Make predefined symbols safer

We still need to create a parallel processing cluster _after_ creating a
compiled model that is moved to a user defined location, at least I did
not find another way to make it work. This is not a problem with
parallel processing without a cluster, which is not available on
Windows.

2 files changed, 54 insertions, 0 deletions

diff --git a/tests/testthat/print_mmkin_sfo_sfo_dmta.txt b/tests/testthat/print_mmkin_sfo_sfo_dmta.txt
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/tests/testthat/print_mmkin_sfo_sfo_dmta.txt
diff --git a/tests/testthat/test_compiled_symbols.R b/tests/testthat/test_compiled_symbols.R
new file mode 100644
index 00000000..e5f151eb
--- /dev/null
+++ b/tests/testthat/test_compiled_symbols.R
@@ -0,0 +1,54 @@
+context("Use of precompiled symbols in mkinpredict")
+
+test_that("We can safely use compiled code", {
+
+  # Generate temporary DLL
+  sfo_sfo_tmp <- mkinmod(DMTA = mkinsub("SFO", to = "M23"),
+    M23 = mkinsub("SFO"))
+
+  # Generate temporary DLL and move to user specified location
+  if (!dir.exists("test_dlls")) dir.create("test_dlls")
+  sfo_sfo_dll <- mkinmod(DMTA = mkinsub("SFO", to = "M23"),
+    M23 = mkinsub("SFO"),
+    dll_dir = "test_dlls",
+    name = "sfo_sfo",
+    unload = TRUE, overwrite = TRUE
+  )
+
+  if (Sys.info()["sysname"] != "Windows") {
+    # mclapply using forks
+    expect_known_output(
+      mmkin(list(sfo_sfo_dll), dmta_ds, cores = n_cores, quiet = TRUE),
+      "print_mmkin_sfo_sfo_dmta.txt"
+    )
+
+    # cluster describing itself as socket cluster
+    cl_fork <- parallel::makeForkCluster(n_cores)
+    expect_known_output(
+      mmkin(list(sfo_sfo_tmp), dmta_ds, cluster = cl_fork, quiet = TRUE),
+      "print_mmkin_sfo_sfo_dmta.txt"
+    )
+    expect_known_output(
+      mmkin(list(sfo_sfo_dll), dmta_ds, cluster = cl_fork, quiet = TRUE),
+      "print_mmkin_sfo_sfo_dmta.txt"
+    )
+    parallel::stopCluster(cl_fork)
+  }
+
+  # PSOCK cluster
+  cl_psock <- parallel::makePSOCKcluster(n_cores)
+  expect_known_output(
+    mmkin(list(sfo_sfo_tmp), dmta_ds, cluster = cl_psock, quiet = TRUE),
+    "print_mmkin_sfo_sfo_dmta.txt"
+  )
+  expect_known_output(
+    mmkin(list(sfo_sfo_dll), dmta_ds, cluster = cl_psock, quiet = TRUE),
+    "print_mmkin_sfo_sfo_dmta.txt"
+  )
+  parallel::stopCluster(cl_psock)
+
+  # Clean up
+  expect_true(file.remove("test_dlls/sfo_sfo.so"))
+  expect_true(file.remove("test_dlls"))
+})
+