testsuite: cover content-sqlite metadata access

t/t0012-content-sqlite.t

@@ -27,6 +27,38 @@ test_expect_success 'load content-sqlite module on rank 0' '
 	flux module load content-sqlite
 '
 
+test_expect_success 'store metadata key-val pairs' '
+	flux content metaput foo bar &&
+	flux content metaput foo2 42 &&
+	flux content metaput foo3 "x x x"
+'
+
+test_expect_success 'metadata values are correct' '
+	VAL=$(flux content metaget foo) &&
+	test "$VAL" = "bar" &&
+	VAL=$(flux content metaget foo2) &&
+	test "$VAL" = "42" &&
+	VAL=$(flux content metaget foo3) &&
+	test "$VAL" = "x x x"
+'
+
+test_expect_success 'get unknown metadata fails' '
+	test_must_fail flux content metaget noexist
+'
+
+test_expect_success 'put metata on existing value is allowed' '
+	flux content metaput foo zzz
+'
+
+test_expect_success 'metadata value was updated' '
+	VAL=$(flux content metaget foo) &&
+	test "$VAL" = "zzz"
+'
+
+test_expect_success 'empty metadata key is not allowed' '
+	test_must_fail flux content metaput "" xyz
+'
+
 test_expect_success 'store 100 blobs on rank 0' '
 	store_junk test 100 &&
         TOTAL=`flux module stats --type int --parse count content` &&