tests/: Do not use `sed -i`

"-i" isn't part of the POSIX standard and doesn't work on several
platforms such as OpenBSD. Use a temporary file instead.

Signed-off-by: Lukas Fleischer <cgit@cryptocrack.de>

tests/t0010-validate-html.sh

@@ -8,8 +8,8 @@ test_url()
 {
 	tidy_opt="-eq"
 	test -z "$NO_TIDY_WARNINGS" || tidy_opt+=" --show-warnings no"
-	cgit_url "$1" >tidy-$test_count || return
-	sed -ie "1,4d" tidy-$test_count || return
+	cgit_url "$1" >tidy-$test_count.tmp || return
+	sed -e "1,4d" tidy-$test_count.tmp >tidy-$test_count || return
 	"$tidy" $tidy_opt tidy-$test_count
 	rc=$?
 

tests/t0020-validate-cache.sh

@@ -6,7 +6,8 @@ test_description='Validate cache'
 test_expect_success 'verify cache-size=0' '
 
 	rm -f cache/* &&
-	sed -i -e "s/cache-size=1021$/cache-size=0/" cgitrc &&
+	sed -e "s/cache-size=1021$/cache-size=0/" cgitrc >cgitrc.tmp &&
+	mv -f cgitrc.tmp cgitrc &&
 	cgit_url "" &&
 	cgit_url "foo" &&
 	cgit_url "foo/refs" &&
@@ -27,7 +28,8 @@ test_expect_success 'verify cache-size=0' '
 test_expect_success 'verify cache-size=1' '
 
 	rm -f cache/* &&
-	sed -i -e "s/cache-size=0$/cache-size=1/" cgitrc &&
+	sed -e "s/cache-size=0$/cache-size=1/" cgitrc >cgitrc.tmp &&
+	mv -f cgitrc.tmp cgitrc &&
 	cgit_url "" &&
 	cgit_url "foo" &&
 	cgit_url "foo/refs" &&
@@ -48,7 +50,8 @@ test_expect_success 'verify cache-size=1' '
 test_expect_success 'verify cache-size=1021' '
 
 	rm -f cache/* &&
-	sed -i -e "s/cache-size=1$/cache-size=1021/" cgitrc &&
+	sed -e "s/cache-size=1$/cache-size=1021/" cgitrc >cgitrc.tmp &&
+	mv -f cgitrc.tmp cgitrc &&
 	cgit_url "" &&
 	cgit_url "foo" &&
 	cgit_url "foo/refs" &&