1 files changed, 43 insertions, 0 deletions
diff --git a/tests/test_schema.py b/tests/test_schema.py
new file mode 100644
index 0000000..15a5f9b
--- /dev/null
+++ b/tests/test_schema.py
@@ -0,0 +1,43 @@
+from __future__ import annotations
+
+import pytest
+
+from mcp_sd15.errors import InvalidRequestError
+from mcp_sd15.schema import (
+    ControlMode,
+    GuidedImageRequest,
+    ImageSize,
+    InpaintImageRequest,
+    TextToImageRequest,
+)
+
+
+def test_text_request_applies_defaults() -> None:
+    request = TextToImageRequest.create("  a castle  ", default_size="landscape_512")
+    assert request.positive_prompt == "a castle"
+    assert request.negative_prompt == ""
+    assert request.size is ImageSize.LANDSCAPE_512
+    assert request.size.dimensions == (512, 384)
+
+
+@pytest.mark.parametrize("prompt", ["", "   ", None, 3])
+def test_positive_prompt_is_required(prompt: object) -> None:
+    with pytest.raises(InvalidRequestError, match="positive_prompt"):
+        TextToImageRequest.create(prompt)  # type: ignore[arg-type]
+
+
+def test_guided_mode_is_an_enum() -> None:
+    request = GuidedImageRequest.create("cat", "openpose_full", "abc")
+    assert request.control_mode is ControlMode.OPENPOSE_FULL
+    with pytest.raises(InvalidRequestError, match="control_mode"):
+        GuidedImageRequest.create("cat", "canny", "abc")
+
+
+def test_inpaint_requires_both_images() -> None:
+    with pytest.raises(InvalidRequestError, match="mask_image"):
+        InpaintImageRequest.create("repair", "abc", "")
+
+
+def test_arbitrary_dimensions_are_not_accepted() -> None:
+    with pytest.raises(InvalidRequestError, match="size"):
+        TextToImageRequest.create("cat", size="640x480")