Add a test for tffm0()

1 files changed, 10 insertions, 0 deletions

diff --git a/tests/testthat/test_tffm0.R b/tests/testthat/test_tffm0.R
new file mode 100644
index 00000000..82e1ee94
--- /dev/null
+++ b/tests/testthat/test_tffm0.R
@@ -0,0 +1,10 @@
+test_that("The formation fraction transformation tffm0 is reversible", {
+  ff_example <- c(
+    0.10983681, 0.09035905, 0.08399383
+  )
+  ff_example_trans <- tffm0(ff_example)
+  expect_equal(invtffm0(ff_example_trans), ff_example)
+
+  ff_ex_2_trans <- c(0.5, 0.9, 0.99)
+  expect_true(sum(invtffm0(ff_ex_2_trans)) < 1)
+})