[skip ci] merge tests from a private fork

Author: ianna

tests/root/test_EulerAngles.py

@@ -0,0 +1,79 @@
+# Copyright (c) 2019-2021, Jonas Eschle, Jim Pivarski, Eduardo Rodrigues, and Henry Schreiner.
+#
+# Distributed under the 3-clause BSD license, see accompanying file LICENSE
+# or https://github.com/scikit-hep/vector for details.
+
+import pytest
+from hypothesis import given, strategies as st
+
+import vector
+
+# If ROOT is not available, skip these tests.
+ROOT = pytest.importorskip("ROOT")
+
+# 4D constructor arguments to get all the weird cases.
+constructor = [
+    (0, 0, 0, 0),
+    (0, 0, 1, 0), # theta == 0.0
+    (0, 0, -1, 0),
+    (0, 0, 1, 0),
+    (0, 0, 0, 4294967296),
+    (0, 4294967296, 0, 0),
+    (0, 0, 0, 10),
+    (0, 0, 0, -10),
+    (1, 2, 3, 0),
+    (1, 2, 3, 10),
+    (1, 2, 3, -10),
+    (1., 2., 3., 2.5),
+    (1, 2, 3, 2.5),
+    (1, 2, 3, -2.5),
+]
+
+# Coordinate conversion methods to apply to the VectorObject4D.
+coordinate_list = [
+    "to_xyzt",
+    "to_xythetat", # may fail for constructor2
+    "to_xyetat",
+    "to_rhophizt",
+    "to_rhophithetat",
+    "to_rhophietat",
+    "to_xyztau",
+    "to_xythetatau",
+    "to_xyetatau",
+    "to_rhophiztau",
+    "to_rhophithetatau",
+    "to_rhophietatau",
+]
+
+@pytest.fixture(scope="module", params=coordinate_list)
+def coordinates(request):
+    return request.param
+
+angle_list = [
+    0,
+    0.0,
+    0.7853981633974483,
+    -0.7853981633974483,
+    1.5707963267948966,
+    -1.5707963267948966,
+    3.141592653589793,
+    -3.141592653589793,
+    6.283185307179586,
+    -6.283185307179586,
+]
+
+@pytest.fixture(scope="module", params=angle_list)
+def angle(request):
+    return request.param
+
+scalar_list = [
+    0,
+    -1,
+    1.0,
+    100000.0000,
+    -100000.0000,
+]
+
+@pytest.fixture(scope="module", params=scalar_list)
+def scalar(request):
+    return request.param