Closes #2581 - enhance test coverage: derive_var_trtemfl.R

tests/testthat/_snaps/compute_scale.md

@@ -7,7 +7,7 @@
       ! Argument `target_range` is missing with no default and `source_range` is not missing.
       i Either both or neither arguments should be specified.
 
----
+# compute_scale Test 7: error if target_range is supplied, but not source_range
 
     Code
       compute_scale(input, target_range = c(0, 100), min_n = 2)

tests/testthat/_snaps/derive_var_trtemfl.md

@@ -34,3 +34,12 @@
       ! `intensity` argument was specified but not `initial_intensity`
       Either both or none of them must be specified.
 
+# derive_var_trtemfl Test 11: error if `group_var` without `subject_keys`
+
+    Code
+      derive_var_trtemfl(adae, group_var = AEGRPID, subject_keys = NULL)
+    Condition
+      Error in `derive_var_trtemfl()`:
+      ! `group_var` argument was specified but not `subject_keys`
+      `subject_keys` argument must be provided when `group_var` is specified.
+

tests/testthat/test-derive_var_trtemfl.R

@@ -194,7 +194,7 @@ test_that("derive_var_trtemfl Test 9: error if `intensity` without `initial_inte
 })
 
 ## Test 10: warning if both `initial_intensity` and `group_var` are specified ----
-test_that("derive_var_trtemfl Test 9: error if `intensity` without `initial_intensity`", {
+test_that("derive_var_trtemfl Test 10: error if `intensity` without `initial_intensity`", {
   expect_warning(
     derive_var_trtemfl(
       adae2,
@@ -204,3 +204,15 @@ test_that("derive_var_trtemfl Test 9: error if `intensity` without `initial_inte
     "`initial_intensity` argument is ignored when `group_var` is specified"
   )
 })
+
+## Test 11: error if `group_var` are specified without `subject_keys` ----
+test_that("derive_var_trtemfl Test 11: error if `group_var` without `subject_keys`", {
+  expect_snapshot(
+    derive_var_trtemfl(
+      adae,
+      group_var = AEGRPID,
+      subject_keys = NULL
+    ),
+    error = TRUE
+  )
+})