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path: root/t/t4034-diff-words.sh
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#!/bin/sh
 
test_description='word diff colors'
 
. ./test-lib.sh
 
test_expect_success setup '
 
	git config diff.color.old red
	git config diff.color.new green
	git config diff.color.func magenta
 
'
 
word_diff () {
	test_must_fail git diff --no-index "$@" pre post > output &&
	test_decode_color <output >output.decrypted &&
	test_cmp expect output.decrypted
}
 
cat > pre <<\EOF
h(4)
 
a = b + c
EOF
 
cat > post <<\EOF
h(4),hh[44]
 
a = b + c
 
aa = a
 
aeff = aeff * ( aaa )
EOF
 
cat > expect <<\EOF
<WHITE>diff --git a/pre b/post<RESET>
<WHITE>index 330b04f..5ed8eff 100644<RESET>
<WHITE>--- a/pre<RESET>
<WHITE>+++ b/post<RESET>
<CYAN>@@ -1,3 +1,7 @@<RESET>
<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
 
a = b + c<RESET>
 
<GREEN>aa = a<RESET>
 
<GREEN>aeff = aeff * ( aaa )<RESET>
EOF
 
test_expect_success 'word diff with runs of whitespace' '
 
	word_diff --color-words
 
'
 
cat > expect <<\EOF
<WHITE>diff --git a/pre b/post<RESET>
<WHITE>index 330b04f..5ed8eff 100644<RESET>
<WHITE>--- a/pre<RESET>
<WHITE>+++ b/post<RESET>
<CYAN>@@ -1 +1 @@<RESET>
<RED>h(4)<RESET><GREEN>h(4),hh[44]<RESET>
<CYAN>@@ -3,0 +4,4 @@<RESET> <RESET><MAGENTA>a = b + c<RESET>
 
<GREEN>aa = a<RESET>
 
<GREEN>aeff = aeff * ( aaa )<RESET>
EOF
 
test_expect_success 'word diff without context' '
 
	word_diff --color-words --unified=0
 
'
 
cat > expect <<\EOF
<WHITE>diff --git a/pre b/post<RESET>
<WHITE>index 330b04f..5ed8eff 100644<RESET>
<WHITE>--- a/pre<RESET>
<WHITE>+++ b/post<RESET>
<CYAN>@@ -1,3 +1,7 @@<RESET>
h(4),<GREEN>hh<RESET>[44]
 
a = b + c<RESET>
 
<GREEN>aa = a<RESET>
 
<GREEN>aeff = aeff * ( aaa<RESET> )
EOF
cp expect expect.letter-runs-are-words
 
test_expect_success 'word diff with a regular expression' '
 
	word_diff --color-words="[a-z]+"
 
'
 
test_expect_success 'set a diff driver' '
	git config diff.testdriver.wordRegex "[^[:space:]]" &&
	cat <<EOF > .gitattributes
pre diff=testdriver
post diff=testdriver
EOF
'
 
test_expect_success 'option overrides .gitattributes' '
 
	word_diff --color-words="[a-z]+"
 
'
 
cat > expect <<\EOF
<WHITE>diff --git a/pre b/post<RESET>
<WHITE>index 330b04f..5ed8eff 100644<RESET>
<WHITE>--- a/pre<RESET>
<WHITE>+++ b/post<RESET>
<CYAN>@@ -1,3 +1,7 @@<RESET>
h(4)<GREEN>,hh[44]<RESET>
 
a = b + c<RESET>
 
<GREEN>aa = a<RESET>
 
<GREEN>aeff = aeff * ( aaa )<RESET>
EOF
cp expect expect.non-whitespace-is-word
 
test_expect_success 'use regex supplied by driver' '
 
	word_diff --color-words
 
'
 
test_expect_success 'set diff.wordRegex option' '
	git config diff.wordRegex "[[:alnum:]]+"
'
 
cp expect.letter-runs-are-words expect
 
test_expect_success 'command-line overrides config' '
	word_diff --color-words="[a-z]+"
'
 
cp expect.non-whitespace-is-word expect
 
test_expect_success '.gitattributes override config' '
	word_diff --color-words
'
 
test_expect_success 'remove diff driver regex' '
	git config --unset diff.testdriver.wordRegex
'
 
cat > expect <<\EOF
<WHITE>diff --git a/pre b/post<RESET>
<WHITE>index 330b04f..5ed8eff 100644<RESET>
<WHITE>--- a/pre<RESET>
<WHITE>+++ b/post<RESET>
<CYAN>@@ -1,3 +1,7 @@<RESET>
h(4),<GREEN>hh[44<RESET>]
 
a = b + c<RESET>
 
<GREEN>aa = a<RESET>
 
<GREEN>aeff = aeff * ( aaa<RESET> )
EOF
 
test_expect_success 'use configured regex' '
	word_diff --color-words
'
 
echo 'aaa (aaa)' > pre
echo 'aaa (aaa) aaa' > post
 
cat > expect <<\EOF
<WHITE>diff --git a/pre b/post<RESET>
<WHITE>index c29453b..be22f37 100644<RESET>
<WHITE>--- a/pre<RESET>
<WHITE>+++ b/post<RESET>
<CYAN>@@ -1 +1 @@<RESET>
aaa (aaa) <GREEN>aaa<RESET>
EOF
 
test_expect_success 'test parsing words for newline' '
 
	word_diff --color-words="a+"
 
 
'
 
echo '(:' > pre
echo '(' > post
 
cat > expect <<\EOF
<WHITE>diff --git a/pre b/post<RESET>
<WHITE>index 289cb9d..2d06f37 100644<RESET>
<WHITE>--- a/pre<RESET>
<WHITE>+++ b/post<RESET>
<CYAN>@@ -1 +1 @@<RESET>
(<RED>:<RESET>
EOF
 
test_expect_success 'test when words are only removed at the end' '
 
	word_diff --color-words=.
 
'
 
test_done