tests: Add test for the lupv example

Change-Id: Ib17f59b5b6ab9704be14e73d203bbab61caada90
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/53903
Reviewed-by: Jason Lowe-Power <power.jg@gmail.com>
Maintainer: Jason Lowe-Power <power.jg@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>

configs/example/lupv/run_lupv.py

@@ -64,6 +64,13 @@ parser.add_argument(
 parser.add_argument(
     "num_cpus", type=int, help="The number of CPU in the system"
 )
+parser.add_argument(
+    "--max-ticks",
+    type=int,
+    required=False,
+    default=m5.MaxTick,
+    help="The maximum number of ticks to simulate. Used for testing.",
+)
 
 args = parser.parse_args()
 
@@ -105,7 +112,7 @@ root = Root(full_system=True, system=board)
 m5.instantiate()
 print("Beginning simulation!")
 
-exit_event = m5.simulate()
+exit_event = m5.simulate(args.max_ticks)
 
 print(
     "Exiting @ tick {} because {}.".format(m5.curTick(), exit_event.getCause())

tests/gem5/gem5_library_example_tests/test_gem5_library_examples.py

@@ -174,3 +174,20 @@ gem5_verify_config(
     valid_hosts=constants.supported_hosts,
     length=constants.long_tag,
 )
+
+gem5_verify_config(
+    name="test-lupv-example",
+    fixtures=(),
+    verifiers=(),
+    config=joinpath(
+        config.base_dir,
+        "configs",
+        "example",
+        "lupv",
+        "run_lupv.py",
+    ),
+    config_args=["timing", "1", "--max-ticks", "1000000000"],
+    valid_isas=(constants.riscv_tag,),
+    valid_hosts=constants.supported_hosts,
+    length=constants.long_tag,
+)