Add a small patch-mode testing library

diff --git a/t/t4019-diff-wserror.sh b/t/t4019-diff-wserror.sh
index 67e080bdbe5a98a9c446af8aee41acc9fb9129b4..84a1fe31151c2af38554eaca8f03e2c1e2e7848f 100755 (executable)
--- a/t/t4019-diff-wserror.sh
+++ b/t/t4019-diff-wserror.sh
@@ -12,7 +12,9 @@ test_expect_success setup '
        echo "         Eight SP indent" >>F &&
        echo "  HT and SP indent" >>F &&
        echo "With trailing SP " >>F &&
-       echo "No problem" >>F
+       echo "Carriage ReturnQ" | tr Q "\015" >>F &&
+       echo "No problem" >>F &&
+       echo >>F
 
 '
 
@@ -27,6 +29,7 @@ test_expect_success default '
        grep Eight normal >/dev/null &&
        grep HT error >/dev/null &&
        grep With error >/dev/null &&
+       grep Return error >/dev/null &&
        grep No normal >/dev/null
 
 '
@@ -41,6 +44,7 @@ test_expect_success 'without -trail' '
        grep Eight normal >/dev/null &&
        grep HT error >/dev/null &&
        grep With normal >/dev/null &&
+       grep Return normal >/dev/null &&
        grep No normal >/dev/null
 
 '
@@ -56,6 +60,7 @@ test_expect_success 'without -trail (attribute)' '
        grep Eight normal >/dev/null &&
        grep HT error >/dev/null &&
        grep With normal >/dev/null &&
+       grep Return normal >/dev/null &&
        grep No normal >/dev/null
 
 '
@@ -71,6 +76,7 @@ test_expect_success 'without -space' '
        grep Eight normal >/dev/null &&
        grep HT normal >/dev/null &&
        grep With error >/dev/null &&
+       grep Return error >/dev/null &&
        grep No normal >/dev/null
 
 '
@@ -86,6 +92,7 @@ test_expect_success 'without -space (attribute)' '
        grep Eight normal >/dev/null &&
        grep HT normal >/dev/null &&
        grep With error >/dev/null &&
+       grep Return error >/dev/null &&
        grep No normal >/dev/null
 
 '
@@ -101,6 +108,7 @@ test_expect_success 'with indent-non-tab only' '
        grep Eight error >/dev/null &&
        grep HT normal >/dev/null &&
        grep With normal >/dev/null &&
+       grep Return normal >/dev/null &&
        grep No normal >/dev/null
 
 '
@@ -116,8 +124,70 @@ test_expect_success 'with indent-non-tab only (attribute)' '
        grep Eight error >/dev/null &&
        grep HT normal >/dev/null &&
        grep With normal >/dev/null &&
+       grep Return normal >/dev/null &&
        grep No normal >/dev/null
 
 '
 
+test_expect_success 'with cr-at-eol' '
+
+       rm -f .gitattributes
+       git config core.whitespace cr-at-eol
+       git diff --color >output
+       grep "$blue_grep" output >error
+       grep -v "$blue_grep" output >normal
+
+       grep Eight normal >/dev/null &&
+       grep HT error >/dev/null &&
+       grep With error >/dev/null &&
+       grep Return normal >/dev/null &&
+       grep No normal >/dev/null
+
+'
+
+test_expect_success 'with cr-at-eol (attribute)' '
+
+       git config --unset core.whitespace
+       echo "F whitespace=trailing,cr-at-eol" >.gitattributes
+       git diff --color >output
+       grep "$blue_grep" output >error
+       grep -v "$blue_grep" output >normal
+
+       grep Eight normal >/dev/null &&
+       grep HT error >/dev/null &&
+       grep With error >/dev/null &&
+       grep Return normal >/dev/null &&
+       grep No normal >/dev/null
+
+'
+
+test_expect_success 'trailing empty lines (1)' '
+
+       rm -f .gitattributes &&
+       test_must_fail git diff --check >output &&
+       grep "ends with blank lines." output &&
+       grep "trailing whitespace" output
+
+'
+
+test_expect_success 'trailing empty lines (2)' '
+
+       echo "F -whitespace" >.gitattributes &&
+       git diff --check >output &&
+       ! test -s output
+
+'
+
+test_expect_success 'do not color trailing cr in context' '
+       git config --unset core.whitespace
+       rm -f .gitattributes &&
+       echo AAAQ | tr Q "\015" >G &&
+       git add G &&
+       echo BBBQ | tr Q "\015" >>G
+       git diff --color G | tr "\015" Q >output &&
+       grep "BBB.*${blue_grep}Q" output &&
+       grep "AAA.*\[mQ" output
+
+'
+
 test_done