better maxar authentication handling

src/coincident/search/stac.py

@@ -25,6 +25,11 @@
 except maxar_platform.session.NoSessionCredentials:
     msg_noauth = "Unable to authenticate with Maxar API. Please set MAXAR_API_KEY environment variable."
     warnings.warn(msg_noauth, stacklevel=2)
+except maxar_platform.exceptions.UnAuthorizedException:
+    msg_noauth = (
+        "Unable to authenticate with Maxar API. Please check MAXAR_API_KEY is valid."
+    )
+    warnings.warn(msg_noauth, stacklevel=2)
 
 
 def _filter_assets(assets: gpd.GeoDataFrame) -> dict[str, str]:

tests/test_search.py

@@ -9,6 +9,13 @@
 # Decorate tests requiring internet (slow & flaky)
 network = pytest.mark.network
 
+try:
+    import maxar_platform.discovery  # noqa: F401
+except:  # noqa: E722
+    maxar_authenticated = pytest.mark.skip(
+        reason="unable to authenticate with maxar API"
+    )
+
 
 @pytest.fixture
 def aoi():
@@ -75,6 +82,7 @@ def test_cascading_search(aoi):
 
 # TODO: add more assertions / tests for this section
 @network
+@maxar_authenticated
 @pytest.mark.filterwarnings("ignore:Server does not conform")
 def test_maxar_search(aoi):
     gf = coincident.search.search(
@@ -91,6 +99,7 @@ def test_maxar_search(aoi):
 
 
 @network
+@maxar_authenticated
 def test_maxar_large_aoi(large_aoi):
     gf = coincident.search.search(
         dataset="maxar",