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Re: Git Test Coverage Report (Mon. Dec 9)

From
René Scharfe <l.s.r@web.de>
Date
Dec 9, 2019, 17:10 UTC
Message-ID
<e47b77b4-7b7a-3d59-9e24-934528c5e297@web.de>
In-Reply-To
<903fcdea-6f08-caf5-77a4-2e82b8585edf@gmail.com>
Am 09.12.19 um 16:36 schrieb Derrick Stolee:
> Uncovered code in 'next' not in 'master'
> --------------------------------------------------------
Show 5 quoted lines
> René Scharfe	0bb313a5 xdiff: unignore changes in function context
> xdiff/xemit.c
> 0bb313a5 223)        xchp->i1 + xchp->chg1 <= s1 &&
> 0bb313a5 224)        xchp->i2 + xchp->chg2 <= s2)
> 0bb313a5 225) xchp = xchp->next;
Hmm, line 223 *is* exercised by t4015.85.

That loop skips ignored changes before function context -- we don't want those. t4015.85 only has an ignored change within function context and 0bb313a5 reveals it, as intended. So for better test coverage we could do something like this. Does it help? (It should, but I'm mystified why 223 shows up in the report.)

-- >8 --
Subject: [PATCH] t4015: improve coverage of function context test

Include an actual function line in the test files to check if context is expanded to include the whole function, and add an ignored change before function context to check if that one stays hidden, while the originally ignored change within function context is shown.

Signed-off-by: René Scharfe <l.s.r@web.de>
---
 t/t4015-diff-whitespace.sh | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/t/t4015-diff-whitespace.sh b/t/t4015-diff-whitespace.sh
index 5888ae5ed3..7a13e1de62 100755
--- a/t/t4015-diff-whitespace.sh
+++ b/t/t4015-diff-whitespace.sh
@@ -2026,19 +2026,24 @@ test_expect_success 'compare mixed whitespace delta across moved blocks' '
 '

 test_expect_success 'combine --ignore-blank-lines with --function-context' '
-	test_write_lines 1 "" 2 3 4 5 >a &&
-	test_write_lines 1    2 3 4   >b &&
+	test_write_lines    1 2 3 "" function 1 2 3 4 5 "" 6 7 8 9 >a &&
+	test_write_lines "" 1 2 3 "" function 1 2 3 4 5    6 7 8   >b &&
 	test_must_fail git diff --no-index \
 		--ignore-blank-lines --function-context a b >actual.raw &&
 	sed -n "/@@/,\$p" <actual.raw >actual &&
 	cat <<-\EOF >expect &&
-	@@ -1,6 +1,4 @@
+	@@ -5,11 +6,9 @@
+	 function
 	 1
-	-
 	 2
 	 3
 	 4
-	-5
+	 5
+	-
+	 6
+	 7
+	 8
+	-9
 	EOF
 	test_cmp expect actual
 '
--
2.24.0
Previous: Derrick StoleeNext: Eric Sunshine
Message 2 of 7 in “Git Test Coverage Report (Mon. Dec 9)”
  1. Derrick StoleeDec 9, 2019
  2. René ScharfeDec 9, 2019
  3. Eric SunshineDec 9, 2019
  4. Derrick StoleeDec 9, 2019
  5. René ScharfeDec 9, 2019
  6. Derrick StoleeDec 9, 2019
  7. Derrick StoleeDec 9, 2019

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