diff --git a/DESCRIPTION b/DESCRIPTION
index c3c80c7..f5d165e 100644
--- a/DESCRIPTION
+++ b/DESCRIPTION
@@ -18,7 +18,8 @@ Imports:
     magrittr,
     purrr,
     rlang,
-    rpicsa
+    rpicsa,
+    testthat
 Remotes:
     IDEMSInternational/epicsadata,
     IDEMSInternational/rpicsa
\ No newline at end of file
diff --git a/tests/testthat/test-annual_rainfall_summaries.R b/tests/testthat/test-annual_rainfall_summaries.R
new file mode 100644
index 0000000..abbd33f
--- /dev/null
+++ b/tests/testthat/test-annual_rainfall_summaries.R
@@ -0,0 +1,31 @@
+# library(testthat)
+# library(rpicsa)
+# 
+# # Test case 1
+# country <- "zm"
+# station_id <- "01122"
+# summaries <- c("annual_rain")
+# result <- epicsawrap::annual_rainfall_summaries(country, station_id, summaries)
+# 
+# country <- "zm"
+# station_id_2 <- "16"
+# summaries_2 <- c("start_rains", "end_rains", "annual_rain", "seasonal_rain")
+# result_2 <- epicsawrap::annual_rainfall_summaries(country, station_id_2, summaries_2)
+# 
+# test_that("Correct summaries are calculated", {
+#   # Test case 2
+#   expect_no_error(result)
+#   # Test case 3 (add more test cases if needed)
+#   expect_no_error(result_2)
+# })
+# 
+# test_that("Error is thrown if undefined values", {
+#   # Test case 1: Error is thrown if undefined values
+#   expect_error(epicsawrap::annual_rainfall_summaries(country, station_id, "end_season"))
+#   
+#   # Test case 2: Error is thrown if start_ is not calculated but needed
+#   expect_error(epicsawrap::annual_rainfall_summaries(country, station_id_2, c("end_rains", "seasonal_rain")))
+#   
+#   # Test case 3: Warning if both end are given and seasonal wanted
+#   expect_warning(epicsawrap::annual_rainfall_summaries(country, station_id_2, c("start_rains", "end_rains", "end_season", "seasonal_rain")))
+# })
diff --git a/tests/testthat/test-crop_success_probabilities.R b/tests/testthat/test-crop_success_probabilities.R
new file mode 100644
index 0000000..ee41901
--- /dev/null
+++ b/tests/testthat/test-crop_success_probabilities.R
@@ -0,0 +1,34 @@
+# library(testthat)
+# 
+# # External functions call
+# # Test case 1: Test with all parameter
+# result <- epicsawrap::crop_success_probabilities(
+#   country = "zm",
+#   station_id = "16",
+#   planting_dates = c(1, 2, 3),
+#   water_requirements = c(100, 200, 300),
+#   planting_length = 10,
+#   start_before_season = TRUE
+# )
+# 
+# # Test case 2: Test with missing planting_length parameter
+# result_2 <- epicsawrap::crop_success_probabilities(
+#   country = "zm",
+#   station_id = "16",
+#   planting_dates = c(1, 2, 3),
+#   water_requirements = c(100, 200, 300),
+#   start_before_season = TRUE
+# )
+# 
+# # Test case 2: Test with all missing parameters
+# result_3 <- epicsawrap::crop_success_probabilities(
+#   country = "zm",
+#   station_id = "16"
+# )
+# 
+# # Define test cases
+# test_that("crop_success_probabilities returns correct results", {
+#   expect_no_error(result)
+#   expect_no_error(result_2)
+#   expect_no_error(result_3)
+# })
diff --git a/tests/testthat/test-season_start_probabilities.R b/tests/testthat/test-season_start_probabilities.R
new file mode 100644
index 0000000..5f22718
--- /dev/null
+++ b/tests/testthat/test-season_start_probabilities.R
@@ -0,0 +1,20 @@
+# library(testthat)
+# 
+# # External functions call
+# # Test case 1: Test with all parameters
+# result <-
+#   season_start_probabilities(
+#     country = "zm",
+#     station_id = "16",
+#     start_dates = c(10, 20, 100)
+#   )
+# 
+# # Test case 2: Test with missing parameters
+# result_2 <-
+#   season_start_probabilities(country = "zm", station_id = "16")
+# 
+# # Define test cases
+# test_that("season_start_probabilities returns correct results", {
+#   expect_no_error(result)
+#   expect_no_error(result_2)
+# })
\ No newline at end of file
diff --git a/tests/testthat/test-total_temperature_summaries.R b/tests/testthat/test-total_temperature_summaries.R
new file mode 100644
index 0000000..1f5ccd3
--- /dev/null
+++ b/tests/testthat/test-total_temperature_summaries.R
@@ -0,0 +1,27 @@
+# library(testthat)
+# 
+# # Test case 1: Test with to = "annual"
+# result <- total_temperature_summaries(
+#   country = "zm",
+#   station_id = "23",
+#   summaries = c("mean_tmin", "mean_tmax"),
+#   to = "annual"
+# )
+# 
+# # Test case 2: Test with to = "monthly"
+# result_2 <- total_temperature_summaries(
+#   country = "zm",
+#   station_id = "1",
+#   summaries = c("mean_tmin", "mean_tmax"),
+#   to = "monthly"
+# )
+# 
+# # Define test cases
+# test_that("total_temperature_summaries returns correct results", {
+#   # Mock the necessary external functions or datasets if needed
+#   expect_length(result, 2)
+#   expect_length(result_2, 2)
+#   
+#   expect_no_error(result)
+#   expect_no_error(result_2)
+# })
\ No newline at end of file