fix: add test dependencies to test runner + add test dependencies option to pyproject.toml

Author: lachlangrose

.github/workflows/tester.yml

@@ -37,7 +37,7 @@ jobs:
       - name: Building and install
         shell: bash -l {0}
         run: |
-          pip install . --user
+          pip install .[tests] --user
       - name: pytest
         shell: bash -l {0}
         run: |

pyproject.toml

@@ -46,6 +46,7 @@ visualisation = ["matplotlib", "pyvista", "loopstructuralvisualisation>=0.1.14"]
 export = ["geoh5py", "pyevtk", "dill"]
 jupyter = ["pyvista[all]"]
 inequalities = ["loopsolver"]
+tests = ['pytest','all']
 docs = [
     "pyvista[all]",
     "pydata-sphinx-theme",