diff --git a/tests/v2/test_ui_cockpit.py b/tests/v2/test_ui_cockpit.py
new file mode 100644
index 0000000..43ac4a8
--- /dev/null
+++ b/tests/v2/test_ui_cockpit.py
@@ -0,0 +1,46 @@
+from click.testing import CliRunner
+
+from virl.cli.cockpit.commands import cockpit
+from virl.cli.ui.commands import ui
+
+
+class FakeServer:
+    host = "cml.example.local"
+
+
+def test_cockpit_opens_expected_url(monkeypatch):
+    opened = []
+    monkeypatch.setattr("virl.cli.cockpit.commands.VIRLServer", lambda: FakeServer())
+    monkeypatch.setattr("virl.cli.cockpit.commands.webbrowser.open", lambda url: opened.append(url))
+
+    result = CliRunner().invoke(cockpit, [])
+
+    assert result.exit_code == 0
+    assert opened == ["https://cml.example.local:9090"]
+
+
+def test_ui_opens_current_lab_when_present(monkeypatch):
+    opened = []
+    monkeypatch.setattr("virl.cli.ui.commands.VIRLServer", lambda: FakeServer())
+    monkeypatch.setattr("virl.cli.ui.commands.get_cml_client", lambda _server: object())
+    monkeypatch.setattr("virl.cli.ui.commands.get_current_lab", lambda: "lab-123")
+    monkeypatch.setattr("virl.cli.ui.commands.safe_join_existing_lab", lambda _lab_id, _client: object())
+    monkeypatch.setattr("virl.cli.ui.commands.webbrowser.open", lambda url: opened.append(url))
+
+    result = CliRunner().invoke(ui, [])
+
+    assert result.exit_code == 0
+    assert opened == ["https://cml.example.local/lab/lab-123"]
+
+
+def test_ui_does_not_open_when_current_lab_missing(monkeypatch):
+    opened = []
+    monkeypatch.setattr("virl.cli.ui.commands.VIRLServer", lambda: FakeServer())
+    monkeypatch.setattr("virl.cli.ui.commands.get_cml_client", lambda _server: object())
+    monkeypatch.setattr("virl.cli.ui.commands.get_current_lab", lambda: None)
+    monkeypatch.setattr("virl.cli.ui.commands.webbrowser.open", lambda url: opened.append(url))
+
+    result = CliRunner().invoke(ui, [])
+
+    assert result.exit_code == 0
+    assert opened == []
diff --git a/virl/cli/cockpit/commands.py b/virl/cli/cockpit/commands.py
index 5ebd3a8..aa94e9f 100644
--- a/virl/cli/cockpit/commands.py
+++ b/virl/cli/cockpit/commands.py
@@ -1,4 +1,4 @@
-import subprocess
+import webbrowser
 
 import click
 
@@ -12,4 +12,4 @@ def cockpit():
     """
     server = VIRLServer()
     url = "https://{}:9090".format(server.host)
-    subprocess.Popen(["open", url])
+    webbrowser.open(url)
diff --git a/virl/cli/ui/commands.py b/virl/cli/ui/commands.py
index 843a081..d38a6ab 100644
--- a/virl/cli/ui/commands.py
+++ b/virl/cli/ui/commands.py
@@ -1,4 +1,4 @@
-import subprocess
+import webbrowser
 
 import click
 
@@ -20,4 +20,4 @@ def ui():
         lab = safe_join_existing_lab(current_lab, client)
         if lab:
             url = "https://{}/lab/{}".format(server.host, current_lab)
-            subprocess.Popen(["open", url])
+            webbrowser.open(url)