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path: root/t/t4015-diff-whitespace.sh
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#!/bin/sh
#
# Copyright (c) 2006 Johannes E. Schindelin
#
 
test_description='Test special whitespace in diff engine.
 
'
. ./test-lib.sh
. ../diff-lib.sh
 
# Ray Lehtiniemi's example
 
cat << EOF > x
do {
   nothing;
} while (0);
EOF
 
git update-index --add x
 
cat << EOF > x
do
{
   nothing;
}
while (0);
EOF
 
cat << EOF > expect
diff --git a/x b/x
index adf3937..6edc172 100644
--- a/x
+++ b/x
@@ -1,3 +1,5 @@
-do {
+do
+{
    nothing;
-} while (0);
+}
+while (0);
EOF
 
git diff > out
test_expect_success "Ray's example without options" 'git diff expect out'
 
git diff -w > out
test_expect_success "Ray's example with -w" 'git diff expect out'
 
git diff -b > out
test_expect_success "Ray's example with -b" 'git diff expect out'
 
tr 'Q' '\015' << EOF > x
whitespace at beginning
whitespace change
whitespace in the middle
whitespace at end
unchanged line
CR at endQ
EOF
 
git update-index x
 
cat << EOF > x
	whitespace at beginning
whitespace 	 change
white space in the middle
whitespace at end  
unchanged line
CR at end
EOF
 
tr 'Q' '\015' << EOF > expect
diff --git a/x b/x
index d99af23..8b32fb5 100644
--- a/x
+++ b/x
@@ -1,6 +1,6 @@
-whitespace at beginning
-whitespace change
-whitespace in the middle
-whitespace at end
+	whitespace at beginning
+whitespace 	 change
+white space in the middle
+whitespace at end  
 unchanged line
-CR at endQ
+CR at end
EOF
git diff > out
test_expect_success 'another test, without options' 'git diff 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'
 
tr 'Q' '\015' << EOF > expect
diff --git a/x b/x
index d99af23..8b32fb5 100644
--- a/x
+++ b/x
@@ -1,6 +1,6 @@
-whitespace at beginning
+	whitespace at beginning
 whitespace change
-whitespace in the middle
+white space in the middle
 whitespace at end
 unchanged line
 CR at endQ
EOF
git diff -b > out
test_expect_success 'another test, with -b' 'git diff 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_done