule' '
+	test_must_fail git rev-parse "foo\\*bar"
+'
+
+test_expect_success 'arg after dashdash not interpreted as option' '
+	cat >expect <<-\EOF &&
+	--
+	--local-env-vars
+	EOF
+	git rev-parse -- --local-env-vars >actual &&
+	test_cmp expect actual
+'
+
+test_expect_success 'arg after end-of-options not interpreted as option' '
+	test_must_fail git rev-parse --end-of-options --not-real -- 2>err &&
+	test_i18ngrep bad.revision.*--not-real err
+'
+
+test_expect_success 'end-of-options still allows --' '
+	cat >expect <<-EOF &&
+	--end-of-options
+	$(git rev-parse --verify HEAD)
+	--
+	path
+	EOF
+	git rev-parse --end-of-options HEAD -- path >actual &&
+	test_cmp expect actual
+'
+
+test_done