Add basic continuous integration for PyROQ

.github/workflows/test.yml

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+# -----------------------
+#
+# Run a full build-and-test from the git repo
+# using a combination of conda and pip to install
+# all optional dependencies.
+#
+# This is the 'full' test suite.
+#
+# -----------------------
+
+name: Build and test
+
+on:
+  push:
+    branches:
+      - main
+      - master
+  pull_request:
+    branches:
+      - main
+      - master
+
+jobs:
+  build-and-test:
+    name: Python ${{ matrix.python-version }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version:
+          - 3.7
+          - 3.8
+          - 3.9
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Get source code
+      uses: actions/checkout@v2
+      with:
+        fetch-depth: 0
+
+    - name: Set up Python
+      uses: actions/setup-python@v2
+      with:
+        python-version: '${{ matrix.python-version }}'
+
+    - name: Install the software
+      run: python -m pip install Code/
+
+    - name: Package list
+      run: python -m pip list installed
+
+    - name: Run test suite
+      run: python -m pytest -ra --color yes --cov PyROQ --pyargs PyROQ --cov-report=xml --junitxml=pytest.xml
+
+    - name: Coverage report
+      run: python -m coverage report --show-missing
+
+    - name: Publish coverage to Codecov
+      uses: codecov/codecov-action@v1.2.1
+      with:
+        files: coverage.xml
+        flags: ${{ runner.os }},python${{ matrix.python-version }}

Code/PyROQ/tests/__init__.py

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+# -*- coding: utf-8 -*-
+# Copyright (C) 2021 Cardiff University
+
+"""Test suite for PyROQ
+"""
+
+__author__ = "Duncan Macleod <macleoddm@cardiff.ac.uk>"

Code/PyROQ/tests/test_pyroq.py

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+# -*- coding: utf-8 -*-
+# Copyright (C) 2021 Cardiff University
+
+"""Test suite for `PyROQ.pyroq` module
+"""
+
+__author__ = "Duncan Macleod <macleoddm@cardiff.ac.uk>"
+
+import numpy
+import numpy.testing
+
+import pytest
+
+from .. import pyroq
+
+
+@pytest.mark.parametrize(("a", "b", "result"), (
+    (numpy.array((1, 0, 0)),  # a
+     numpy.array((0, 1, 0)),  # b
+     numpy.array((0, 0, 0)),  # result
+     ),
+    (numpy.array((1, 1, 0)),
+     numpy.array((0, 1, 0)),
+     numpy.array((0.5, 0.5, 0)),
+     ),
+))
+def test_proj(a, b, result):
+    """Test `PyROQ.pyroq.proj` function over a few different cases
+    """
+    numpy.testing.assert_array_equal(
+        pyroq.proj(a, b),
+        result,
+    )