ENH: writing tests for SysResetIOC

beams/tests/mock_iocs/SysResetIOC.py

@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+from textwrap import dedent
+
+from caproto.server import PVGroup, ioc_arg_parser, pvproperty, run
+
+
+class MockSysResetIOC(PVGroup):
+  """
+  IOC to mock SLACEPICS IOCs with respect to how they increment heartbeat and are reset
+  """
+
+  heartbeat = pvproperty(
+        name="HEARTBEAT",
+        value=0,
+        dtype=int,
+        doc="Represents heartbeat of IOC, monotonically increasing (until reset)")
+  sys_reset = pvproperty(
+        name="SysReset",
+        value=0,
+        dtype=int,
+        doc="Rising edge indicates requested reset, put high to request reset")
+
+  @sys_reset.putter
+  async def sys_reset(self, instance, value):
+      await self.heartbeat.write(0)
+      return 0
+
+  @heartbeat.scan(period=1.0)
+  async def heartbeat(self, instance, async_lib):
+    print(instance.value)
+    await instance.write(instance.value+1)
+
+
+if __name__ == "__main__":
+    ioc_options, run_options = ioc_arg_parser(
+        default_prefix="SysResetTest:", desc=dedent(MockSysResetIOC.__doc__)
+    )
+    ioc = MockSysResetIOC(**ioc_options)
+    run(ioc.pvdb, **run_options)

beams/tests/test_utility_trees.py

@@ -0,0 +1,30 @@
+import time
+from pathlib import Path
+
+import py_trees
+from caproto.tests.conftest import run_example_ioc
+
+from beams.tree_config.utility_trees.reset_ioc import ResetIOCItem
+
+
+def test_sys_reset(request, bt_cleaner):
+    reset_ioc_tree = ResetIOCItem(
+                        ioc_prefix="SysResetTest").get_tree()
+
+    bt_cleaner.register(reset_ioc_tree)
+
+    # start mock IOC # NOTE: assumes test is being run from top level of
+    run_example_ioc(
+        "beams.tests.mock_iocs.SysResetIOC",
+        request=request,
+        pv_to_check="SysResetTest:HEARTBEAT",
+    )   
+
+    reset_ioc_tree.setup_with_descendants()
+    while reset_ioc_tree.status not in (
+        py_trees.common.Status.SUCCESS,
+        py_trees.common.Status.FAILURE,
+    ):
+        for n in reset_ioc_tree.tick():
+            print(n)
+            time.sleep(1)

beams/tree_config/utility_trees/reset_ioc.py

@@ -19,9 +19,10 @@
 @dataclass
 class ResetIOCItem(BaseItem):
     ioc_prefix: str = ""
-    HEARTBEAT_POSTFIX = ":HEARTBEART"
-    SYSRESET_POSTFIX = ":SysReset"
-    HEARTBEAT_KEY_NAME = "heartbeat"
+    # semi static member objects
+    HEARTBEAT_POSTFIX: str = ":HEARTBEART"
+    SYSRESET_POSTFIX: str = ":SysReset"
+    HEARTBEAT_KEY_NAME: str = "heartbeat"
 
     def __post_init__(self):
         # non dataclass PVss
@@ -31,8 +32,10 @@ def __post_init__(self):
 
     def get_tree(self) -> Sequence:
         def check_acquired_current_hbeat():
-            self.hbeat_val.get_value() is not None
-
+            val = self.hbeat_val.get_value() is not None
+            logger.debug(f"checking opur guy as {val}")
+            return val
+
         # get the current heartbeat of IOC
         @wrapped_action_work(loop_period_sec=3.0)
         def cache_hbeat_wfunc():
@@ -61,5 +64,5 @@ def cache_hbeat_wfunc():
 
         root = Sequence(name=self.name,
                         memory=False,
-                        children=[cache_current_heartbeat, send_reset])
+                        children=[cache_current_heartbeat, send_reset.get_tree()])
         return root

beams/tree_config/value.py

@@ -35,6 +35,7 @@ def get_value(self) -> Any:
         return value
 
 
+@dataclass
 class BlackBoardValue(BaseValue):
     bb_name: str = ""
     key_name: str = ""