test-lib: allow negation of prerequisites

diff --git a/t/t4204-patch-id.sh b/t/t4204-patch-id.sh
index 04f7bae8503f7605f1403f55d0bf4d9cd146913d..d2c930de87f721a0e876351e511295ae0b094108 100755 (executable)
--- a/t/t4204-patch-id.sh
+++ b/t/t4204-patch-id.sh
@@ -18,6 +18,11 @@ test_expect_success 'patch-id output is well-formed' '
        grep "^[a-f0-9]\{40\} $(git rev-parse HEAD)$" output
 '
 
+calc_patch_id () {
+       git patch-id |
+               sed "s# .*##" > patch-id_"$1"
+}
+
 get_patch_id () {
        git log -p -1 "$1" | git patch-id |
                sed "s# .*##" > patch-id_"$1"
@@ -35,4 +40,63 @@ test_expect_success 'patch-id detects inequality' '
        ! test_cmp patch-id_master patch-id_notsame
 '
 
+test_expect_success 'patch-id supports git-format-patch output' '
+       get_patch_id master &&
+       git checkout same &&
+       git format-patch -1 --stdout | calc_patch_id same &&
+       test_cmp patch-id_master patch-id_same &&
+       set `git format-patch -1 --stdout | git patch-id` &&
+       test "$2" = `git rev-parse HEAD`
+'
+
+test_expect_success 'whitespace is irrelevant in footer' '
+       get_patch_id master &&
+       git checkout same &&
+       git format-patch -1 --stdout | sed "s/ \$//" | calc_patch_id same &&
+       test_cmp patch-id_master patch-id_same
+'
+
+test_expect_success 'patch-id supports git-format-patch MIME output' '
+       get_patch_id master &&
+       git checkout same &&
+       git format-patch -1 --attach --stdout | calc_patch_id same &&
+       test_cmp patch-id_master patch-id_same
+'
+
+cat >nonl <<\EOF
+diff --git i/a w/a
+index e69de29..2e65efe 100644
+--- i/a
++++ w/a
+@@ -0,0 +1 @@
++a
+\ No newline at end of file
+diff --git i/b w/b
+index e69de29..6178079 100644
+--- i/b
++++ w/b
+@@ -0,0 +1 @@
++b
+EOF
+
+cat >withnl <<\EOF
+diff --git i/a w/a
+index e69de29..7898192 100644
+--- i/a
++++ w/a
+@@ -0,0 +1 @@
++a
+diff --git i/b w/b
+index e69de29..6178079 100644
+--- i/b
++++ w/b
+@@ -0,0 +1 @@
++b
+EOF
+
+test_expect_success 'patch-id handles no-nl-at-eof markers' '
+       cat nonl | calc_patch_id nonl &&
+       cat withnl | calc_patch_id withnl &&
+       test_cmp patch-id_nonl patch-id_withnl
+'
 test_done