Create (conditional) integration tests.

tests/testthat/test-integration.R

+test_that("Extraction returns what is needed.",{
+    topd = Sys.getenv("SS_INTEG_TOP_DATA_DIR")
+    projd = Sys.getenv("SS_INTEG_PROJ_DIR")
+    skip_if_not(shiny::isTruthy(topd) && shiny::isTruthy(projd),"Environment variables SS_INTEG_TOP_DATA_DIR and SS_INTEG_PROJ_DIR must be present for this test to work.")
+
+    eo = init(top_data_dir=topd,projects=projd)
+    print(str(eo))
+    m = run(envopts=eo,
+            project="proj",
+            phase=c("setup","comptab"))
+    expect_true(1==1)
+})