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From: "Michał Kępień" <michal@isc.org>
To: git@vger.kernel.org
Subject: [PATCH v2 3/3] t: add -I<regex> tests
Date: Mon, 12 Oct 2020 11:17:51 +0200	[thread overview]
Message-ID: <20201012091751.19594-4-michal@isc.org> (raw)
In-Reply-To: <20201012091751.19594-1-michal@isc.org>

Exercise the new -I<regex> diff option in various scenarios to ensure it
behaves as expected.

Signed-off-by: Michał Kępień <michal@isc.org>
---
 t/t4069-diff-ignore-regex.sh | 426 +++++++++++++++++++++++++++++++++++
 1 file changed, 426 insertions(+)
 create mode 100755 t/t4069-diff-ignore-regex.sh

diff --git a/t/t4069-diff-ignore-regex.sh b/t/t4069-diff-ignore-regex.sh
new file mode 100755
index 0000000000..4ddf5c67ae
--- /dev/null
+++ b/t/t4069-diff-ignore-regex.sh
@@ -0,0 +1,426 @@
+#!/bin/sh
+
+test_description='Test diff -I<regex>'
+
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/diff-lib.sh
+
+test_expect_success setup '
+	test_seq 20 >x &&
+	git update-index --add x
+'
+
+test_expect_success 'one line changed' '
+	test_seq 20 | sed "s/10/100/" >x &&
+
+	# Get plain diff
+	git diff >plain &&
+	cat >expected <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -7,7 +7,7 @@
+	 7
+	 8
+	 9
+	-10
+	+100
+	 11
+	 12
+	 13
+	EOF
+	compare_diff_patch expected plain &&
+
+	# Both old and new line match regex - ignore change
+	git diff -I "^10" >actual &&
+	test_must_be_empty actual &&
+
+	# Both old and new line match some regex - ignore change
+	git diff -I "^10\$" -I "^100" >actual &&
+	test_must_be_empty actual &&
+
+	# Only old line matches regex - do not ignore change
+	git diff -I "^10\$" >actual &&
+	compare_diff_patch plain actual &&
+
+	# Only new line matches regex - do not ignore change
+	git diff -I "^100" >actual &&
+	compare_diff_patch plain actual &&
+
+	# Only old line matches some regex - do not ignore change
+	git diff -I "^10\$" -I "^101" >actual &&
+	compare_diff_patch plain actual &&
+
+	# Only new line matches some regex - do not ignore change
+	git diff -I "^11\$" -I "^100" >actual &&
+	compare_diff_patch plain actual
+'
+
+test_expect_success 'one line removed' '
+	test_seq 20 | sed "10d" >x &&
+
+	# Get plain diff
+	git diff >plain &&
+	cat >expected <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -7,7 +7,6 @@
+	 7
+	 8
+	 9
+	-10
+	 11
+	 12
+	 13
+	EOF
+	compare_diff_patch expected plain &&
+
+	# Removed line matches regex - ignore change
+	git diff -I "^10" >actual &&
+	test_must_be_empty actual &&
+
+	# Removed line matches some regex - ignore change
+	git diff -I "^10" -I "^100" >actual &&
+	test_must_be_empty actual &&
+
+	# Removed line does not match regex - do not ignore change
+	git diff -I "^101" >actual &&
+	compare_diff_patch plain actual &&
+
+	# Removed line does not match any regex - do not ignore change
+	git diff -I "^100" -I "^101" >actual &&
+	compare_diff_patch plain actual
+'
+
+test_expect_success 'one line added' '
+	test_seq 21 >x &&
+
+	# Get plain diff
+	git diff >plain &&
+	cat >expected <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -18,3 +18,4 @@
+	 18
+	 19
+	 20
+	+21
+	EOF
+	compare_diff_patch expected plain &&
+
+	# Added line matches regex - ignore change
+	git diff -I "^21" >actual &&
+	test_must_be_empty actual &&
+
+	# Added line matches some regex - ignore change
+	git diff -I "^21" -I "^22" >actual &&
+	test_must_be_empty actual &&
+
+	# Added line does not match regex - do not ignore change
+	git diff -I "^212" >actual &&
+	compare_diff_patch plain actual &&
+
+	# Added line does not match any regex - do not ignore change
+	git diff -I "^211" -I "^212" >actual &&
+	compare_diff_patch plain actual
+'
+
+test_expect_success 'last two lines changed' '
+	test_seq 20 | sed "s/19/21/; s/20/22/" >x &&
+
+	# Get plain diff
+	git diff >plain &&
+	cat >expected <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -16,5 +16,5 @@
+	 16
+	 17
+	 18
+	-19
+	-20
+	+21
+	+22
+	EOF
+	compare_diff_patch expected plain &&
+
+	# All changed lines match regex - ignore change
+	git diff -I "^[12]" >actual &&
+	test_must_be_empty actual &&
+
+	# All changed lines match some regex - ignore change
+	git diff -I "^1" -I "^2" >actual &&
+	test_must_be_empty actual &&
+
+	# Not all changed lines match regex - do not ignore change
+	git diff -I "^2" >actual &&
+	compare_diff_patch plain actual &&
+
+	# Not all changed lines match some regex - do not ignore change
+	git diff -I "^2" -I "^3" >actual &&
+	compare_diff_patch plain actual
+'
+
+test_expect_success 'two non-adjacent lines removed in the same hunk' '
+	test_seq 20 | sed "1d; 3d" >x &&
+
+	# Get plain diff
+	git diff >plain &&
+	cat >expected <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -1,6 +1,4 @@
+	-1
+	 2
+	-3
+	 4
+	 5
+	 6
+	EOF
+	compare_diff_patch expected plain &&
+
+	# Both removed lines match regex - ignore hunk
+	git diff -I "^[1-3]" >actual &&
+	test_must_be_empty actual &&
+
+	# Both removed lines match some regex - ignore hunk
+	git diff -I "^1" -I "^3" >actual &&
+	test_must_be_empty actual &&
+
+	# First removed line does not match regex - do not ignore hunk
+	git diff -I "^[2-3]" >actual &&
+	compare_diff_patch plain actual &&
+
+	# First removed line does not match any regex - do not ignore hunk
+	git diff -I "^2" -I "^3" >actual &&
+	compare_diff_patch plain actual &&
+
+	# Second removed line does not match regex - do not ignore hunk
+	git diff -I "^[1-2]" >actual &&
+	compare_diff_patch plain actual &&
+
+	# Second removed line does not match any regex - do not ignore hunk
+	git diff -I "^1" -I "^2" >actual &&
+	compare_diff_patch plain actual
+'
+
+test_expect_success 'two non-adjacent lines removed in the same hunk, with -U1' '
+	test_seq 20 | sed "1d; 3d" >x &&
+
+	# Get plain diff
+	git diff -U1 >plain &&
+	cat >expected <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -1,4 +1,2 @@
+	-1
+	 2
+	-3
+	 4
+	EOF
+	compare_diff_patch expected plain &&
+
+	# Both removed lines match regex - ignore hunk
+	git diff -U1 -I "^[1-3]" >actual &&
+	test_must_be_empty actual &&
+
+	# Both removed lines match some regex - ignore hunk
+	git diff -U1 -I "^1" -I "^3" >actual &&
+	test_must_be_empty actual &&
+
+	# First removed line does not match regex, but is out of context - ignore second change
+	git diff -U1 -I "^[2-3]" >actual &&
+	cat >second-change-ignored <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -1,2 +1 @@
+	-1
+	 2
+	EOF
+	compare_diff_patch second-change-ignored actual &&
+
+	# First removed line does not match any regex, but is out of context - ignore second change
+	git diff -U1 -I "^2" -I "^3" >actual &&
+	compare_diff_patch second-change-ignored actual &&
+
+	# Second removed line does not match regex, but is out of context - ignore first change
+	git diff -U1 -I "^[1-2]" >actual &&
+	cat >first-change-ignored <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -2,3 +1,2 @@
+	 2
+	-3
+	 4
+	EOF
+	compare_diff_patch first-change-ignored actual &&
+
+	# Second removed line does not match any regex, but is out of context - ignore first change
+	git diff -U1 -I "^1" -I "^2" >actual &&
+	compare_diff_patch first-change-ignored actual
+'
+
+test_expect_success 'multiple hunks' '
+	test_seq 20 | sed "1d; 20d" >x &&
+
+	# Get plain diff
+	git diff >plain &&
+	cat >expected <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -1,4 +1,3 @@
+	-1
+	 2
+	 3
+	 4
+	@@ -17,4 +16,3 @@
+	 17
+	 18
+	 19
+	-20
+	EOF
+	compare_diff_patch expected plain &&
+
+	# Ignore both hunks (single regex)
+	git diff -I "^[12]" >actual &&
+	test_must_be_empty actual &&
+
+	# Ignore both hunks (multiple regexes)
+	git diff -I "^1" -I "^2" >actual &&
+	test_must_be_empty actual &&
+
+	# Only ignore first hunk (single regex)
+	git diff -I "^1" >actual &&
+	cat >first-hunk-ignored <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -17,4 +16,3 @@
+	 17
+	 18
+	 19
+	-20
+	EOF
+	compare_diff_patch first-hunk-ignored actual &&
+
+	# Only ignore first hunk (multiple regexes)
+	git diff -I "^0" -I "^1" >actual &&
+	compare_diff_patch first-hunk-ignored actual &&
+
+	# Only ignore second hunk (single regex)
+	git diff -I "^2" >actual &&
+	cat >second-hunk-ignored <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -1,4 +1,3 @@
+	-1
+	 2
+	 3
+	 4
+	EOF
+	compare_diff_patch second-hunk-ignored actual &&
+
+	# Only ignore second hunk (multiple regexes)
+	git diff -I "^2" -I "^3" >actual &&
+	compare_diff_patch second-hunk-ignored actual
+'
+
+test_expect_success 'multiple hunks, with --ignore-blank-lines' '
+	echo >x &&
+	test_seq 21 >>x &&
+
+	# Get plain diff
+	git diff >plain &&
+	cat >expected <<-EOF &&
+	diff --git a/x b/x
+	--- a/x
+	+++ b/x
+	@@ -1,3 +1,4 @@
+	+
+	 1
+	 2
+	 3
+	@@ -18,3 +19,4 @@
+	 18
+	 19
+	 20
+	+21
+	EOF
+	compare_diff_patch expected plain &&
+
+	# -I does not override --ignore-blank-lines - ignore both hunks (single regex)
+	git diff --ignore-blank-lines -I "^21" >actual &&
+	test_must_be_empty actual &&
+
+	# -I does not override --ignore-blank-lines - ignore both hunks (multiple regexes)
+	git diff --ignore-blank-lines -I "^21" -I "^12" >actual &&
+	test_must_be_empty actual
+'
+
+test_expect_success 'diffstat' '
+	test_seq 20 | sed "s/^5/0/p; s/^15/10/; 16d" >x &&
+
+	# Get plain diffstat
+	git diff --stat >actual &&
+	cat >expected <<-EOF &&
+	 x | 6 +++---
+	 1 file changed, 3 insertions(+), 3 deletions(-)
+	EOF
+	test_cmp expected actual &&
+
+	# Ignore both hunks (single regex)
+	git diff --stat -I "^[0-5]" >actual &&
+	test_must_be_empty actual &&
+
+	# Ignore both hunks (multiple regexes)
+	git diff --stat -I "^0" -I "^1" -I "^5" >actual &&
+	test_must_be_empty actual &&
+
+	# Only ignore first hunk (single regex)
+	git diff --stat -I "^[05]" >actual &&
+	cat >expected <<-EOF &&
+	 x | 3 +--
+	 1 file changed, 1 insertion(+), 2 deletions(-)
+	EOF
+	test_cmp expected actual &&
+
+	# Only ignore first hunk (multiple regexes)
+	git diff --stat -I "^0" -I "^5" >actual &&
+	test_cmp expected actual &&
+
+	# Only ignore second hunk (single regex)
+	git diff --stat -I "^1" >actual &&
+	cat >expected <<-EOF &&
+	 x | 3 ++-
+	 1 file changed, 2 insertions(+), 1 deletion(-)
+	EOF
+	test_cmp expected actual &&
+
+	# Only ignore second hunk (multiple regexes)
+	git diff --stat -I "^1" -I "^2" >actual &&
+	test_cmp expected actual
+'
+
+test_expect_success 'invalid regexes' '
+	>x &&
+
+	# Single invalid regex
+	git diff -I "^[1" 2>&1 | grep "invalid regex: " &&
+
+	# Two regexes: first invalid, second valid
+	git diff -I "^[1" -I "^1" 2>&1 | grep "invalid regex: " &&
+
+	# Two invalid regexes
+	git diff -I "^[1" -I "^[2" 2>&1 | grep "invalid regex: "
+'
+
+test_done
-- 
2.28.0


  parent reply	other threads:[~2020-10-12  9:18 UTC|newest]

Thread overview: 57+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-01 12:06 [PATCH 0/2] diff: add -I<regex> that ignores matching changes Michał Kępień
2020-10-01 12:06 ` [PATCH 1/2] " Michał Kępień
2020-10-01 18:21   ` Junio C Hamano
2020-10-07 19:48     ` Michał Kępień
2020-10-07 20:08       ` Junio C Hamano
2020-10-01 12:06 ` [PATCH 2/2] t: add -I<regex> tests Michał Kępień
2020-10-01 17:02 ` [PATCH 0/2] diff: add -I<regex> that ignores matching changes Junio C Hamano
2020-10-12  9:17 ` [PATCH v2 0/3] " Michał Kępień
2020-10-12  9:17   ` [PATCH v2 1/3] merge-base, xdiff: zero out xpparam_t structures Michał Kępień
2020-10-12 11:14     ` Johannes Schindelin
2020-10-12 17:09       ` Junio C Hamano
2020-10-12 19:52     ` Junio C Hamano
2020-10-13  6:35       ` Michał Kępień
2020-10-12  9:17   ` [PATCH v2 2/3] diff: add -I<regex> that ignores matching changes Michał Kępień
2020-10-12 11:20     ` Johannes Schindelin
2020-10-12 20:00       ` Junio C Hamano
2020-10-12 20:39         ` Johannes Schindelin
2020-10-12 21:43           ` Junio C Hamano
2020-10-13  6:37             ` Michał Kępień
2020-10-13 15:49               ` Junio C Hamano
2020-10-13  6:36       ` Michał Kępień
2020-10-13 12:02         ` Johannes Schindelin
2020-10-13 15:53           ` Junio C Hamano
2020-10-13 18:45           ` Michał Kępień
2020-10-12 18:01     ` Junio C Hamano
2020-10-13  6:38       ` Michał Kępień
2020-10-12 20:04     ` Junio C Hamano
2020-10-13  6:38       ` Michał Kępień
2020-10-12  9:17   ` Michał Kępień [this message]
2020-10-12 11:49     ` [PATCH v2 3/3] t: add -I<regex> tests Johannes Schindelin
2020-10-13  6:38       ` Michał Kępień
2020-10-13 12:00         ` Johannes Schindelin
2020-10-13 16:00           ` Junio C Hamano
2020-10-13 19:01           ` Michał Kępień
2020-10-15 11:45             ` Johannes Schindelin
2020-10-15  7:24   ` [PATCH v3 0/2] diff: add -I<regex> that ignores matching changes Michał Kępień
2020-10-15  7:24     ` [PATCH v3 1/2] merge-base, xdiff: zero out xpparam_t structures Michał Kępień
2020-10-15  7:24     ` [PATCH v3 2/2] diff: add -I<regex> that ignores matching changes Michał Kępień
2020-10-16 15:32       ` Phillip Wood
2020-10-16 18:04         ` Junio C Hamano
2020-10-19  9:48           ` Michał Kępień
2020-10-16 18:16       ` Junio C Hamano
2020-10-19  9:55         ` Michał Kępień
2020-10-19 17:29           ` Junio C Hamano
2020-10-16 10:00     ` [PATCH v3 0/2] " Johannes Schindelin
2020-10-20  6:48     ` [PATCH v4 " Michał Kępień
2020-10-20  6:48       ` [PATCH v4 1/2] merge-base, xdiff: zero out xpparam_t structures Michał Kępień
2020-10-20  6:48       ` [PATCH v4 2/2] diff: add -I<regex> that ignores matching changes Michał Kępień
2021-02-05 14:13       ` [PATCH 1/2] diff: add an API for deferred freeing Ævar Arnfjörð Bjarmason
2021-02-10 16:00         ` Johannes Schindelin
2021-02-11  3:00           ` Ævar Arnfjörð Bjarmason
2021-02-11  9:40             ` Johannes Schindelin
2021-02-11 10:21               ` Jeff King
2021-02-11 10:45                 ` [PATCH v2 0/2] " Ævar Arnfjörð Bjarmason
2021-02-11 10:45                 ` [PATCH v2 1/2] " Ævar Arnfjörð Bjarmason
2021-02-11 10:45                 ` [PATCH v2 2/2] diff: plug memory leak from regcomp() on {log,diff} -I Ævar Arnfjörð Bjarmason
2021-02-05 14:13       ` [PATCH " Ævar Arnfjörð Bjarmason

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