Adding first Strawberry test

pyproject.toml

@@ -22,7 +22,6 @@ requires-python = ">=3.10"
 plotting = ["scipy", "matplotlib"]
 # REST service support
 service = ["fastapi>=0.100.0", "uvicorn"]
-# For development tests/docs
 dev = [
     # This syntax is supported since pip 21.2
     # https://github.com/pypa/pip/issues/10393
@@ -41,11 +40,13 @@ dev = [
     "sphinx-copybutton",
     "sphinx-design",
     "sphinxcontrib-openapi",
+    "strawberry-graphql[debug-server]",
+    "strawberry-graphql[fastapi]",
     "tox-direct",
     "types-mock",
     "httpx",
     "myst-parser",
-]
+] # For development tests/docs
 
 [project.scripts]
 scanspec = "scanspec.cli:cli"

src/scanspec/schema.py

@@ -0,0 +1,34 @@
+import strawberry
+from fastapi import FastAPI
+from strawberry.fastapi import GraphQLRouter
+
+
+def get_lines():
+    # example line
+    return [Line(name="line", axis="x", start=0.2, stop=0.3, num=4)]
+
+
+@strawberry.input
+class Line:
+    name: str
+    axis: str = strawberry.field(description="An identifier for what to move")
+    start: float = strawberry.field(
+        description="Midpoint of the first point of the line"
+    )
+    stop: float = strawberry.field(description="Midpoint of the last point of the line")
+    num: int = strawberry.field(description="Number of frames to produce")
+
+
+@strawberry.type
+class Query:
+    @strawberry.field
+    def validate(self, spec: Line) -> str:
+        return "accepted"
+
+
+schema = strawberry.Schema(Query)
+
+graphql_app = GraphQLRouter(schema, path="/", graphql_ide="apollo-sandbox")
+
+app = FastAPI()
+app.include_router(graphql_app, prefix="/graphql")