Make kedro viz also do what kedro viz run does (#1790)

Signed-off-by: Deepyaman Datta <deepyaman.datta@utexas.edu>

RELEASE.md

@@ -11,6 +11,7 @@ Please follow the established format:
 
 - Fix a bug on metadata panel when preview data is unavailable. (#1794)
 - Update Compatibility/Support Matrix in README. (#1774)
+- Update CLI command to support both `kedro viz run` and `kedro viz`. (#1790)
 
 # Release 8.0.0
 

package/kedro_viz/launchers/cli.py

@@ -6,6 +6,7 @@
 from typing import Dict
 
 import click
+from click_default_group import DefaultGroup
 from kedro.framework.cli.project import PARAMS_ARG_HELP
 from kedro.framework.cli.utils import KedroCliError, _split_params
 from packaging.version import parse
@@ -41,13 +42,10 @@ def viz_cli():  # pylint: disable=missing-function-docstring
     pass
 
 
-@viz_cli.group(invoke_without_command=True)
+@viz_cli.group(cls=DefaultGroup, default="run", default_if_no_args=True)
 @click.pass_context
-def viz(ctx):
+def viz(ctx):  # pylint: disable=unused-argument
     """Visualise a Kedro pipeline using Kedro viz."""
-    if ctx.invoked_subcommand is None:
-        display_cli_message("\nDid you mean this ? \n kedro viz run \n\n", "yellow")
-        display_cli_message(f"{ctx.get_help()}")
 
 
 @viz.command(context_settings={"help_option_names": ["-h", "--help"]})

package/requirements.txt

@@ -1,15 +1,16 @@
-packaging~=23.0
-kedro>=0.18.0
-ipython>=7.0.0, <9.0
+aiofiles>=22.1.0
+click-default-group
 fastapi>=0.100.0,<0.200.0
 fsspec>=2021.4
-aiofiles>=22.1.0
-uvicorn[standard]~=0.27.1
-watchgod~=0.8.2
-plotly>=4.0
-pandas>=1.3
-sqlalchemy>=1.4, <3
-strawberry-graphql>=0.192.0, <1.0
+ipython>=7.0.0, <9.0
+kedro>=0.18.0
 networkx>=2.5
 orjson~=3.9
+packaging~=23.0
+pandas>=1.3
+plotly>=4.0
 secure>=0.3.0
+sqlalchemy>=1.4, <3
+strawberry-graphql>=0.192.0, <1.0
+uvicorn[standard]~=0.27.1
+watchgod~=0.8.2

package/tests/test_launchers/test_cli.py

@@ -76,6 +76,20 @@ def mock_project_path(mocker):
 @pytest.mark.parametrize(
     "command_options,run_server_args",
     [
+        (
+            ["viz"],
+            {
+                "host": "127.0.0.1",
+                "port": 4141,
+                "load_file": None,
+                "save_file": None,
+                "pipeline_name": None,
+                "env": None,
+                "autoreload": False,
+                "ignore_plugins": False,
+                "extra_params": {},
+            },
+        ),
         (
             ["viz", "run"],
             {
@@ -279,22 +293,21 @@ def test_viz_command_group(mocker, mock_click_echo):
     runner = CliRunner()
 
     with runner.isolated_filesystem():
-        runner.invoke(cli.viz_cli, ["viz"])
-
-    mock_click_echo_calls = [
-        call("\x1b[33m\nDid you mean this ? \n kedro viz run \n\n\x1b[0m"),
-        call(
-            "Usage: Kedro-Viz viz [OPTIONS] COMMAND [ARGS]...\n\n  "
-            "Visualise a Kedro pipeline using Kedro viz.\n\n"
-            "Options:\n  --help  Show this message and exit.\n\n"
-            "Commands:\n  build   Create build directory of local Kedro Viz "
-            "instance with Kedro...\n  "
-            "deploy  Deploy and host Kedro Viz on provided platform\n  "
-            "run     Launch local Kedro Viz instance\x1b[0m"
-        ),
-    ]
-
-    mock_click_echo.assert_has_calls(mock_click_echo_calls)
+        result = runner.invoke(cli.viz_cli, ["viz", "--help"])
+
+    assert result.output == (
+        "Usage: Kedro-Viz viz [OPTIONS] COMMAND [ARGS]...\n"
+        "\n"
+        "  Visualise a Kedro pipeline using Kedro viz.\n"
+        "\n"
+        "Options:\n"
+        "  --help  Show this message and exit.\n"
+        "\n"
+        "Commands:\n"
+        "  run*    Launch local Kedro Viz instance\n"
+        "  build   Create build directory of local Kedro Viz instance with Kedro...\n"
+        "  deploy  Deploy and host Kedro Viz on provided platform\n"
+    )
 
 
 @pytest.mark.parametrize(