diff --git a/CHANGELOG.md b/CHANGELOG.md
index 2358c648..c9eddcfc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Added
+
+- Add comprehensive test coverage for warning context managers (`ignore()` and `strict()`) ([#832](https://github.com/stac-utils/pystac-client/pull/832))
+
 ### Changed
 
 - Make `get_collection` raise if `collection_id` is empty ([#809](https://github.com/stac-utils/pystac-client/pull/809))
diff --git a/pyproject.toml b/pyproject.toml
index a39c29c9..35166f7b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -110,6 +110,10 @@ select = ["E", "F", "W", "I"]
 [tool.pytest.ini_options]
 markers = "vcr: records network activity"
 addopts = "--benchmark-skip --block-network"
+filterwarnings = [
+    "ignore::ResourceWarning",
+    "ignore::pytest.PytestUnraisableExceptionWarning",
+]
 
 [tool.mypy]
 show_error_codes = true
diff --git a/pystac_client/collection_search.py b/pystac_client/collection_search.py
index b800f3ac..c31cf597 100644
--- a/pystac_client/collection_search.py
+++ b/pystac_client/collection_search.py
@@ -304,17 +304,21 @@ def __init__(
             if any([bbox, datetime, q, query, filter, sortby, fields]):
                 if not self._collection_search_extension_enabled:
                     warnings.warn(
-                        str(DoesNotConformTo("COLLECTION_SEARCH"))
-                        + ". Filtering will be performed client-side where only bbox, "
-                        "datetime, and q arguments are supported"
+                        DoesNotConformTo(
+                            "COLLECTION_SEARCH",
+                            "Filtering will be performed client-side where only bbox, "
+                            "datetime, and q arguments are supported",
+                        )
                     )
                     self._validate_client_side_args()
                 else:
                     if not self._collection_search_free_text_enabled:
                         warnings.warn(
-                            str(DoesNotConformTo("COLLECTION_SEARCH#FREE_TEXT"))
-                            + ". Free-text search is not enabled for collection search"
-                            "Free-text filters will be applied client-side."
+                            DoesNotConformTo(
+                                "COLLECTION_SEARCH#FREE_TEXT",
+                                "Free-text search is not enabled for collection search"
+                                "Free-text filters will be applied client-side.",
+                            )
                         )
 
         else:
diff --git a/pystac_client/warnings.py b/pystac_client/warnings.py
index e744f159..4ad7b228 100644
--- a/pystac_client/warnings.py
+++ b/pystac_client/warnings.py
@@ -79,7 +79,7 @@ def ignore() -> Iterator[None]:
     >>> from pystac_client import Client
     >>> from pystac_client.warnings import ignore
     >>> with ignore():
-    ...     Client.open("https://perfect-api.test")
+    ...     Client.open("https://imperfect-api.test")
 
     For finer-grained control:
 
diff --git a/tests/test_warnings.py b/tests/test_warnings.py
new file mode 100644
index 00000000..b878d628
--- /dev/null
+++ b/tests/test_warnings.py
@@ -0,0 +1,39 @@
+import pytest
+
+from pystac_client import Client
+from pystac_client.warnings import DoesNotConformTo, ignore, strict
+
+from .helpers import TEST_DATA
+
+
+class TestWarningContextManagers:
+    @pytest.mark.filterwarnings("error")
+    def test_ignore_context_manager(self) -> None:
+        """Test that ignore() context manager suppresses warnings."""
+        api = Client.from_file(str(TEST_DATA / "planetary-computer-root.json"))
+        api.remove_conforms_to("COLLECTION_SEARCH")
+
+        with ignore():
+            api.collection_search(limit=10, max_collections=10, q="test")
+
+    @pytest.mark.filterwarnings("error")
+    def test_strict_context_manager(self) -> None:
+        """Test that strict() context manager converts warnings to exceptions."""
+        api = Client.from_file(str(TEST_DATA / "planetary-computer-root.json"))
+        api.remove_conforms_to("COLLECTION_SEARCH")
+
+        with strict():
+            with pytest.raises(DoesNotConformTo, match="COLLECTION_SEARCH"):
+                api.collection_search(limit=10, max_collections=10, q="test")
+
+    def test_ignore_context_manager_cleanup(self) -> None:
+        """Test that ignore() properly restores warning filters after exit."""
+        api = Client.from_file(str(TEST_DATA / "planetary-computer-root.json"))
+        api.remove_conforms_to("COLLECTION_SEARCH")
+
+        with ignore():
+            api.collection_search(limit=10, max_collections=10, q="test")
+
+        with strict():
+            with pytest.raises(DoesNotConformTo, match="COLLECTION_SEARCH"):
+                api.collection_search(limit=10, max_collections=10, q="test")