diff --git a/tests/testthat.R b/tests/testthat.R
new file mode 100644
index 0000000..c01854f
--- /dev/null
+++ b/tests/testthat.R
@@ -0,0 +1,12 @@
+# This file is part of the standard setup for testthat.
+# It is recommended that you do not modify it.
+#
+# Where should you do additional test configuration?
+# Learn more about the roles of various files in:
+# * https://r-pkgs.org/tests.html
+# * https://testthat.r-lib.org/reference/test_package.html#special-files
+
+library(testthat)
+library(clustSIGNAL)
+
+test_check("clustSIGNAL")
diff --git a/tests/testthat/test_conditions.R b/tests/testthat/test_conditions.R
new file mode 100644
index 0000000..c2b6a76
--- /dev/null
+++ b/tests/testthat/test_conditions.R
@@ -0,0 +1,66 @@
+# test_that("Checking dimensions of neighbours matrix", {
+#     data(example)
+#     cells <- "uniqueID"
+#     samples <- "sample_id"
+#     NN <- 30
+#     out <- clustSIGNAL::neighbourDetect(spe, samples, NN, cells,
+#                                         sort = TRUE)
+#
+#     testthat::expect_equal(
+#         dim(out$nnCells),
+#         as.integer(c(ncol(spe), NN + 1))
+#     )
+# })
+#
+# test_that("Checking neighbours detected for all cells", {
+#     data(example)
+#     cells <- "uniqueID"
+#     samples <- "sample_id"
+#     NN <- 30
+#     out <- clustSIGNAL::neighbourDetect(spe, samples, NN, cells,
+#                                         sort = TRUE)
+#
+#     testthat::expect_identical(
+#         as.character(out$nnCells[, 1]),
+#         spe[[cells]]
+#     )
+# })
+
+test_that(
+    "Expecting error when wrong column name given for samples", {
+        data(example)
+        samples <- "wrongID"
+        cells <- "uniqueID"
+
+        testthat::expect_error(
+            suppressWarnings(clustSIGNAL(spe, samples, cells))
+        )
+    }
+)
+
+test_that(
+    "Expecting error when wrong column name given for cells", {
+        data(example)
+        samples <- "sample_id"
+        cells <- "wrongID"
+
+        testthat::expect_error(
+            suppressWarnings(clustSIGNAL(spe, samples, cells))
+        )
+    }
+)
+
+test_that(
+    "Expecting error when spatial coordinates missing", {
+        data(example)
+        samples <- "sample_id"
+        cells <- "uniqueID"
+        colData(spe) <- cbind(colData(spe), spatialCoords(spe))
+        spatialCoords(spe) <- NULL
+
+        testthat::expect_error(
+            suppressWarnings(clustSIGNAL(spe, samples, cells))
+        )
+    }
+)
+