add napari plugin manifest validation

.github/workflows/tests.yaml

@@ -20,4 +20,4 @@ jobs:
       - name: Install project
         run: python -m pip install .[testsuite]
       - name: Run unit tests on Python ${{ matrix.python-version }} on ${{ matrix.os }}
-        run: pytest tests -vv --cov
+        run: pytest

pyproject.toml

@@ -60,8 +60,10 @@ linting = [
     "ruff >= 0.3",
 ]
 testsuite = [
+    "npe2",
     "pytest >= 7.1.0",
     "pytest-cov >= 5.0.0",
+    "typer",
 ]
 
 [tool.codespell]
@@ -91,6 +93,9 @@ disallow_subclassing_any = true
 implicit_optional = false
 strict_optional = true
 
+[tool.pytest.ini_options]
+addopts = "-vv --cov looptrace_loci_vis --cov-report term-missing"
+
 [tool.ruff]
 # Black uses line-length = 88, but allows exceptions when breaking the line
 # would lead to other rule violations. Use 100 as a maximum hard limit:

tests/test_manifest_validation.py

@@ -0,0 +1,12 @@
+"""Test that the plugin will be able to be used by Napari."""
+
+import npe2.cli
+import pytest
+import typer
+
+
+def test_plugin_package_manifest_is_valid():
+    try:
+        npe2.cli.validate("looptrace-loci-vis")
+    except typer.Exit as e:
+        pytest.fail(f"Manifest validation failed: {e}")