[PATCH] test-lib-functions: simplify `test_file_not_empty` failure message

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From: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>

The function `test_file_not_empty` asserts that a file exists and is not
empty. When the assertion fails, it complains:

    'foo' is not a non-empty file.

which is difficult to interpret due to the double-negative. To make it
easier to understand the problem, simplify the message by dropping the
double-negative and stating the problem more directly:

    'foo' is empty but should not be

(The full-stop is also dropped from the message to reflect the style of
messages issued by other `test_path_*` functions.)

Note: Technically, the revised message is slightly less accurate since
the function asserts both that the file exists and that it is non-empty,
but the new message talks only about the emptiness of the file, not
whether it exists. A more accurate message might be "'foo' is empty but
should not be (or doesn't exist)", but that's unnecessarily long-winded
and adds little information that the test author couldn't discover by
noticing the file's absence.

Signed-off-by: Eric Sunshine <sunshine@xxxxxxxxxxxxxx>
---

This is a tangential follow-up to the discussion at [1].

[1]: https://lore.kernel.org/git/CAPig+cQ+JNBwydUq0CsTZGs8mHs3L3fJDuSosd+-WdKwWWw=gg@xxxxxxxxxxxxxx/

 t/test-lib-functions.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/test-lib-functions.sh b/t/test-lib-functions.sh
index b5eaf7fdc1..9e97b324c5 100644
--- a/t/test-lib-functions.sh
+++ b/t/test-lib-functions.sh
@@ -991,7 +991,7 @@ test_file_not_empty () {
 	test "$#" = 2 && BUG "2 param"
 	if ! test -s "$1"
 	then
-		echo "'$1' is not a non-empty file."
+		echo "'$1' is empty but should not be"
 		false
 	fi
 }
-- 
2.44.0





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