add new point examples of date ranges

tests/test_slice_date_range_fdb_v2.py

@@ -0,0 +1,45 @@
+import pandas as pd
+import pytest
+
+from polytope.datacube.backends.fdb import FDBDatacube
+from polytope.engine.hullslicer import HullSlicer
+from polytope.polytope import Polytope, Request
+from polytope.shapes import Select, Span
+
+
+class TestSlicingFDBDatacube:
+    def setup_method(self, method):
+        # Create a dataarray with 3 labelled axes using different index types
+        self.options = {
+            "values": {
+                "transformation": {"mapper": {"type": "regular", "resolution": 30, "axes": ["latitude", "longitude"]}}
+            },
+            "date": {"transformation": {"merge": {"with": "time", "linkers": ["T", "00"]}}},
+            "step": {"transformation": {"type_change": "int"}},
+        }
+        self.config = {"class": "ea", "expver": "0001", "levtype": "pl", "step": 0}
+        self.fdbdatacube = FDBDatacube(self.config, axis_options=self.options)
+        self.slicer = HullSlicer()
+        self.API = Polytope(datacube=self.fdbdatacube, engine=self.slicer, axis_options=self.options)
+
+    # Testing different shapes
+    @pytest.mark.skip(reason="can't install fdb branch on CI")
+    def test_fdb_datacube(self):
+        request = Request(
+            Select("step", [0]),
+            Select("levtype", ["pl"]),
+            Span("date", pd.Timestamp("20170101T120000"), pd.Timestamp("20170102T120000")),
+            Select("domain", ["g"]),
+            Select("expver", ["0001"]),
+            Select("param", ["129"]),
+            Select("class", ["ea"]),
+            Select("stream", ["enda"]),
+            Select("type", ["an"]),
+            Select("latitude", [0]),
+            Select("longitude", [0]),
+            Select("levelist", ["500", "850"]),
+            Select("number", ["0"]),
+        )
+        result = self.API.retrieve(request)
+        result.pprint()
+        assert len(result.leaves) == 6