merge(3p/git): Merge git subtree at v2.29.2 r/1890

This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb

1 files changed, 143 insertions, 34 deletions

diff --git a/third_party/git/t/t0000-basic.sh b/third_party/git/t/t0000-basic.sh
index 9ca0818cbe4c..923281af9398 100755
--- a/third_party/git/t/t0000-basic.sh
+++ b/third_party/git/t/t0000-basic.sh
@@ -20,9 +20,9 @@ modification *should* take notice and update the test vectors here.
 
 . ./test-lib.sh
 
-try_local_x () {
-	local x="local" &&
-	echo "$x"
+try_local_xy () {
+	local x="local" y="alsolocal" &&
+	echo "$x $y"
 }
 
 # Check whether the shell supports the "local" keyword. "local" is not
@@ -35,11 +35,12 @@ try_local_x () {
 # relying on "local".
 test_expect_success 'verify that the running shell supports "local"' '
 	x="notlocal" &&
-	echo "local" >expected1 &&
-	try_local_x >actual1 &&
+	y="alsonotlocal" &&
+	echo "local alsolocal" >expected1 &&
+	try_local_xy >actual1 &&
 	test_cmp expected1 actual1 &&
-	echo "notlocal" >expected2 &&
-	echo "$x" >actual2 &&
+	echo "notlocal alsonotlocal" >expected2 &&
+	echo "$x $y" >actual2 &&
 	test_cmp expected2 actual2
 '
 
@@ -76,9 +77,7 @@ _run_sub_test_lib_test_common () {
 		# the sub-test.
 		sane_unset HARNESS_ACTIVE &&
 		cd "$name" &&
-		cat >"$name.sh" <<-EOF &&
-		#!$SHELL_PATH
-
+		write_script "$name.sh" "$TEST_SHELL_PATH" <<-EOF &&
 		test_description='$descr (run in sub test-lib)
 
 		This is run in a sub test-lib so that we do not get incorrect
@@ -93,15 +92,15 @@ _run_sub_test_lib_test_common () {
 		. "\$TEST_DIRECTORY"/test-lib.sh
 		EOF
 		cat >>"$name.sh" &&
-		chmod +x "$name.sh" &&
 		export TEST_DIRECTORY &&
 		TEST_OUTPUT_DIRECTORY=$(pwd) &&
 		export TEST_OUTPUT_DIRECTORY &&
+		sane_unset GIT_TEST_FAIL_PREREQS &&
 		if test -z "$neg"
 		then
 			./"$name.sh" "$@" >out 2>err
 		else
-			!  ./"$name.sh" "$@" >out 2>err
+			! ./"$name.sh" "$@" >out 2>err
 		fi
 	)
 }
@@ -126,7 +125,7 @@ check_sub_test_lib_test () {
 
 check_sub_test_lib_test_err () {
 	name="$1" # stdin is the expected output from the test
-	# expected error output is in descriptior 3
+	# expected error output is in descriptor 3
 	(
 		cd "$name" &&
 		sed -e 's/^> //' -e 's/Z$//' >expect.out &&
@@ -154,7 +153,7 @@ test_expect_success 'pretend we have a fully passing test suite' "
 "
 
 test_expect_success 'pretend we have a partially passing test suite' "
-	test_must_fail run_sub_test_lib_test \
+	run_sub_test_lib_test_err \
 		partial-pass '2/3 tests passing' <<-\\EOF &&
 	test_expect_success 'passing test #1' 'true'
 	test_expect_success 'failing test #2' 'false'
@@ -218,7 +217,7 @@ test_expect_success 'pretend we have fixed one of two known breakages (run in su
 "
 
 test_expect_success 'pretend we have a pass, fail, and known breakage' "
-	test_must_fail run_sub_test_lib_test \
+	run_sub_test_lib_test_err \
 		mixed-results1 'mixed results #1' <<-\\EOF &&
 	test_expect_success 'passing test' 'true'
 	test_expect_success 'failing test' 'false'
@@ -237,7 +236,7 @@ test_expect_success 'pretend we have a pass, fail, and known breakage' "
 "
 
 test_expect_success 'pretend we have a mix of all possible results' "
-	test_must_fail run_sub_test_lib_test \
+	run_sub_test_lib_test_err \
 		mixed-results2 'mixed results #2' <<-\\EOF &&
 	test_expect_success 'passing test' 'true'
 	test_expect_success 'passing test' 'true'
@@ -273,24 +272,24 @@ test_expect_success 'pretend we have a mix of all possible results' "
 "
 
 test_expect_success C_LOCALE_OUTPUT 'test --verbose' '
-	test_must_fail run_sub_test_lib_test \
-		test-verbose "test verbose" --verbose <<-\EOF &&
+	run_sub_test_lib_test_err \
+		t1234-verbose "test verbose" --verbose <<-\EOF &&
 	test_expect_success "passing test" true
 	test_expect_success "test with output" "echo foo"
 	test_expect_success "failing test" false
 	test_done
 	EOF
-	mv test-verbose/out test-verbose/out+ &&
-	grep -v "^Initialized empty" test-verbose/out+ >test-verbose/out &&
-	check_sub_test_lib_test test-verbose <<-\EOF
-	> expecting success: true
+	mv t1234-verbose/out t1234-verbose/out+ &&
+	grep -v "^Initialized empty" t1234-verbose/out+ >t1234-verbose/out &&
+	check_sub_test_lib_test t1234-verbose <<-\EOF
+	> expecting success of 1234.1 '\''passing test'\'': true
 	> ok 1 - passing test
 	> Z
-	> expecting success: echo foo
+	> expecting success of 1234.2 '\''test with output'\'': echo foo
 	> foo
 	> ok 2 - test with output
 	> Z
-	> expecting success: false
+	> expecting success of 1234.3 '\''failing test'\'': false
 	> not ok 3 - failing test
 	> #	false
 	> Z
@@ -300,18 +299,18 @@ test_expect_success C_LOCALE_OUTPUT 'test --verbose' '
 '
 
 test_expect_success 'test --verbose-only' '
-	test_must_fail run_sub_test_lib_test \
-		test-verbose-only-2 "test verbose-only=2" \
+	run_sub_test_lib_test_err \
+		t2345-verbose-only-2 "test verbose-only=2" \
 		--verbose-only=2 <<-\EOF &&
 	test_expect_success "passing test" true
 	test_expect_success "test with output" "echo foo"
 	test_expect_success "failing test" false
 	test_done
 	EOF
-	check_sub_test_lib_test test-verbose-only-2 <<-\EOF
+	check_sub_test_lib_test t2345-verbose-only-2 <<-\EOF
 	> ok 1 - passing test
 	> Z
-	> expecting success: echo foo
+	> expecting success of 2345.2 '\''test with output'\'': echo foo
 	> foo
 	> ok 2 - test with output
 	> Z
@@ -391,6 +390,44 @@ test_expect_success 'GIT_SKIP_TESTS sh pattern' "
 	)
 "
 
+test_expect_success 'GIT_SKIP_TESTS entire suite' "
+	(
+		GIT_SKIP_TESTS='git' && export GIT_SKIP_TESTS &&
+		run_sub_test_lib_test git-skip-tests-entire-suite \
+			'GIT_SKIP_TESTS entire suite' <<-\\EOF &&
+		for i in 1 2 3
+		do
+			test_expect_success \"passing test #\$i\" 'true'
+		done
+		test_done
+		EOF
+		check_sub_test_lib_test git-skip-tests-entire-suite <<-\\EOF
+		> 1..0 # SKIP skip all tests in git
+		EOF
+	)
+"
+
+test_expect_success 'GIT_SKIP_TESTS does not skip unmatched suite' "
+	(
+		GIT_SKIP_TESTS='notgit' && export GIT_SKIP_TESTS &&
+		run_sub_test_lib_test git-skip-tests-unmatched-suite \
+			'GIT_SKIP_TESTS does not skip unmatched suite' <<-\\EOF &&
+		for i in 1 2 3
+		do
+			test_expect_success \"passing test #\$i\" 'true'
+		done
+		test_done
+		EOF
+		check_sub_test_lib_test git-skip-tests-unmatched-suite <<-\\EOF
+		> ok 1 - passing test #1
+		> ok 2 - passing test #2
+		> ok 3 - passing test #3
+		> # passed all 3 test(s)
+		> 1..3
+		EOF
+	)
+"
+
 test_expect_success '--run basic' "
 	run_sub_test_lib_test run-basic \
 		'--run basic' --run='1 3 5' <<-\\EOF &&
@@ -794,8 +831,21 @@ then
 	exit 1
 fi
 
+test_expect_success 'lazy prereqs do not turn off tracing' "
+	run_sub_test_lib_test lazy-prereq-and-tracing \
+		'lazy prereqs and -x' -v -x <<-\\EOF &&
+	test_lazy_prereq LAZY true
+
+	test_expect_success lazy 'test_have_prereq LAZY && echo trace'
+
+	test_done
+	EOF
+
+	grep 'echo trace' lazy-prereq-and-tracing/err
+"
+
 test_expect_success 'tests clean up even on failures' "
-	test_must_fail run_sub_test_lib_test \
+	run_sub_test_lib_test_err \
 		failing-cleanup 'Failing tests with cleanup commands' <<-\\EOF &&
 	test_expect_success 'tests clean up even after a failure' '
 		touch clean-after-failure &&
@@ -824,7 +874,7 @@ test_expect_success 'tests clean up even on failures' "
 "
 
 test_expect_success 'test_atexit is run' "
-	test_must_fail run_sub_test_lib_test \
+	run_sub_test_lib_test_err \
 		atexit-cleanup 'Run atexit commands' -i <<-\\EOF &&
 	test_expect_success 'tests clean up even after a failure' '
 		> ../../clean-atexit &&
@@ -841,10 +891,6 @@ test_expect_success 'test_atexit is run' "
 	test_path_is_missing also-clean-atexit
 "
 
-test_expect_success 'test_oid setup' '
-	test_oid_init
-'
-
 test_expect_success 'test_oid provides sane info by default' '
 	test_oid zero >actual &&
 	grep "^00*\$" actual &&
@@ -878,6 +924,51 @@ test_expect_success 'test_oid can look up data for SHA-256' '
 	test "$hexsz" -eq 64
 '
 
+test_expect_success 'test_oid can look up data for a specified algorithm' '
+	rawsz="$(test_oid --hash=sha1 rawsz)" &&
+	hexsz="$(test_oid --hash=sha1 hexsz)" &&
+	test "$rawsz" -eq 20 &&
+	test "$hexsz" -eq 40 &&
+	rawsz="$(test_oid --hash=sha256 rawsz)" &&
+	hexsz="$(test_oid --hash=sha256 hexsz)" &&
+	test "$rawsz" -eq 32 &&
+	test "$hexsz" -eq 64
+'
+
+test_expect_success 'test_bool_env' '
+	(
+		sane_unset envvar &&
+
+		test_bool_env envvar true &&
+		! test_bool_env envvar false &&
+
+		envvar= &&
+		export envvar &&
+		! test_bool_env envvar true &&
+		! test_bool_env envvar false &&
+
+		envvar=true &&
+		test_bool_env envvar true &&
+		test_bool_env envvar false &&
+
+		envvar=false &&
+		! test_bool_env envvar true &&
+		! test_bool_env envvar false &&
+
+		envvar=invalid &&
+		# When encountering an invalid bool value, test_bool_env
+		# prints its error message to the original stderr of the
+		# test script, hence the redirection of fd 7, and aborts
+		# with "exit 1", hence the subshell.
+		! ( test_bool_env envvar true ) 7>err &&
+		grep "error: test_bool_env requires bool values" err &&
+
+		envvar=true &&
+		! ( test_bool_env envvar invalid ) 7>err &&
+		grep "error: test_bool_env requires bool values" err
+	)
+'
+
 ################################################################
 # Basics of the basics
 
@@ -1187,4 +1278,22 @@ test_expect_success 'very long name in the index handled sanely' '
 	test $len = 4098
 '
 
+test_expect_success 'test_must_fail on a failing git command' '
+	test_must_fail git notacommand
+'
+
+test_expect_success 'test_must_fail on a failing git command with env' '
+	test_must_fail env var1=a var2=b git notacommand
+'
+
+test_expect_success 'test_must_fail rejects a non-git command' '
+	! test_must_fail grep ^$ notafile 2>err &&
+	grep -F "test_must_fail: only '"'"'git'"'"' is allowed" err
+'
+
+test_expect_success 'test_must_fail rejects a non-git command with env' '
+	! test_must_fail env var1=a var2=b grep ^$ notafile 2>err &&
+	grep -F "test_must_fail: only '"'"'git'"'"' is allowed" err
+'
+
 test_done