import pysuperconductor.os_gap_calc
import numpy
import pytest


def test_gap_integrand_function():
	actual = pysuperconductor.os_gap_calc.gap_integrand_function(10, 1, 5, 2)
	numpy.testing.assert_almost_equal(
		actual, 0.04471214382962651,
		decimal=7, err_msg='gap integrand function is off', verbose=True
	)


def test_gap_integrand_function_zero_temp():
	actual = None
	with pytest.warns(None) as record:
		actual = pysuperconductor.os_gap_calc.gap_integrand_function(10, 0, 5, 2)
	numpy.testing.assert_almost_equal(
		actual, 0.0447213595499958,
		decimal=7, err_msg='gap integrand function fails at zero temp', verbose=True
	)
	assert not record


def test_gap_integral():
	actual = pysuperconductor.os_gap_calc.gap_integral(1, 5, 2, 10)
	numpy.testing.assert_almost_equal(
		actual, 1.390972295468881,
		decimal=7, err_msg='gap integral is off', verbose=True
	)


def test_equilibrium_gap_zero_temp():
	actual = pysuperconductor.os_gap_calc.equilibrium_gap(0, 100, .2)
	numpy.testing.assert_almost_equal(
		actual, 1.3476505830587,
		decimal=7, err_msg='gap finding at zero temp equilibrium is wrong',
		verbose=True
	)


def test_gap():
	actual = pysuperconductor.os_gap_calc.find_gap(.5, .1, 100, .2)
	numpy.testing.assert_almost_equal(
		actual, 1.108996409216592,
		decimal=7, err_msg='had trouble with gap at non-zero temp and mustar',
		verbose=True
	)


def test_n_integrand_function():
	actual = pysuperconductor.os_gap_calc.n_integrand_function(1, 2, 2, 1)
	numpy.testing.assert_almost_equal(
		actual, 0.1038525814172795,
		decimal=7, err_msg='did not find correct n integrand value',
		verbose=True
	)


def test_n_integral():
	actual = None
	with pytest.warns(None) as record:
		actual = pysuperconductor.os_gap_calc.n_integral(2, 2, 1)
	numpy.testing.assert_almost_equal(
		actual, 0.478130649727604,
		decimal=7, err_msg='did not find correct n integral value',
		verbose=True
	)
	assert not record


def test_find_n_gap():
	actual = None
	with pytest.warns(None) as record:
		actual = pysuperconductor.os_gap_calc.find_gap_for_n(.3, .1, 100, .2)
	numpy.testing.assert_almost_equal(
		actual[0], 1.0296692197710933,
		decimal=7, err_msg="did not find correct delta",
		verbose=True
	)
	assert not record