#150: Add pytest-cov to the repo

- nox -s tests -- --cov is a good starting point for usage - I'm not sure how much I trust the output - there's around half coverage for both DB & ICAT backend's helper files, even though I've currently got the ICAT backend configured...
ral-facilities · Nov 10, 2020 · 257082e · 257082e
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diff --git a/.gitignore b/.gitignore
@@ -6,3 +6,4 @@ config.json
 .vscode/
 .nox/
 .python-version
+.coverage
diff --git a/poetry.lock b/poetry.lock
diff --git a/pyproject.toml b/pyproject.toml
@@ -37,10 +37,22 @@ flake8-comprehensions = "^3.3.0"
 flake8-logging-format = "^0.6.0"
 pep8-naming = "^0.11.1"
 pytest = "^6.1.2"
+coverage = {extras = ["toml"], version = "^5.3"}
+pytest-cov = "^2.10.1"
 
 [tool.poetry.scripts]
 datagateway-api = "datagateway_api.src.main:run_api"
 
 [build-system]
 requires = ["poetry-core>=1.0.0"]
 build-backend = "poetry.core.masonry.api"
+
+[tool.coverage.paths]
+source = ["datagateway_api"]
+
+[tool.coverage.run]
+branch = true
+source = ["datagateway_api"]
+
+[tool.coverage.report]
+show_missing = true