Refactor tests and increase coverage (#87)

* refactor and complete brier tests

* refactor and complete crps tests

* refactor and complete energy tests

* refactor and complete ess tests

* fix failing crps hg test

* exclude ImportError from coverage

* 100% coverage for crps

* refactor and complete kernels tests

* refactor and complete the rest

* exclude backends and typing module from coverage

Author: frazane

pyproject.toml

@@ -64,7 +64,12 @@ line-length = 88
 ignore = ["E741"]
 
 [tool.coverage.run]
-omit = ["**/_gufuncs.py", "**/_gufunc.py"]
+omit = [
+    "**/_gufuncs.py", # numba gufuncs are not python code
+    "**/_gufunc.py",
+    "scoringrules/backend/*.py", # superfluous
+    "scoringrules/core/typing.py" # only type hints
+]
 
 [tool.coverage.report]
-exclude_also = ["if tp.TYPE_CHECKING:"]
+exclude_also = ["if tp.TYPE_CHECKING:", "except ImportError"]

scoringrules/_crps.py

@@ -1789,19 +1789,22 @@ def crps_2pnormal(
     >>> sr.crps_2pnormal(0.0, 0.4, 2.0, 0.1)
     """
     B = backends.active if backend is None else backends[backend]
+    obs, scale1, scale2, location = map(
+        B.asarray, (observation, scale1, scale2, location)
+    )
     lower = float("-inf")
     upper = 0.0
     lmass = 0.0
     umass = scale2 / (scale1 + scale2)
-    z = B.minimum(B.asarray(0.0), B.asarray(observation - location)) / scale1
+    z = B.minimum(B.asarray(0.0), B.asarray(obs - location)) / scale1
     s1 = scale1 * crps.gtcnormal(
         z, 0.0, 1.0, lower, upper, lmass, umass, backend=backend
     )
     lower = 0.0
     upper = float("inf")
     lmass = scale1 / (scale1 + scale2)
     umass = 0.0
-    z = B.maximum(B.asarray(0.0), B.asarray(observation - location)) / scale2
+    z = B.maximum(B.asarray(0.0), B.asarray(obs - location)) / scale2
     s2 = scale2 * crps.gtcnormal(
         z, 0.0, 1.0, lower, upper, lmass, umass, backend=backend
     )