baf5aaa333
Normally it doesn't matter if we show the pre-image or th post-image for the common parts of a diff because they are the same. If white-space changes are ignored they can differ, though. The new text after applying the diff is more interesting in that case, so show that instead of the old contents. Note: GNU diff shows the pre-image. Suggested-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx> Signed-off-by: Junio C Hamano <gitster@pobox.com>
560 lines
12 KiB
Bash
Executable File
560 lines
12 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright (c) 2006 Johannes E. Schindelin
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#
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test_description='Test special whitespace in diff engine.
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'
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. ./test-lib.sh
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. "$TEST_DIRECTORY"/diff-lib.sh
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# Ray Lehtiniemi's example
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cat << EOF > x
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do {
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nothing;
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} while (0);
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EOF
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git update-index --add x
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cat << EOF > x
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do
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{
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nothing;
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}
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while (0);
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EOF
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cat << EOF > expect
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diff --git a/x b/x
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index adf3937..6edc172 100644
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--- a/x
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+++ b/x
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@@ -1,3 +1,5 @@
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-do {
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+do
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+{
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nothing;
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-} while (0);
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+}
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+while (0);
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EOF
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git diff > out
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test_expect_success "Ray's example without options" 'test_cmp expect out'
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git diff -w > out
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test_expect_success "Ray's example with -w" 'test_cmp expect out'
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git diff -b > out
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test_expect_success "Ray's example with -b" 'test_cmp expect out'
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tr 'Q' '\015' << EOF > x
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whitespace at beginning
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whitespace change
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whitespace in the middle
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whitespace at end
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unchanged line
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CR at endQ
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EOF
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git update-index x
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tr '_' ' ' << EOF > x
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whitespace at beginning
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whitespace change
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white space in the middle
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whitespace at end__
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unchanged line
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CR at end
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EOF
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tr 'Q_' '\015 ' << EOF > expect
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diff --git a/x b/x
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index d99af23..8b32fb5 100644
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--- a/x
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+++ b/x
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@@ -1,6 +1,6 @@
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-whitespace at beginning
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-whitespace change
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-whitespace in the middle
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-whitespace at end
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+ whitespace at beginning
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+whitespace change
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+white space in the middle
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+whitespace at end__
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unchanged line
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-CR at endQ
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+CR at end
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EOF
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git diff > out
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test_expect_success 'another test, without options' 'test_cmp expect out'
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cat << EOF > expect
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EOF
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git diff -w > out
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test_expect_success 'another test, with -w' 'test_cmp expect out'
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git diff -w -b > out
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test_expect_success 'another test, with -w -b' 'test_cmp expect out'
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git diff -w --ignore-space-at-eol > out
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test_expect_success 'another test, with -w --ignore-space-at-eol' 'test_cmp expect out'
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git diff -w -b --ignore-space-at-eol > out
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test_expect_success 'another test, with -w -b --ignore-space-at-eol' 'test_cmp expect out'
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tr 'Q_' '\015 ' << EOF > expect
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diff --git a/x b/x
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index d99af23..8b32fb5 100644
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--- a/x
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+++ b/x
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@@ -1,6 +1,6 @@
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-whitespace at beginning
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+ whitespace at beginning
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whitespace change
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-whitespace in the middle
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+white space in the middle
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whitespace at end__
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unchanged line
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CR at end
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EOF
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git diff -b > out
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test_expect_success 'another test, with -b' 'test_cmp expect out'
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git diff -b --ignore-space-at-eol > out
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test_expect_success 'another test, with -b --ignore-space-at-eol' 'test_cmp expect out'
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tr 'Q_' '\015 ' << EOF > expect
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diff --git a/x b/x
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index d99af23..8b32fb5 100644
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--- a/x
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+++ b/x
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@@ -1,6 +1,6 @@
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-whitespace at beginning
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-whitespace change
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-whitespace in the middle
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+ whitespace at beginning
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+whitespace change
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+white space in the middle
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whitespace at end__
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unchanged line
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CR at end
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EOF
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git diff --ignore-space-at-eol > out
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test_expect_success 'another test, with --ignore-space-at-eol' 'test_cmp expect out'
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test_expect_success 'check mixed spaces and tabs in indent' '
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# This is indented with SP HT SP.
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echo " foo();" > x &&
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git diff --check | grep "space before tab in indent"
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'
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test_expect_success 'check mixed tabs and spaces in indent' '
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# This is indented with HT SP HT.
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echo " foo();" > x &&
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git diff --check | grep "space before tab in indent"
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'
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test_expect_success 'check with no whitespace errors' '
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git commit -m "snapshot" &&
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echo "foo();" > x &&
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git diff --check
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'
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test_expect_success 'check with trailing whitespace' '
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echo "foo(); " > x &&
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test_must_fail git diff --check
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'
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test_expect_success 'check with space before tab in indent' '
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# indent has space followed by hard tab
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echo " foo();" > x &&
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test_must_fail git diff --check
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'
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test_expect_success '--check and --exit-code are not exclusive' '
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git checkout x &&
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git diff --check --exit-code
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'
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test_expect_success '--check and --quiet are not exclusive' '
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git diff --check --quiet
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'
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test_expect_success 'check staged with no whitespace errors' '
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echo "foo();" > x &&
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git add x &&
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git diff --cached --check
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'
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test_expect_success 'check staged with trailing whitespace' '
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echo "foo(); " > x &&
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git add x &&
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test_must_fail git diff --cached --check
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'
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test_expect_success 'check staged with space before tab in indent' '
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# indent has space followed by hard tab
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echo " foo();" > x &&
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git add x &&
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test_must_fail git diff --cached --check
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'
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test_expect_success 'check with no whitespace errors (diff-index)' '
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echo "foo();" > x &&
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git add x &&
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git diff-index --check HEAD
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'
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test_expect_success 'check with trailing whitespace (diff-index)' '
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echo "foo(); " > x &&
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git add x &&
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test_must_fail git diff-index --check HEAD
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'
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test_expect_success 'check with space before tab in indent (diff-index)' '
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# indent has space followed by hard tab
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echo " foo();" > x &&
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git add x &&
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test_must_fail git diff-index --check HEAD
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'
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test_expect_success 'check staged with no whitespace errors (diff-index)' '
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echo "foo();" > x &&
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git add x &&
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git diff-index --cached --check HEAD
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'
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test_expect_success 'check staged with trailing whitespace (diff-index)' '
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echo "foo(); " > x &&
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git add x &&
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test_must_fail git diff-index --cached --check HEAD
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'
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test_expect_success 'check staged with space before tab in indent (diff-index)' '
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# indent has space followed by hard tab
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echo " foo();" > x &&
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git add x &&
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test_must_fail git diff-index --cached --check HEAD
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'
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test_expect_success 'check with no whitespace errors (diff-tree)' '
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echo "foo();" > x &&
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git commit -m "new commit" x &&
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git diff-tree --check HEAD^ HEAD
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'
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test_expect_success 'check with trailing whitespace (diff-tree)' '
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echo "foo(); " > x &&
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git commit -m "another commit" x &&
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test_must_fail git diff-tree --check HEAD^ HEAD
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'
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test_expect_success 'check with space before tab in indent (diff-tree)' '
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# indent has space followed by hard tab
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echo " foo();" > x &&
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git commit -m "yet another" x &&
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test_must_fail git diff-tree --check HEAD^ HEAD
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'
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test_expect_success 'check trailing whitespace (trailing-space: off)' '
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git config core.whitespace "-trailing-space" &&
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echo "foo (); " > x &&
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git diff --check
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'
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test_expect_success 'check trailing whitespace (trailing-space: on)' '
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git config core.whitespace "trailing-space" &&
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echo "foo (); " > x &&
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test_must_fail git diff --check
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'
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test_expect_success 'check space before tab in indent (space-before-tab: off)' '
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# indent contains space followed by HT
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git config core.whitespace "-space-before-tab" &&
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echo " foo ();" > x &&
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git diff --check
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'
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test_expect_success 'check space before tab in indent (space-before-tab: on)' '
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# indent contains space followed by HT
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git config core.whitespace "space-before-tab" &&
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echo " foo (); " > x &&
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test_must_fail git diff --check
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'
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test_expect_success 'check spaces as indentation (indent-with-non-tab: off)' '
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git config core.whitespace "-indent-with-non-tab" &&
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echo " foo ();" > x &&
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git diff --check
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'
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test_expect_success 'check spaces as indentation (indent-with-non-tab: on)' '
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git config core.whitespace "indent-with-non-tab" &&
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echo " foo ();" > x &&
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test_must_fail git diff --check
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'
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test_expect_success 'ditto, but tabwidth=9' '
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git config core.whitespace "indent-with-non-tab,tabwidth=9" &&
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git diff --check
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'
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test_expect_success 'check tabs and spaces as indentation (indent-with-non-tab: on)' '
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git config core.whitespace "indent-with-non-tab" &&
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echo " foo ();" > x &&
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test_must_fail git diff --check
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'
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test_expect_success 'ditto, but tabwidth=10' '
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git config core.whitespace "indent-with-non-tab,tabwidth=10" &&
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test_must_fail git diff --check
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'
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test_expect_success 'ditto, but tabwidth=20' '
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git config core.whitespace "indent-with-non-tab,tabwidth=20" &&
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git diff --check
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'
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test_expect_success 'check tabs as indentation (tab-in-indent: off)' '
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git config core.whitespace "-tab-in-indent" &&
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echo " foo ();" > x &&
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git diff --check
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'
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test_expect_success 'check tabs as indentation (tab-in-indent: on)' '
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git config core.whitespace "tab-in-indent" &&
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echo " foo ();" > x &&
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test_must_fail git diff --check
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'
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test_expect_success 'check tabs and spaces as indentation (tab-in-indent: on)' '
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git config core.whitespace "tab-in-indent" &&
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echo " foo ();" > x &&
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test_must_fail git diff --check
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'
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test_expect_success 'ditto, but tabwidth=1 (must be irrelevant)' '
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git config core.whitespace "tab-in-indent,tabwidth=1" &&
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test_must_fail git diff --check
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'
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test_expect_success 'check tab-in-indent and indent-with-non-tab conflict' '
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git config core.whitespace "tab-in-indent,indent-with-non-tab" &&
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echo "foo ();" > x &&
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test_must_fail git diff --check
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'
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test_expect_success 'check tab-in-indent excluded from wildcard whitespace attribute' '
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git config --unset core.whitespace &&
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echo "x whitespace" > .gitattributes &&
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echo " foo ();" > x &&
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git diff --check &&
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rm -f .gitattributes
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'
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test_expect_success 'line numbers in --check output are correct' '
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echo "" > x &&
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echo "foo(); " >> x &&
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git diff --check | grep "x:2:"
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'
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test_expect_success 'checkdiff detects new trailing blank lines (1)' '
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echo "foo();" >x &&
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echo "" >>x &&
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git diff --check | grep "new blank line"
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'
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test_expect_success 'checkdiff detects new trailing blank lines (2)' '
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{ echo a; echo b; echo; echo; } >x &&
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git add x &&
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{ echo a; echo; echo; echo; echo; } >x &&
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git diff --check | grep "new blank line"
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'
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test_expect_success 'checkdiff allows new blank lines' '
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git checkout x &&
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mv x y &&
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(
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echo "/* This is new */" &&
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echo "" &&
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cat y
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) >x &&
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git diff --check
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'
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cat <<EOF >expect
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EOF
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test_expect_success 'whitespace-only changes not reported' '
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git reset --hard &&
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echo >x "hello world" &&
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git add x &&
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git commit -m "hello 1" &&
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echo >x "hello world" &&
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git diff -b >actual &&
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test_cmp expect actual
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'
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cat <<EOF >expect
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diff --git a/x b/z
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similarity index NUM%
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rename from x
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rename to z
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index 380c32a..a97b785 100644
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EOF
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test_expect_success 'whitespace-only changes reported across renames' '
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git reset --hard &&
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for i in 1 2 3 4 5 6 7 8 9; do echo "$i$i$i$i$i$i"; done >x &&
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git add x &&
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git commit -m "base" &&
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sed -e "5s/^/ /" x >z &&
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git rm x &&
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git add z &&
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git diff -w -M --cached |
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sed -e "/^similarity index /s/[0-9][0-9]*/NUM/" >actual &&
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test_cmp expect actual
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'
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cat >expected <<\EOF
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diff --git a/empty b/void
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similarity index 100%
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rename from empty
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rename to void
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EOF
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test_expect_success 'rename empty' '
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git reset --hard &&
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>empty &&
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git add empty &&
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git commit -m empty &&
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git mv empty void &&
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git diff -w --cached -M >current &&
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test_cmp expected current
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'
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test_expect_success 'combined diff with autocrlf conversion' '
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git reset --hard &&
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echo >x hello &&
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git commit -m "one side" x &&
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git checkout HEAD^ &&
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echo >x goodbye &&
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git commit -m "the other side" x &&
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git config core.autocrlf true &&
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test_must_fail git merge master &&
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git diff | sed -e "1,/^@@@/d" >actual &&
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! grep "^-" actual
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'
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# Start testing the colored format for whitespace checks
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test_expect_success 'setup diff colors' '
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git config color.diff always &&
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git config color.diff.plain normal &&
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git config color.diff.meta bold &&
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git config color.diff.frag cyan &&
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git config color.diff.func normal &&
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git config color.diff.old red &&
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git config color.diff.new green &&
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git config color.diff.commit yellow &&
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git config color.diff.whitespace "normal red" &&
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git config core.autocrlf false
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'
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cat >expected <<\EOF
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<BOLD>diff --git a/x b/x<RESET>
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<BOLD>index 9daeafb..2874b91 100644<RESET>
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<BOLD>--- a/x<RESET>
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<BOLD>+++ b/x<RESET>
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<CYAN>@@ -1 +1,4 @@<RESET>
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test<RESET>
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<GREEN>+<RESET><GREEN>{<RESET>
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<GREEN>+<RESET><BRED> <RESET>
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<GREEN>+<RESET><GREEN>}<RESET>
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EOF
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test_expect_success 'diff that introduces a line with only tabs' '
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git config core.whitespace blank-at-eol &&
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git reset --hard &&
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echo "test" > x &&
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git commit -m "initial" x &&
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echo "{NTN}" | tr "NT" "\n\t" >> x &&
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git -c color.diff=always diff | test_decode_color >current &&
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test_cmp expected current
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'
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test_done
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