Service transparency and usability: expected data keys, supported representations, unit tests

.github/workflows/pythonpackage.yml

@@ -38,6 +38,9 @@ jobs:
       run: |
         pip install pytest
         PISA_FTYPE=fp32 PISA_TARGET=cpu MPLBACKEND=agg ./pisa_tests/test_example_pipelines.py -v
+    - name: Test PISA services, double precision
+      run: |
+        PISA_FTYPE=fp64 PISA_TARGET=cpu PISA_RESOURCES=./pisa_examples/resources MPLBACKEND=agg ./pisa_tests/test_services.py -v
     - name: Test PISA imports and unit tests, double precision
       run: |
         pip install pytest

pisa/core/bin_indexing.py

@@ -132,7 +132,7 @@ def lookup_indices(sample, binning):
     if len(sample) != binning.num_dims:
         raise ValueError(
             f"`binning` has {binning.num_dims} dimension(s), but `sample`"
-            f"contains {len(sample)} arrays (so represents {len(sample)}"
+            f" contains {len(sample)} arrays (so represents {len(sample)}"
             f" dimensions)"
         )