EOF
git diff > out
-test_expect_success "Ray's example without options" 'git diff expect out'
+test_expect_success "Ray's example without options" 'test_cmp expect out'
git diff -w > out
-test_expect_success "Ray's example with -w" 'git diff expect out'
+test_expect_success "Ray's example with -w" 'test_cmp expect out'
git diff -b > out
-test_expect_success "Ray's example with -b" 'git diff expect out'
+test_expect_success "Ray's example with -b" 'test_cmp expect out'
tr 'Q' '\015' << EOF > x
whitespace at beginning
+CR at end
EOF
git diff > out
-test_expect_success 'another test, without options' 'git diff expect out'
+test_expect_success 'another test, without options' 'test_cmp expect out'
cat << EOF > expect
diff --git a/x b/x
index d99af23..8b32fb5 100644
EOF
git diff -w > out
-test_expect_success 'another test, with -w' 'git diff expect out'
+test_expect_success 'another test, with -w' 'test_cmp expect out'
tr 'Q' '\015' << EOF > expect
diff --git a/x b/x
CR at endQ
EOF
git diff -b > out
-test_expect_success 'another test, with -b' 'git diff expect out'
+test_expect_success 'another test, with -b' 'test_cmp expect out'
+
+test_expect_success 'check mixed spaces and tabs in indent' '
+
+ # This is indented with SP HT SP.
+ echo " foo();" > x &&
+ git diff --check | grep "space before tab in indent"
+
+'
+
+test_expect_success 'check mixed tabs and spaces in indent' '
+
+ # This is indented with HT SP HT.
+ echo " foo();" > x &&
+ git diff --check | grep "space before tab in indent"
+
+'
+
+test_expect_success 'check with no whitespace errors' '
+
+ git commit -m "snapshot" &&
+ echo "foo();" > x &&
+ git diff --check
+
+'
+
+test_expect_success 'check with trailing whitespace' '
+
+ echo "foo(); " > x &&
+ ! git diff --check
+
+'
+
+test_expect_success 'check with space before tab in indent' '
+
+ # indent has space followed by hard tab
+ echo " foo();" > x &&
+ ! git diff --check
+
+'
+
+test_expect_success '--check and --exit-code are not exclusive' '
+
+ git checkout x &&
+ git diff --check --exit-code
+
+'
+
+test_expect_success '--check and --quiet are not exclusive' '
+
+ git diff --check --quiet
+
+'
+
+test_expect_success 'check staged with no whitespace errors' '
+
+ echo "foo();" > x &&
+ git add x &&
+ git diff --cached --check
+
+'
+
+test_expect_success 'check staged with trailing whitespace' '
+
+ echo "foo(); " > x &&
+ git add x &&
+ ! git diff --cached --check
+
+'
+
+test_expect_success 'check staged with space before tab in indent' '
+
+ # indent has space followed by hard tab
+ echo " foo();" > x &&
+ git add x &&
+ ! git diff --cached --check
+
+'
+
+test_expect_success 'check with no whitespace errors (diff-index)' '
+
+ echo "foo();" > x &&
+ git add x &&
+ git diff-index --check HEAD
+
+'
+
+test_expect_success 'check with trailing whitespace (diff-index)' '
+
+ echo "foo(); " > x &&
+ git add x &&
+ ! git diff-index --check HEAD
+
+'
+
+test_expect_success 'check with space before tab in indent (diff-index)' '
+
+ # indent has space followed by hard tab
+ echo " foo();" > x &&
+ git add x &&
+ ! git diff-index --check HEAD
+
+'
+
+test_expect_success 'check staged with no whitespace errors (diff-index)' '
+
+ echo "foo();" > x &&
+ git add x &&
+ git diff-index --cached --check HEAD
+
+'
+
+test_expect_success 'check staged with trailing whitespace (diff-index)' '
+
+ echo "foo(); " > x &&
+ git add x &&
+ ! git diff-index --cached --check HEAD
+
+'
+
+test_expect_success 'check staged with space before tab in indent (diff-index)' '
+
+ # indent has space followed by hard tab
+ echo " foo();" > x &&
+ git add x &&
+ ! git diff-index --cached --check HEAD
+
+'
+
+test_expect_success 'check with no whitespace errors (diff-tree)' '
+
+ echo "foo();" > x &&
+ git commit -m "new commit" x &&
+ git diff-tree --check HEAD^ HEAD
+
+'
+
+test_expect_success 'check with trailing whitespace (diff-tree)' '
+
+ echo "foo(); " > x &&
+ git commit -m "another commit" x &&
+ ! git diff-tree --check HEAD^ HEAD
+
+'
+
+test_expect_success 'check with space before tab in indent (diff-tree)' '
+
+ # indent has space followed by hard tab
+ echo " foo();" > x &&
+ git commit -m "yet another" x &&
+ ! git diff-tree --check HEAD^ HEAD
+
+'
+
+test_expect_success 'check trailing whitespace (trailing-space: off)' '
+
+ git config core.whitespace "-trailing-space" &&
+ echo "foo (); " > x &&
+ git diff --check
+
+'
+
+test_expect_success 'check trailing whitespace (trailing-space: on)' '
+
+ git config core.whitespace "trailing-space" &&
+ echo "foo (); " > x &&
+ ! git diff --check
+
+'
+
+test_expect_success 'check space before tab in indent (space-before-tab: off)' '
+
+ # indent contains space followed by HT
+ git config core.whitespace "-space-before-tab" &&
+ echo " foo ();" > x &&
+ git diff --check
+
+'
+
+test_expect_success 'check space before tab in indent (space-before-tab: on)' '
+
+ # indent contains space followed by HT
+ git config core.whitespace "space-before-tab" &&
+ echo " foo (); " > x &&
+ ! git diff --check
+
+'
+
+test_expect_success 'check spaces as indentation (indent-with-non-tab: off)' '
+
+ git config core.whitespace "-indent-with-non-tab"
+ echo " foo ();" > x &&
+ git diff --check
+
+'
+
+test_expect_success 'check spaces as indentation (indent-with-non-tab: on)' '
+
+ git config core.whitespace "indent-with-non-tab" &&
+ echo " foo ();" > x &&
+ ! git diff --check
+
+'
+
+test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab: on)' '
+
+ git config core.whitespace "indent-with-non-tab" &&
+ echo " foo ();" > x &&
+ ! git diff --check
+
+'
+
+test_expect_success 'line numbers in --check output are correct' '
+
+ echo "" > x &&
+ echo "foo(); " >> x &&
+ git diff --check | grep "x:2:"
+
+'
test_done