Add tests for build_child_callback

tests/rest/datacube/test_base_datacube.py

@@ -0,0 +1,56 @@
+from openeo.internal.graph_building import PGNode
+from openeo.rest._datacube import build_child_callback, UDF
+
+
+def test_build_child_callback_str():
+    pg = build_child_callback("add", parent_parameters=["x", "y"])
+    assert isinstance(pg["process_graph"], PGNode)
+    assert pg["process_graph"].flat_graph() == {
+        "add1": {
+            "process_id": "add",
+            "arguments": {"x": {"from_parameter": "x"}, "y": {"from_parameter": "y"}},
+            "result": True,
+        }
+    }
+
+
+def test_build_child_callback_pgnode():
+    pg = build_child_callback(
+        PGNode(process_id="add", arguments={"x": {"from_parameter": "x"}, "y": 1}), parent_parameters=["x"]
+    )
+    assert isinstance(pg["process_graph"], PGNode)
+    assert pg["process_graph"].flat_graph() == {
+        "add1": {
+            "process_id": "add",
+            "arguments": {"x": {"from_parameter": "x"}, "y": 1},
+            "result": True,
+        }
+    }
+
+
+def test_build_child_callback_lambda():
+    pg = build_child_callback(lambda x: x + 1, parent_parameters=["x"])
+    assert isinstance(pg["process_graph"], PGNode)
+    assert pg["process_graph"].flat_graph() == {
+        "add1": {
+            "process_id": "add",
+            "arguments": {"x": {"from_parameter": "x"}, "y": 1},
+            "result": True,
+        }
+    }
+
+
+def test_build_child_callback_udf():
+    pg = build_child_callback(UDF(code="def fun(x):\n    return x + 1", runtime="Python"), parent_parameters=["data"])
+    assert isinstance(pg["process_graph"], PGNode)
+    assert pg["process_graph"].flat_graph() == {
+        "runudf1": {
+            "process_id": "run_udf",
+            "arguments": {
+                "data": {"from_parameter": "data"},
+                "runtime": "Python",
+                "udf": "def fun(x):\n    return x + 1",
+            },
+            "result": True,
+        }
+    }