diff --git a/R/add_methods.R b/R/add_methods.R
index 1db39e4..acef103 100644
--- a/R/add_methods.R
+++ b/R/add_methods.R
@@ -236,10 +236,11 @@ add_group_methods <- function()
         }
         else
         {
-            plans <- self$list_plans(filter=sprintf("title eq '%s'", plan_title))
-            if(length(plans) != 1)
+            plans <- self$list_plans()
+            wch <- which(sapply(plans, function(pl) pl$properties$title == plan_title))
+            if(length(wch) != 1)
                 stop("Invalid plan title", call.=FALSE)
-            plans[[1]]
+            plans[[wch]]
         }
     })
 }
diff --git a/tests/testthat/test06_planner.R b/tests/testthat/test06_planner.R
new file mode 100644
index 0000000..9bdab1e
--- /dev/null
+++ b/tests/testthat/test06_planner.R
@@ -0,0 +1,54 @@
+tenant <- Sys.getenv("AZ_TEST_TENANT_ID")
+app <- Sys.getenv("AZ_TEST_NATIVE_APP_ID")
+site_url <- Sys.getenv("AZ_TEST_SHAREPOINT_SITE_URL")
+site_id <- Sys.getenv("AZ_TEST_SHAREPOINT_SITE_ID")
+
+if(tenant == "" || app == "" || site_url == "" || site_id == "")
+    skip("SharePoint tests skipped: Microsoft Graph credentials not set")
+
+if(!interactive())
+    skip("Planner tests skipped: must be in interactive session")
+
+tok <- try(AzureAuth::get_azure_token(
+    c("https://graph.microsoft.com/.default",
+      "openid",
+      "offline_access"),
+    tenant=tenant, app=app, version=2),
+    silent=TRUE)
+if(inherits(tok, "try-error"))
+    skip("Planner tests skipped: no access to tenant")
+
+site <- try(call_graph_endpoint(tok, file.path("sites", site_id)), silent=TRUE)
+if(inherits(site, "try-error"))
+    skip("Planner tests skipped: service not available")
+
+test_that("Planner methods work",
+{
+    site <- get_sharepoint_site(site_url=site_url, tenant=tenant, app=app)
+    expect_is(site, "ms_site")
+
+    grp <- site$get_group()
+
+    plans <- grp$list_plans()
+    expect_is(plans, "list")
+    expect_true(all(sapply(plans, inherits, "ms_plan")))
+
+    plan_title <- plans[[1]]$properties$title
+
+    # filtering not yet implemented
+    expect_error(lstpager <- grp$list_plans(filter=sprintf("title eq '%s'", filter_esc(plan_title)), n=NULL))
+    # expect_is(lstpager, "ms_graph_pager")
+    # plan0 <- lstpager$value
+    # expect_true(length(plan0) == 1 && inherits(plan0[[1]], "ms_plan"))
+
+    plan1 <- grp$get_plan(plan_title=plan_title)
+    expect_is(plan1, "ms_plan")
+
+    bkts <- plan1$list_buckets()
+    expect_is(bkts, "list")
+    expect_true(all(sapply(bkts, inherits, "ms_plan_bucket")))
+
+    tasks <- plan1$list_tasks()
+    expect_is(tasks, "list")
+    expect_true(all(sapply(tasks, inherits, "ms_plan_task")))
+})