diff mbox series

[v2,1/2] t5332-multi-pack-reuse.sh: extract pack-objects helper functions

Message ID db3d67bfa38bf3141214619e766d39dc7f709812.1707173415.git.me@ttaylorr.com (mailing list archive)
State Accepted
Commit 7c01878eeb15e8dd75f0262bdfb3249c85a30a4a
Headers show
Series pack-objects: enable multi-pack reuse via feature.experimental | expand

Commit Message

Taylor Blau Feb. 5, 2024, 10:50 p.m. UTC 
Most of the tests in t5332 perform some setup before repeating a common
refrain that looks like:

    : >trace2.txt &&
    GIT_TRACE2_EVENT="$PWD/trace2.txt" \
      git pack-objects --stdout --revs --all >/dev/null &&

    test_pack_reused $objects_nr <trace2.txt &&
    test_packs_reused $packs_nr <trace2.txt

The next commit will add more tests which repeat the above refrain.
Avoid duplicating this invocation even further and prepare for the
following commit by wrapping the above in a helper function called
`test_pack_objects_reused_all()`.

Introduce another similar function `test_pack_objects_reused`, which
expects to read a list of revisions over stdin for tests which need more
fine-grained control of the contents of the pack they generate.

Signed-off-by: Taylor Blau <me@ttaylorr.com>
---
 t/t5332-multi-pack-reuse.sh | 71 +++++++++++++++----------------------
 1 file changed, 29 insertions(+), 42 deletions(-)

Comments

Patrick Steinhardt Feb. 6, 2024, 7:25 a.m. UTC | #1 
On Mon, Feb 05, 2024 at 05:50:19PM -0500, Taylor Blau wrote:
> Most of the tests in t5332 perform some setup before repeating a common
> refrain that looks like:
> 
>     : >trace2.txt &&
>     GIT_TRACE2_EVENT="$PWD/trace2.txt" \
>       git pack-objects --stdout --revs --all >/dev/null &&
> 
>     test_pack_reused $objects_nr <trace2.txt &&
>     test_packs_reused $packs_nr <trace2.txt
> 
> The next commit will add more tests which repeat the above refrain.
> Avoid duplicating this invocation even further and prepare for the
> following commit by wrapping the above in a helper function called
> `test_pack_objects_reused_all()`.
> 
> Introduce another similar function `test_pack_objects_reused`, which
> expects to read a list of revisions over stdin for tests which need more
> fine-grained control of the contents of the pack they generate.
> 
> Signed-off-by: Taylor Blau <me@ttaylorr.com>
> ---
>  t/t5332-multi-pack-reuse.sh | 71 +++++++++++++++----------------------
>  1 file changed, 29 insertions(+), 42 deletions(-)
> 
> diff --git a/t/t5332-multi-pack-reuse.sh b/t/t5332-multi-pack-reuse.sh
> index 2ba788b042..d516062f84 100755
> --- a/t/t5332-multi-pack-reuse.sh
> +++ b/t/t5332-multi-pack-reuse.sh
> @@ -23,6 +23,27 @@ pack_position () {
>  	grep "$1" objects | cut -d" " -f1
>  }
>  
> +# test_pack_objects_reused_all <pack-reused> <packs-reused>
> +test_pack_objects_reused_all () {
> +	: >trace2.txt &&
> +	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
> +		git pack-objects --stdout --revs --all --delta-base-offset \
> +		>/dev/null &&
> +
> +	test_pack_reused "$1" <trace2.txt &&
> +	test_packs_reused "$2" <trace2.txt
> +}
> +
> +# test_pack_objects_reused <pack-reused> <packs-reused>
> +test_pack_objects_reused () {
> +	: >trace2.txt &&
> +	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
> +		git pack-objects --stdout --revs >/dev/null &&
> +
> +	test_pack_reused "$1" <trace2.txt &&
> +	test_packs_reused "$2" <trace2.txt
> +}
> +
>  test_expect_success 'preferred pack is reused for single-pack reuse' '
>  	test_config pack.allowPackReuse single &&
>  
> @@ -34,14 +55,10 @@ test_expect_success 'preferred pack is reused for single-pack reuse' '
>  
>  	git multi-pack-index write --bitmap &&
>  
> -	: >trace2.txt &&
> -	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
> -		git pack-objects --stdout --revs --all >/dev/null &&
> -
> -	test_pack_reused 3 <trace2.txt &&
> -	test_packs_reused 1 <trace2.txt
> +	test_pack_objects_reused_all 3 1
>  '

Sorry for being nitpicky, but now we have the reverse problem where this
function adds `--delta-base-offset`. How about we adapt the helper
function so that it accepts trailing arguments like this:

```
test_pack_objects_reused () {
	local pack_reused="$1"
	local packs_reused="$2"
	shift 2

	: >trace2.txt &&
	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
		git pack-objects --stdout --revs "$@" >/dev/null &&

	test_pack_reused "$pack_reused" <trace2.txt &&
	test_packs_reused "$packs_reused" <trace2.txt
}
```

This merges the two helpers into a single one where callers can decide
by themselves which arguments to pass to git-pack-objects(1).

Patrick
diff mbox series

Patch

diff --git a/t/t5332-multi-pack-reuse.sh b/t/t5332-multi-pack-reuse.sh
index 2ba788b042..d516062f84 100755
--- a/t/t5332-multi-pack-reuse.sh
+++ b/t/t5332-multi-pack-reuse.sh
@@ -23,6 +23,27 @@  pack_position () {
 	grep "$1" objects | cut -d" " -f1
 }
 
+# test_pack_objects_reused_all <pack-reused> <packs-reused>
+test_pack_objects_reused_all () {
+	: >trace2.txt &&
+	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
+		git pack-objects --stdout --revs --all --delta-base-offset \
+		>/dev/null &&
+
+	test_pack_reused "$1" <trace2.txt &&
+	test_packs_reused "$2" <trace2.txt
+}
+
+# test_pack_objects_reused <pack-reused> <packs-reused>
+test_pack_objects_reused () {
+	: >trace2.txt &&
+	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
+		git pack-objects --stdout --revs >/dev/null &&
+
+	test_pack_reused "$1" <trace2.txt &&
+	test_packs_reused "$2" <trace2.txt
+}
+
 test_expect_success 'preferred pack is reused for single-pack reuse' '
 	test_config pack.allowPackReuse single &&
 
@@ -34,14 +55,10 @@  test_expect_success 'preferred pack is reused for single-pack reuse' '
 
 	git multi-pack-index write --bitmap &&
 
-	: >trace2.txt &&
-	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
-		git pack-objects --stdout --revs --all >/dev/null &&
-
-	test_pack_reused 3 <trace2.txt &&
-	test_packs_reused 1 <trace2.txt
+	test_pack_objects_reused_all 3 1
 '
 
+
 test_expect_success 'enable multi-pack reuse' '
 	git config pack.allowPackReuse multi
 '
@@ -57,21 +74,11 @@  test_expect_success 'reuse all objects from subset of bitmapped packs' '
 	^$(git rev-parse A)
 	EOF
 
-	: >trace2.txt &&
-	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
-		git pack-objects --stdout --revs <in >/dev/null &&
-
-	test_pack_reused 6 <trace2.txt &&
-	test_packs_reused 2 <trace2.txt
+	test_pack_objects_reused 6 2 <in
 '
 
 test_expect_success 'reuse all objects from all packs' '
-	: >trace2.txt &&
-	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
-		git pack-objects --stdout --revs --all >/dev/null &&
-
-	test_pack_reused 9 <trace2.txt &&
-	test_packs_reused 3 <trace2.txt
+	test_pack_objects_reused_all 9 3
 '
 
 test_expect_success 'reuse objects from first pack with middle gap' '
@@ -104,12 +111,7 @@  test_expect_success 'reuse objects from first pack with middle gap' '
 	^$(git rev-parse D)
 	EOF
 
-	: >trace2.txt &&
-	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
-		git pack-objects --stdout --delta-base-offset --revs <in >/dev/null &&
-
-	test_pack_reused 3 <trace2.txt &&
-	test_packs_reused 1 <trace2.txt
+	test_pack_objects_reused 3 1 <in
 '
 
 test_expect_success 'reuse objects from middle pack with middle gap' '
@@ -125,12 +127,7 @@  test_expect_success 'reuse objects from middle pack with middle gap' '
 	^$(git rev-parse D)
 	EOF
 
-	: >trace2.txt &&
-	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
-		git pack-objects --stdout --delta-base-offset --revs <in >/dev/null &&
-
-	test_pack_reused 3 <trace2.txt &&
-	test_packs_reused 1 <trace2.txt
+	test_pack_objects_reused 3 1 <in
 '
 
 test_expect_success 'omit delta with uninteresting base (same pack)' '
@@ -160,10 +157,6 @@  test_expect_success 'omit delta with uninteresting base (same pack)' '
 	^$base
 	EOF
 
-	: >trace2.txt &&
-	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
-		git pack-objects --stdout --delta-base-offset --revs <in >/dev/null &&
-
 	# We can only reuse the 3 objects corresponding to "other" from
 	# the latest pack.
 	#
@@ -175,8 +168,7 @@  test_expect_success 'omit delta with uninteresting base (same pack)' '
 	# The remaining objects from the other pack are similarly not
 	# reused because their objects are on the uninteresting side of
 	# the query.
-	test_pack_reused 3 <trace2.txt &&
-	test_packs_reused 1 <trace2.txt
+	test_pack_objects_reused 3 1 <in
 '
 
 test_expect_success 'omit delta from uninteresting base (cross pack)' '
@@ -189,15 +181,10 @@  test_expect_success 'omit delta from uninteresting base (cross pack)' '
 
 	git multi-pack-index write --bitmap --preferred-pack="pack-$P.idx" &&
 
-	: >trace2.txt &&
-	GIT_TRACE2_EVENT="$PWD/trace2.txt" \
-		git pack-objects --stdout --delta-base-offset --all >/dev/null &&
-
 	packs_nr="$(find $packdir -type f -name "pack-*.pack" | wc -l)" &&
 	objects_nr="$(git rev-list --count --all --objects)" &&
 
-	test_pack_reused $(($objects_nr - 1)) <trace2.txt &&
-	test_packs_reused $packs_nr <trace2.txt
+	test_pack_objects_reused_all $(($objects_nr - 1)) $packs_nr
 '
 
 test_done