t: cover flux-dump --async option

Problem: There is no coverage for the new flux-dump --async
option.

Add coverage in t2807-dump-cmd.t.

Author: chu11

t/t2807-dump-cmd.t

@@ -58,6 +58,9 @@ test_expect_success 'unload kvs' '
 test_expect_success 'dump default=kvs-primary checkpoint' '
 	flux dump --checkpoint foo.tar
 '
+test_expect_success 'repeat dump with --fast' '
+	flux dump --fast --checkpoint fast.tar
+'
 test_expect_success 'repeat dump with -q' '
 	flux dump -q --checkpoint foo.tar
 '
@@ -199,6 +202,52 @@ test_expect_success 'run a flux instance, preserving content.sqlite' '
 	flux start -Sstatedir=$(pwd)/test true
 '
 
+#
+# --fast
+#
+
+# N.B. from previous tests, data is already in the content cache
+# and does not "need" to be flushed, thus affects tests below
+test_expect_success 'clear content cache' '
+	flux content dropcache
+'
+test_expect_success 'remove backing file and load content-sqlite' '
+	rm -f content.sqlite &&
+	flux module load content-sqlite
+'
+test_expect_success 'restore content when --fast was used' '
+	flux restore -v --checkpoint fast.tar
+'
+test_expect_success 'unload content-sqlite' '
+	flux content flush &&
+	flux content dropcache &&
+	flux module remove content-sqlite
+'
+# N.B. see notes above on why 4 blobs
+test_expect_success 'count blobs after restore'\'s' implicit garbage collection' '
+	echo 4 >blobcount3.exp &&
+	countblobs >blobcount3.out &&
+	test_cmp blobcount3.exp blobcount3.out
+'
+test_expect_success 'load content-sqlite + kvs and list content' '
+	flux module load content-sqlite &&
+	flux module load kvs &&
+	flux kvs dir -R
+'
+test_expect_success 'verify that exact KVS content was restored' '
+	test $(flux kvs get a.b.c) = "testkey" &&
+	test $(flux kvs get x) = $(cat x.val) &&
+	test $(flux kvs readlink y) = "linkedthing" &&
+	test $(flux kvs readlink z) = "smurf::otherthing" &&
+	test $(flux kvs get w) = "foobar"
+'
+test_expect_success 'unload kvs' '
+	flux module remove kvs
+'
+test_expect_success 'unload content-sqlite' '
+	flux module remove content-sqlite
+'
+
 reader() {
 	local dbdir=$1
         flux start -Sbroker.rc1_path= \
@@ -279,6 +328,9 @@ test_expect_success LONGTEST 'unload kvs' '
 test_expect_success LONGTEST 'dump default=kvs-primary checkpoint' '
 	flux dump --checkpoint bigval.tar
 '
+test_expect_success LONGTEST 'dump default=kvs-primary checkpoint w/ --fast' '
+	flux dump --checkpoint --fast bigvalfast.tar
+'
 test_expect_success LONGTEST 'unload content-sqlite, remove backing, reload content-sqlite' '
 	flux module remove content-sqlite &&
 	rm -f content.sqlite &&
@@ -295,6 +347,22 @@ test_expect_success LONGTEST 'load kvs and check bigval value' '
 test_expect_success LONGTEST 'unload kvs' '
 	flux module remove kvs
 '
+test_expect_success LONGTEST 'unload content-sqlite, remove backing, reload content-sqlite' '
+	flux module remove content-sqlite &&
+	rm -f content.sqlite &&
+	flux module load content-sqlite
+'
+test_expect_success LONGTEST 'restore content from fast dump' '
+	flux restore --checkpoint bigvalfast.tar
+'
+test_expect_success LONGTEST 'load kvs and check bigval value from fast dump' '
+	flux module load kvs &&
+	flux kvs get bigval > bigval.out &&
+	test_cmp bigval.out bigval.exp
+'
+test_expect_success LONGTEST 'unload kvs' '
+	flux module remove kvs
+'
 test_expect_success LONGTEST 'unload content-sqlite' '
 	flux module remove content-sqlite
 '