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Add more math functions to templates (#13915)

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We make `sin`, `cos`, `tan`, and `sqrt` functions, and the `pi`, `tau`,
and `e` constants available in templates.
This commit is contained in:
Benedict Aas
2018-04-15 17:51:45 +01:00
committed by Fabian Affolter
parent c69f37500a
commit 9677bc081e
2 changed files with 111 additions and 0 deletions
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68
tests/helpers/test_template.py
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@@ -149,6 +149,74 @@ class TestHelpersTemplate(unittest.TestCase):
'{{ log(%s, %s) | round(1) }}' % (value, base),
self.hass).render())
def test_sine(self):
"""Test sine."""
tests = [
(0, '0.0'),
(math.pi / 2, '1.0'),
(math.pi, '0.0'),
(math.pi * 1.5, '-1.0'),
(math.pi / 10, '0.309')
]
for value, expected in tests:
self.assertEqual(
expected,
template.Template(
'{{ %s | sin | round(3) }}' % value,
self.hass).render())
def test_cos(self):
"""Test cosine."""
tests = [
(0, '1.0'),
(math.pi / 2, '0.0'),
(math.pi, '-1.0'),
(math.pi * 1.5, '-0.0'),
(math.pi / 10, '0.951')
]
for value, expected in tests:
self.assertEqual(
expected,
template.Template(
'{{ %s | cos | round(3) }}' % value,
self.hass).render())
def test_tan(self):
"""Test tangent."""
tests = [
(0, '0.0'),
(math.pi, '-0.0'),
(math.pi / 180 * 45, '1.0'),
(math.pi / 180 * 90, '1.633123935319537e+16'),
(math.pi / 180 * 135, '-1.0')
]
for value, expected in tests:
self.assertEqual(
expected,
template.Template(
'{{ %s | tan | round(3) }}' % value,
self.hass).render())
def test_sqrt(self):
"""Test square root."""
tests = [
(0, '0.0'),
(1, '1.0'),
(2, '1.414'),
(10, '3.162'),
(100, '10.0'),
]
for value, expected in tests:
self.assertEqual(
expected,
template.Template(
'{{ %s | sqrt | round(3) }}' % value,
self.hass).render())
def test_strptime(self):
"""Test the parse timestamp method."""
tests = [