The del-task command implemented.

dem/cli/command/add_task_cmd.py

@@ -1,3 +1,6 @@
+"""add-task CLI command implementation."""
+# dem/cli/command/add_task_cmd.py
+
 from dem.core.platform import Platform
 from dem.cli.console import stderr
 

dem/cli/command/del_task_cmd.py

@@ -0,0 +1,26 @@
+"""del-task CLI command implementation."""
+# dem/cli/command/del_task_cmd.py
+
+from dem.core.platform import Platform
+from dem.cli.console import stderr
+
+def execute(platform: Platform, dev_env_name: str, task_name: str) -> None:
+    """ Delete a task from a Development Environment.
+
+        Args:
+            platform -- the Platform
+            dev_env_name -- the Development Environment name
+            task_name -- the task name
+    """
+    dev_env = platform.get_dev_env_by_name(dev_env_name)
+    if dev_env is None:
+        stderr.print(f"[red]Error: Development Environment '{dev_env_name}' not found![/]")
+        return
+
+    try:
+        dev_env.del_task(task_name)
+    except KeyError as e:
+        stderr.print(f"[red] Error: {str(e)}[/]")
+        return
+
+    platform.flush_dev_env_properties()

dem/cli/main.py

@@ -10,7 +10,8 @@
                             delete_cmd, rename_cmd, run_cmd, export_cmd, clone_cmd, add_reg_cmd, \
                             list_reg_cmd, del_reg_cmd, add_cat_cmd, list_cat_cmd, del_cat_cmd, \
                             add_host_cmd, set_default_cmd, uninstall_cmd, install_cmd, assign_cmd, \
-                            init_cmd, list_host_cmd, del_host_cmd, list_tools_cmd, add_task_cmd
+                            init_cmd, list_host_cmd, del_host_cmd, list_tools_cmd, add_task_cmd, \
+                            del_task_cmd
 from dem.cli.console import stdout
 from dem.core.platform import Platform
 from dem.core.exceptions import InternalError
@@ -89,6 +90,23 @@ def autocomplete_host_name(incomplete: str) -> Generator:
             if host_config["name"].startswith(incomplete) or (incomplete == ""):
                 yield host_config["name"]
 
+def autocomplete_task_name(ctx: typer.Context, incomplete: str) -> Generator:
+    """ 
+    Autocomplete the input Task name with the available matching Task names.
+
+    Return with the matching Task name by a Generator.
+
+    Args:
+        incomplete -- the parameter the user supplied so far when the tab was pressed
+    """
+    dev_env_name = ctx.params.get("dev_env_name", None)
+    if platform is not None and dev_env_name is not None:
+        for dev_env in platform.local_dev_envs:
+            if dev_env.name == dev_env_name:
+                for task_name in dev_env.tasks:
+                    if task_name.startswith(incomplete) or (incomplete == ""):
+                        yield task_name
+
 # DEM commands
 @typer_cli.command()
 def add_task(dev_env_name: Annotated[str, typer.Argument(help="Name of the Development Environment to add the task to.",
@@ -105,6 +123,20 @@ def add_task(dev_env_name: Annotated[str, typer.Argument(help="Name of the Devel
         add_task_cmd.execute(platform, dev_env_name, task_name, command)
     else:
         raise InternalError("Error: The platform hasn't been initialized properly!")
+
+@typer_cli.command()
+def del_task(dev_env_name: Annotated[str, typer.Argument(help="Name of the Development Environment to delete the task from.",
+                                                         autocompletion=autocomplete_dev_env_name)],
+             task_name: Annotated[str, typer.Argument(help="Name of the task to delete.",
+                                                      autocompletion=autocomplete_task_name)]) -> None:
+    """
+    Delete a task from the Development Environment.
+    """
+    if platform:
+        del_task_cmd.execute(platform, dev_env_name, task_name)
+    else:
+        raise InternalError("Error: The platform hasn't been initialized properly!")
+
 @typer_cli.command()
 def set_default(dev_env_name: Annotated[str, 
                                      typer.Argument(help="The name of the Development Environment to set as default.",

dem/core/dev_env.py

@@ -69,8 +69,30 @@ def assign_tool_image_instances(self, tool_images: ToolImages) -> None:
             self.tool_images.append(tool_image)
 
     def add_task(self, task_name: str, command: str) -> None:
+        """ Add a task to the Development Environment.
+
+            If the task already exists, it will be overwritten.
+
+            Args:
+                task_name -- the task name
+                command -- the command
+        """
         self.tasks[task_name] = command
 
+    def del_task(self, task_name: str) -> None:
+        """ Delete a task from the Development Environment.
+
+            Args:
+                task_name -- the task name
+
+            Exceptions:
+                KeyError -- if the task doesn't exist
+        """
+        if task_name in self.tasks:
+            del self.tasks[task_name]
+        else:
+            raise KeyError(f"Task [bold]{task_name}[/] not found.")
+
     def get_tool_image_status(self) -> Status:
         """ Get the status of the Tool Images.
 

docs/commands.md

@@ -136,6 +136,21 @@ Delete the Dev Env descriptor from the local descriptor storage. If the Dev Env
 
 ---
 
+## **`dem del-task DEV_ENV_NAME TASK_NAME`**
+
+**Description:**
+
+Delete a task from the Development Environment.
+
+**Arguments:**
+
+| Argument         | Description                                             | Required        |
+|------------------|---------------------------------------------------------|:---------------:|
+| `DEV_ENV_NAME`   | Name of the Development Environment.                    | :material-check:|
+| `TASK_NAME`      | Name of the task to delete.                             | :material-check:|
+
+---
+
 ## **`dem export DEV_ENV_NAME [PATH_TO_EXPORT]`**
 
 **Description:**

mkdocs.yml

@@ -94,11 +94,13 @@ nav:
   - 'basics.md'
   - Commands: 
     - 'DevEnv Management':
+      - 'add-task': 'commands/#dem-add-task-dev_env_name-task_name-command'
       - 'assign': 'commands/#dem-assign-dev_env_name-project_path'
       - 'clone': 'commands/#dem-clone-dev_env_name'
       - 'cp': 'commands/#dem-cp-dev_env_name-new_dev_env_name'
       - 'create': 'commands/#dem-create-dev_env_name'
       - 'delete': 'commands/#dem-delete-dev_env_name'
+      - 'del-task': 'commands/#dem-del-task-dev_env_name-task_name'
       - 'export': 'commands/#dem-export-dev_env_name-path_to_export'
       - 'import': 'commands/#dem-import-path_to_dev_env'
       - 'info': 'commands/#dem-info-dev_env_name-options-catalog_names'

tests/cli/test_add_task_cmd.py

@@ -7,7 +7,7 @@
 
 # Test framework
 from typer.testing import CliRunner
-from unittest.mock import patch, MagicMock, call
+from unittest.mock import patch, MagicMock
 
 ## Global test variables
 

tests/cli/test_del_task_cmd.py

@@ -0,0 +1,71 @@
+"""Unit tests for the del-task CLI command."""
+# tests/cli/test_del_task_cmd.py
+
+# Unit under test:
+import dem.cli.main as main
+import dem.cli.command.del_task_cmd as del_task_cmd
+
+# Test framework
+from typer.testing import CliRunner
+from unittest.mock import patch, MagicMock, call
+
+## Global test variables
+
+# In order to test stdout and stderr separately, the stderr can't be mixed into 
+# the stdout.
+runner = CliRunner(mix_stderr=False)
+
+def test_del_task_cmd() -> None:
+    # Setup
+    mock_platform = MagicMock()
+    main.platform = mock_platform
+
+    mock_dev_env = MagicMock()
+    mock_platform.get_dev_env_by_name.return_value = mock_dev_env
+
+    # Run
+    result = runner.invoke(main.typer_cli, ["del-task", "my-dev-env", "my-task"])
+
+    # Check
+    assert result.exit_code == 0
+
+    mock_platform.get_dev_env_by_name.assert_called_once_with("my-dev-env")
+    mock_dev_env.del_task.assert_called_once_with("my-task")
+    mock_platform.flush_dev_env_properties.assert_called_once()
+
+@patch("dem.cli.command.del_task_cmd.stderr")
+def test_del_task_cmd_dev_env_not_found(mock_stderr: MagicMock) -> None:
+    # Setup
+    mock_platform = MagicMock()
+    main.platform = mock_platform
+
+    mock_platform.get_dev_env_by_name.return_value = None
+
+    # Run
+    result = runner.invoke(main.typer_cli, ["del-task", "my-dev-env", "my-task"])
+
+    # Check
+    assert result.exit_code == 0
+
+    mock_platform.get_dev_env_by_name.assert_called_once_with("my-dev-env")
+    mock_stderr.print.assert_called_once_with("[red]Error: Development Environment 'my-dev-env' not found![/]")
+
+@patch("dem.cli.command.del_task_cmd.stderr")
+def test_del_task_cmd_task_not_found(mock_stderr: MagicMock) -> None:
+    # Setup
+    mock_platform = MagicMock()
+    main.platform = mock_platform
+
+    mock_dev_env = MagicMock()
+    mock_platform.get_dev_env_by_name.return_value = mock_dev_env
+    mock_dev_env.del_task.side_effect = KeyError("Task [bold]my-task[/] not found.")
+
+    # Run
+    result = runner.invoke(main.typer_cli, ["del-task", "my-dev-env", "my-task"])
+
+    # Check
+    assert result.exit_code == 0
+
+    mock_platform.get_dev_env_by_name.assert_called_once_with("my-dev-env")
+    mock_dev_env.del_task.assert_called_once_with("my-task")
+    mock_stderr.print.assert_called_once_with("[red] Error: \'Task [bold]my-task[/] not found.\'[/]")

tests/cli/test_main.py

@@ -132,6 +132,39 @@ def test_autocomplete_host_name() -> None:
 
     mock_platform.hosts.list_host_configs.assert_called_once()
 
+def test_autocomplete_task_name() -> None:
+    # Test setup
+    mock_platform = MagicMock()
+    mock_dev_env1 = MagicMock()
+    mock_dev_env1.name = "dev_env_1"
+    mock_dev_env1.tasks = {
+        "test": "test",
+        "task": "command"
+    }
+    mock_dev_env2 = MagicMock()
+    mock_dev_env2.name = "dev_env_2"
+    mock_platform.local_dev_envs = [
+        mock_dev_env1,
+        mock_dev_env2
+    ]
+
+    mock_ctx = MagicMock()
+    mock_ctx.params = {
+        "dev_env_name": "dev_env_1"
+    }
+
+    main.platform = mock_platform
+
+    expected_completions = [mock_dev_env1.tasks["test"]]
+
+    # Run unit under test
+    actual_completions = []
+    for result in main.autocomplete_task_name(mock_ctx, "tes"):
+        actual_completions.append(result)
+
+    # Check expectations
+    assert expected_completions == actual_completions
+
 @patch("dem.cli.main.__app_name__", "axem-dem")
 @patch("dem.cli.main.stdout.print")
 @patch("dem.cli.main.importlib.metadata.version")
@@ -199,6 +232,7 @@ def test_platform_not_initialized() -> None:
 
     units_to_test = {
         main.add_task: [test_dev_env_name, test_name, test_command],
+        main.del_task: [test_dev_env_name, test_name],
         main.set_default: [test_dev_env_name],
         main.list_: [],
         main.list_tools: [],

tests/core/test_dev_env.py

@@ -166,6 +166,51 @@ def test_DevEnv_add_task() -> None:
     # Check expectations
     assert test_dev_env.tasks[test_task_name] == test_command
 
+def test_DevEnv_del_task() -> None:
+    # Test setup
+    test_descriptor = {
+        "name": "test_name",
+        "installed": "True",
+        "tools": [MagicMock()],
+        "tasks": {
+            "test_task_name1": "test_task_command1",
+            "test_task_name2": "test_task_command2",
+            "test_task_name3": "test_task_command3"
+        }
+    }
+    test_dev_env = dev_env.DevEnv(test_descriptor)
+
+    test_task_name = "test_task_name2"
+
+    # Run unit under test
+    test_dev_env.del_task(test_task_name)
+
+    # Check expectations
+    assert test_task_name not in test_dev_env.tasks
+
+def test_DevEnv_del_task_not_existing() -> None:
+    # Test setup
+    test_descriptor = {
+        "name": "test_name",
+        "installed": "True",
+        "tools": [MagicMock()],
+        "tasks": {
+            "test_task_name1": "test_task_command1",
+            "test_task_name2": "test_task_command2",
+            "test_task_name3": "test_task_command3"
+        }
+    }
+    test_dev_env = dev_env.DevEnv(test_descriptor)
+
+    test_task_name = "test_task_name4"
+
+    # Run unit under test
+    with pytest.raises(KeyError) as exc_info:
+        test_dev_env.del_task(test_task_name)
+
+    # Check expectations
+    assert str(exc_info.value) == f"\'Task [bold]{test_task_name}[/] not found.\'"
+
 @patch.object(dev_env.DevEnv, "__init__")
 def test_DevEnv_get_tool_image_status(mock___init__: MagicMock) -> None:
     # Test setup