tests: reference `seen` wherever `pu` was referenced

As our test suite partially reflects how we work in the Git project, it
is natural that the branch name `pu` was used in a couple places.

Since that branch was renamed to `seen`, let's use the new name
consistently.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

t/t5505-remote.sh

@@ -988,7 +988,7 @@ test_expect_success 'remote set-branches' '
 	+refs/heads/maint:refs/remotes/scratch/maint
 	+refs/heads/master:refs/remotes/scratch/master
 	+refs/heads/next:refs/remotes/scratch/next
-	+refs/heads/pu:refs/remotes/scratch/pu
+	+refs/heads/seen:refs/remotes/scratch/seen
 	+refs/heads/t/topic:refs/remotes/scratch/t/topic
 	EOF
 	sort <<-\EOF >expect.setup-ffonly &&
@@ -998,7 +998,7 @@ test_expect_success 'remote set-branches' '
 	sort <<-\EOF >expect.respect-ffonly &&
 	refs/heads/master:refs/remotes/scratch/master
 	+refs/heads/next:refs/remotes/scratch/next
-	+refs/heads/pu:refs/remotes/scratch/pu
+	+refs/heads/seen:refs/remotes/scratch/seen
 	EOF
 
 	git clone .git/ setbranches &&
@@ -1016,7 +1016,7 @@ test_expect_success 'remote set-branches' '
 		git config --get-all remote.scratch.fetch >config-result &&
 		sort <config-result >../actual.replace &&
 
-		git remote set-branches --add scratch pu t/topic &&
+		git remote set-branches --add scratch seen t/topic &&
 		git config --get-all remote.scratch.fetch >config-result &&
 		sort <config-result >../actual.add-two &&
 
@@ -1028,7 +1028,7 @@ test_expect_success 'remote set-branches' '
 		git config --get-all remote.scratch.fetch >config-result &&
 		sort <config-result >../actual.setup-ffonly &&
 
-		git remote set-branches --add scratch pu &&
+		git remote set-branches --add scratch seen &&
 		git config --get-all remote.scratch.fetch >config-result &&
 		sort <config-result >../actual.respect-ffonly
 	) &&

t/t5516-fetch-push.sh

@@ -747,42 +747,42 @@ test_expect_success 'deletion of a non-existent ref alone does trigger post-rece
 '
 
 test_expect_success 'mixed ref updates, deletes, invalid deletes trigger hooks with correct input' '
-	mk_test_with_hooks testrepo heads/master heads/next heads/pu &&
+	mk_test_with_hooks testrepo heads/master heads/next heads/seen &&
 	orgmaster=$(cd testrepo && git show-ref -s --verify refs/heads/master) &&
 	newmaster=$(git show-ref -s --verify refs/heads/master) &&
 	orgnext=$(cd testrepo && git show-ref -s --verify refs/heads/next) &&
 	newnext=$ZERO_OID &&
-	orgpu=$(cd testrepo && git show-ref -s --verify refs/heads/pu) &&
-	newpu=$(git show-ref -s --verify refs/heads/master) &&
+	orgseen=$(cd testrepo && git show-ref -s --verify refs/heads/seen) &&
+	newseen=$(git show-ref -s --verify refs/heads/master) &&
 	git push testrepo refs/heads/master:refs/heads/master \
-	    refs/heads/master:refs/heads/pu :refs/heads/next \
+	    refs/heads/master:refs/heads/seen :refs/heads/next \
 	    :refs/heads/nonexistent &&
 	(
 		cd testrepo/.git &&
 		cat >pre-receive.expect <<-EOF &&
 		$orgmaster $newmaster refs/heads/master
 		$orgnext $newnext refs/heads/next
-		$orgpu $newpu refs/heads/pu
+		$orgseen $newseen refs/heads/seen
 		$ZERO_OID $ZERO_OID refs/heads/nonexistent
 		EOF
 
 		cat >update.expect <<-EOF &&
 		refs/heads/master $orgmaster $newmaster
 		refs/heads/next $orgnext $newnext
-		refs/heads/pu $orgpu $newpu
+		refs/heads/seen $orgseen $newseen
 		refs/heads/nonexistent $ZERO_OID $ZERO_OID
 		EOF
 
 		cat >post-receive.expect <<-EOF &&
 		$orgmaster $newmaster refs/heads/master
 		$orgnext $newnext refs/heads/next
-		$orgpu $newpu refs/heads/pu
+		$orgseen $newseen refs/heads/seen
 		EOF
 
 		cat >post-update.expect <<-EOF &&
 		refs/heads/master
 		refs/heads/next
-		refs/heads/pu
+		refs/heads/seen
 		EOF
 
 		test_cmp pre-receive.expect pre-receive.actual &&

t/t9902-completion.sh

@@ -494,7 +494,7 @@ test_expect_success '__gitcomp - prefix' '
 '
 
 test_expect_success '__gitcomp - suffix' '
-	test_gitcomp "branch.me" "master maint next pu" "branch." \
+	test_gitcomp "branch.me" "master maint next seen" "branch." \
 		"ma" "." <<-\EOF
 	branch.master.Z
 	branch.maint.Z
@@ -545,7 +545,7 @@ read -r -d "" refs <<-\EOF
 maint
 master
 next
-pu
+seen
 EOF
 
 test_expect_success '__gitcomp_nl - trailing space' '