Fix using default interval schedule in prefect deploy (#12833)

Author: serinamarie

src/prefect/cli/_prompts.py

@@ -195,11 +195,19 @@ def prompt_interval_schedule(console):
     """
     Prompt the user for an interval in seconds.
     """
+    default_seconds = 3600
+    # The interval value must be a timedelta object in order to pass validation as a `PositiveDuration` type in `IntervalSchedule`.
+    default_duration = timedelta(seconds=default_seconds)
+
+    # We show the default in the prompt message rather than enabling `show_default=True` here because `rich` displays timedeltas in hours
+    # rather than seconds, which would confuse users since we ask them to enter the interval in seconds.
     interval = IntervalValuePrompt.ask(
-        "[bold][green]?[/] Seconds between scheduled runs",
+        f"[bold][green]?[/] Seconds between scheduled runs ({default_seconds})",
         console=console,
-        default="3600",
+        default=default_duration,
+        show_default=False,
     )
+
     return IntervalSchedule(interval=interval)
 
 

tests/cli/test_deploy.py

@@ -2500,6 +2500,41 @@ async def test_deploy_interval_schedule_interactive(
         )
         assert deployment.schedules[0].schedule.interval == timedelta(seconds=42)
 
+    @pytest.mark.usefixtures("interactive_console", "project_dir")
+    async def test_deploy_default_interval_schedule_interactive(
+        self, prefect_client, work_pool
+    ):
+        await run_sync_in_worker_thread(
+            invoke_and_assert,
+            command=(
+                f"deploy ./flows/hello.py:my_flow -n test-name --pool {work_pool.name}"
+            ),
+            user_input=(
+                # Confirm schedule creation
+                readchar.key.ENTER
+                # Select interval schedule
+                + readchar.key.ENTER
+                # Enter default interval
+                + readchar.key.ENTER
+                # accept schedule being active
+                + readchar.key.ENTER
+                # decline adding another schedule
+                + readchar.key.ENTER
+                # decline save
+                + "n"
+                + readchar.key.ENTER
+            ),
+            expected_code=0,
+            expected_output_contains=[
+                "Seconds between scheduled runs (3600)",
+            ],
+        )
+
+        deployment = await prefect_client.read_deployment_by_name(
+            "An important name/test-name"
+        )
+        assert deployment.schedules[0].schedule.interval == timedelta(seconds=3600)
+
     @pytest.mark.usefixtures("interactive_console", "project_dir")
     async def test_deploy_cron_schedule_interactive(self, prefect_client, work_pool):
         await run_sync_in_worker_thread(