test(stdlib/planner): test readGroup max/min

Author: Faith Chikwekwe

libflux/go/libflux/buildinfo.gen.go

@@ -183,6 +183,10 @@ var sourceHashes = map[string]string{
 	"stdlib/planner/bare_sum_push_test.flux":                                        "2b7d7b048202f54f2ac624b30a069924e2bafda2b8ff0605c29b80aab8aae660",
 	"stdlib/planner/group_count_eval_test.flux":                                     "a55d1190988bd071aa6916f5185c5ec50e7f8e0ee1afd2d6df248dc2258be54f",
 	"stdlib/planner/group_count_push_test.flux":                                     "dfc47c5a9c631ec861e95222299c1239cbe8dfd97fbf580bd4c65f53677e47f5",
+	"stdlib/planner/group_max_eval_test.flux":                                       "b7dff5c8876b112b1906f874199b07be6dfda197d5d9641228810d6174617f39",
+	"stdlib/planner/group_max_push_test.flux":                                       "fb4aa5af71ad86b8dee8bd4493140ed3613792e16a01fa22250b5047b9fb4789",
+	"stdlib/planner/group_min_eval_test.flux":                                       "38b172555d7bc6070016260d48c1d68dd95ad247f2f37ee8d44330b1eb77a3c4",
+	"stdlib/planner/group_min_push_test.flux":                                       "36a0fed0028d419b070c141925d95c63157416933722ddd4b6c2de7cebefc57b",
 	"stdlib/planner/group_sum_eval_test.flux":                                       "0211734f95341f74a038598ed39250d7dd471892948740cbd976ceb0665d211c",
 	"stdlib/planner/group_sum_push_test.flux":                                       "08f828a9ec08c719c7a74059b00bdf7826fbe86fb3b12973d3c95ec73cef0ed1",
 	"stdlib/planner/planner.flux":                                                   "874b09fecfd60485aa9ea0ec878a102934558daafea87617860906b3ec3d5c76",