Explicitly set accessToken to NULL in all tests

Change-Id: Id98d918b9668a8ea5720e790835a34604c52b350
diff --git a/tests/testthat/test-textMetadata.R b/tests/testthat/test-textMetadata.R
index 9a8610b..2355322 100644
--- a/tests/testthat/test-textMetadata.R
+++ b/tests/testthat/test-textMetadata.R
@@ -1,18 +1,18 @@
 test_that("textMetadata works", {
   skip_if_offline()
-  m <- new("KorAPConnection") %>% textMetadata(c("WUD17/B96/57558", "WUD17/A97/08541"))
+  m <- new("KorAPConnection", accessToken = NULL) %>% textMetadata(c("WUD17/B96/57558", "WUD17/A97/08541"))
   expect("textType" %in% names(m), "textMetadata value should contain a textType column")
 })
 
 
 test_that("textMetadata works for unknown text sigles", {
   skip_if_offline()
-  m <- new("KorAPConnection") %>% textMetadata(c("WUD17/B96/57558", "unknownsigle"))
+  m <- new("KorAPConnection", accessToken = NULL) %>% textMetadata(c("WUD17/B96/57558", "unknownsigle"))
   expect("errors" %in% names(m), "textMetadata should return an errors column if a text does not exist")
 })
 
 test_that("textMetadata works with list valued fields", {
   skip_if_offline()
-  m <- new("KorAPConnection") %>% textMetadata("WUD17/B96/57558")
+  m <- new("KorAPConnection", accessToken = NULL) %>% textMetadata("WUD17/B96/57558")
   expect("staat-gesellschaft\\tbiographien-interviews" == m$textClass[1], "multiple text classes / domnains should be tab separated")
 })