Add test with negative time without sub-cycling. Close #15802

idaholab · Oct 29, 2020 · d8f1bb1 · d8f1bb1
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diff --git a/test/tests/multiapps/transient_multiapp/gold/main_negative.e b/test/tests/multiapps/transient_multiapp/gold/main_negative.e
diff --git a/test/tests/multiapps/transient_multiapp/gold/main_negative_sub_app0.e b/test/tests/multiapps/transient_multiapp/gold/main_negative_sub_app0.e
diff --git a/test/tests/multiapps/transient_multiapp/gold/main_negative_sub_app1.e b/test/tests/multiapps/transient_multiapp/gold/main_negative_sub_app1.e
diff --git a/test/tests/multiapps/transient_multiapp/gold/main_negative_sub_app2.e b/test/tests/multiapps/transient_multiapp/gold/main_negative_sub_app2.e
diff --git a/test/tests/multiapps/transient_multiapp/gold/main_negative_sub_app3.e b/test/tests/multiapps/transient_multiapp/gold/main_negative_sub_app3.e
diff --git a/test/tests/multiapps/transient_multiapp/tests b/test/tests/multiapps/transient_multiapp/tests
@@ -21,4 +21,14 @@
       detail = "with a time step governed by the master application."
     []
   []
+
+  [test_negative_time]
+    # test that not sub-cycling with negative times does not make the main and sub-app out-of-sync
+    type = 'Exodiff'
+    input = 'dt_from_master.i'
+    exodiff = 'main_negative.e main_negative_sub_app0.e main_negative_sub_app1.e main_negative_sub_app2.e main_negative_sub_app3.e'
+    cli_args = 'Executioner/start_time=-1 sub_app:Executioner/start_time=-1 Outputs/file_base=main_negative'
+    issues = '#15802'
+    requirement = "The system shall support negative times by particularly ensuring that the sub-app properly updates its time without sub-cycling."
+  []
 []