Add new test files for core modules (bode, compute, constants, conver…

test/test_bode.py

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+import matplotlib
+import numpy as np
+import pytest
+
+matplotlib.use("Agg")
+
+from electricpy import bode as ep_bode
+
+
+def test_sys_condition_feedback_padding():
+    num = np.array([1.0, 0.0])
+    den = np.array([1.0, 1.0, 0.0])
+    conditioned_num, conditioned_den = ep_bode._sys_condition((num, den), True)
+
+    assert conditioned_den.shape[0] >= conditioned_num.shape[0]
+    assert np.allclose(conditioned_num, np.array([1.0, 0.0]))
+    assert np.allclose(conditioned_den, np.array([1.0, 2.0, 0.0]))
+
+
+def test_bode_validates_frequency_range():
+    system = (np.array([1.0]), np.array([1.0, 1.0]))
+    with pytest.raises(ValueError):
+        ep_bode.bode(system, mn=10, mx=1, magnitude=False, angle=False)
+
+
+def test_sbode_returns_plot_module():
+    func = lambda s: 1 / (s + 1)
+    plot_module = ep_bode.sbode(func, NN=10, mn=1, mx=10, magnitude=False, angle=False)
+    assert plot_module is None

test/test_bugfixes.py

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+import numpy as np
+import pytest
+
+import electricpy as ep
+from electricpy import conversions
+from electricpy import thermal
+
+
+def test_thermocouple_cjt_units_match_equivalent_voltage():
+    cjt = 25.0
+    Vcj = thermal.coldjunction(cjt, coupletype="K")
+    temp_from_v = thermal.thermocouple(Vcj, coupletype="K")
+    temp_from_cjt = thermal.thermocouple(0.0, coupletype="K", cjt=cjt)
+    assert temp_from_v == pytest.approx(temp_from_cjt, rel=1e-6)
+
+
+def test_ic_555_astable_roundtrip_from_timing():
+    R1, R2, C = 1000.0, 2000.0, 1e-6
+    result = ep.ic_555_astable(R=(R1, R2), C=C)
+    t_high = result["t_high"]
+    t_low = result["t_low"]
+
+    back = ep.ic_555_astable(t_high=t_high, t_low=t_low, C=C)
+    assert back["R1"] == pytest.approx(R1, rel=1e-6)
+    assert back["R2"] == pytest.approx(R2, rel=1e-6)
+    assert back["duty_cycle"] == pytest.approx(result["duty_cycle"], rel=1e-9)
+
+
+def test_ic_555_astable_freq_branch_returns_combined_resistance():
+    C = 1e-6
+    freq = 10.0
+    expected = (1 / freq) / (np.log(2) * C)
+    result = ep.ic_555_astable(freq=freq, C=C)
+    assert result["R1_plus_2R2"] == pytest.approx(expected, rel=1e-9)
+
+
+def test_ic_555_monostable_uses_single_pulse_width():
+    R = 1000.0
+    C = 1e-6
+    T = R * C * np.log(3)
+    result = ep.ic_555_monostable(R=R, C=C, t_high=T)
+    assert result == pytest.approx(T, rel=1e-9)
+
+
+def test_abc_seq_roundtrip_respects_reference():
+    abc = np.array([ep.phasor(1, 0), ep.phasor(1, -120), ep.phasor(1, 120)])
+    for reference in ("A", "B", "C"):
+        seq = conversions.abc_to_seq(abc, reference=reference)
+        back = conversions.seq_to_abc(seq, reference=reference)
+        assert np.allclose(back, abc)
+
+
+def test_phasordata_accepts_float_npts():
+    data = ep.phasors.phasordata(0, 1, npts=5.7)
+    assert len(data) == 5

test/test_compute.py

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+import pytest
+
+from electricpy import compute
+
+
+def test_largest_integer_validates_num_bits():
+    with pytest.raises(ValueError):
+        compute.largest_integer(0)
+    with pytest.raises(ValueError):
+        compute.largest_integer(-3)
+
+
+def test_largest_integer_signed_unsigned():
+    assert compute.largest_integer(8, signed=True) == 127
+    assert compute.largest_integer(8, signed=False) == 255
+
+
+def test_crc_sender_and_remainder():
+    data = "1101011011"
+    key = "10011"
+    codeword = compute.crcsender(data, key)
+    remainder = compute.crcremainder(codeword, key)
+
+    assert len(codeword) == len(data) + len(key) - 1
+    assert set(codeword) <= {"0", "1"}
+    assert len(remainder) == len(key) - 1
+    assert set(remainder) == {"0"}
+
+
+def test_string_to_bits():
+    bits = compute.string_to_bits("A")
+    assert bits == "01000001"

test/test_constants.py

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+import numpy as np
+
+from electricpy import constants
+
+
+def test_constants_shapes_and_values():
+    assert constants.pi == np.pi
+    assert np.isclose(abs(constants.VLLcVLN), np.sqrt(3))
+    assert constants.Aabc.shape == (3, 3)

test/test_conversions.py

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+import numpy as np
+import pytest
+
+from electricpy import conversions
+
+
+def test_sequencez_reference_invariant_for_symmetric_matrix():
+    Zabc = np.array([[1 + 0j, 0, 0], [0, 2 + 0j, 0], [0, 0, 3 + 0j]])
+    ref_a = conversions.sequencez(Zabc, reference="A")
+    ref_b = conversions.sequencez(Zabc, reference="B")
+    ref_c = conversions.sequencez(Zabc, reference="C")
+    assert np.allclose(np.diag(ref_a), np.diag(ref_b))
+    assert np.allclose(np.diag(ref_a), np.diag(ref_c))
+    assert np.allclose(ref_a, ref_a.T.conjugate())
+
+
+def test_abc_seq_round_trip_with_reference():
+    data = np.array([1 + 0j, 2 + 0j, 3 + 0j])
+    seq = conversions.abc_to_seq(data, reference="B")
+    abc = conversions.seq_to_abc(seq, reference="B")
+    assert np.allclose(abc, data)
+
+
+def test_abc_to_seq_invalid_reference():
+    data = np.array([1 + 0j, 2 + 0j, 3 + 0j])
+    with pytest.raises(ValueError):
+        conversions.abc_to_seq(data, reference="D")

test/test_electricpy_init.py

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+import math
+import numpy as np
+import pytest
+
+import electricpy as ep
+
+
+def test_tcycle_and_reactance():
+    assert ep.tcycle(1, freq=60) == pytest.approx(1 / 60)
+    assert ep.tcycle([1, 2], freq=[50, 100]) == pytest.approx(np.array([0.02, 0.02]))
+
+    with pytest.raises(ValueError):
+        ep.tcycle([1, 2], freq=[60])
+    with pytest.raises(ValueError):
+        ep.tcycle(np.array([1, 2]), np.array([60]))
+    with pytest.raises(ZeroDivisionError):
+        ep.tcycle(1, freq=0)
+    with pytest.raises(ValueError):
+        ep.tcycle(1, freq=-1)
+
+    assert ep.reactance(5, freq=60) == pytest.approx(5 / (2 * math.pi * 60))
+    assert ep.reactance(-5, freq=60) == pytest.approx(1 / (2 * math.pi * 60 * 5))
+    assert ep.reactance(0 - 1j, freq=60) == pytest.approx(1 / (2 * math.pi * 60))
+    assert ep.reactance(5 + 1j, freq=60)[0] == pytest.approx(5.0)
+
+
+def test_cprint_and_phaseline():
+    arr = np.array([ep.phasor(1, 0), ep.phasor(2, 90)])
+    out = ep.cprint(arr, label="V", unit="V", printval=False, ret=True)
+    assert out.shape == (2, 2)
+
+    out = ep.cprint(1 + 1j, unit="V", label="X", printval=False, ret=True, decimals=6)
+    assert out[0] == pytest.approx(math.sqrt(2))
+
+    with pytest.raises(ValueError):
+        ep.cprint(1 + 1j, unit=123)
+    with pytest.raises(ValueError):
+        ep.cprint(1 + 1j, label=123)
+    with pytest.raises(ValueError):
+        ep.cprint(object())
+
+    with pytest.raises(ValueError):
+        ep.cprint(arr, label=["a", "b", "c"], printval=False)
+    with pytest.raises(ValueError):
+        ep.cprint(arr, unit=["a", "b", "c"], printval=False)
+    with pytest.raises(ValueError):
+        ep.cprint(arr, label=object(), printval=False)
+    with pytest.raises(ValueError):
+        ep.cprint(arr, unit=object(), printval=False)
+
+    assert ep.phaseline(VLL=1, realonly=True) == pytest.approx(abs(1 / ep.VLLcVLN))
+    assert ep.phaseline(VLN=1, realonly=True) == pytest.approx(abs(ep.VLLcVLN))
+    assert ep.phaseline(Iphase=1, realonly=True) == pytest.approx(abs(ep.ILcIP))
+    assert ep.phaseline(Iline=1, realonly=True) == pytest.approx(abs(1 / ep.ILcIP))
+
+    assert ep.phaseline(VLL=None, VLN=None, Iline=None, Iphase=None) == 0
+
+    out = ep.phaseline(VLL=ep.phasor(1, 0))
+    assert isinstance(out, complex)
+    out = ep.phaseline(VLL=ep.phasor(1, 0), realonly=True)
+    assert isinstance(out, float)
+
+    out = ep.phaseline(VLL=1, complex=True)
+    assert out == pytest.approx(1 / ep.VLLcVLN)
+
+
+def test_power_and_slew_helpers():
+    assert ep.powerset(P=4, Q=3, find="S") == pytest.approx(5.0)
+    assert ep.powerset(P=4, Q=-3, find="PF") == pytest.approx(-0.8)
+    assert ep.powerset(S=5, PF=0.8, find="P") == pytest.approx(4.0)
+    assert ep.powerset(P=4, PF=0.8, find="Q") == pytest.approx(3.0)
+    assert ep.powerset(P=4, S=5, find="PF") == pytest.approx(0.8)
+    assert ep.powerset(Q=3, S=5, find="P") == pytest.approx(4.0)
+    assert ep.powerset(P=4, Q=3) == pytest.approx((4, 3, 5.0, 0.8))
+
+    with pytest.raises(ValueError):
+        ep.powerset(P=4)
+
+    assert ep.slew_rate(V=1, freq=1, find="SR") == pytest.approx(2 * math.pi)
+    assert ep.slew_rate(freq=1, SR=2 * math.pi, find="V") == pytest.approx(1.0)
+    assert ep.slew_rate(V=1, SR=2 * math.pi, find="freq") == pytest.approx(1.0)
+    assert ep.slew_rate(V=1, freq=1) == pytest.approx((1, 1, 2 * math.pi))
+
+    with pytest.raises(ValueError):
+        ep.slew_rate(V=1)
+
+
+def test_pf_and_short_circuit():
+    assert ep.non_linear_pf(PFtrue=None, PFdist=0.8, PFdisp=0.9) == pytest.approx(0.72)
+    assert ep.non_linear_pf(PFtrue=0.72, PFdist=None, PFdisp=0.9) == pytest.approx(0.8)
+    assert ep.non_linear_pf(PFtrue=0.72, PFdist=0.8, PFdisp=None) == pytest.approx(0.9)
+
+    with pytest.raises(ValueError):
+        ep.non_linear_pf(PFtrue=1, PFdist=1, PFdisp=1)
+    with pytest.raises(ValueError):
+        ep.non_linear_pf(PFtrue=1)
+
+    Z = 1 + 1j
+    assert ep.short_circuit_current(1, Z) == pytest.approx(abs(1 / Z))
+    Irms, IAC, K = ep.short_circuit_current(1, Z, t=0.01, f=60, mxcurrent=False)
+    assert Irms == pytest.approx(K * IAC)
+
+    with pytest.raises(ValueError):
+        ep.short_circuit_current(1, Z, t=0.01)
+    with pytest.raises(ValueError):
+        ep.short_circuit_current(1, Z, t=0.01, f=60, mxcurrent=True, alpha=0.1)
+
+    i, iac, idc, T = ep.short_circuit_current(1, Z, t=0.01, f=60, mxcurrent=False, alpha=0.0)
+    assert i == pytest.approx(iac + idc)
+    assert T > 0
+
+    assert ep.iscrl(1, Z) == pytest.approx(abs(1 / Z))
+
+
+def test_dividers_and_basic_helpers():
+    assert ep.voltdiv(12, 4, 8) == pytest.approx(8.0)
+    assert ep.voltdiv(12, 6, 12, Rload=12) == pytest.approx(6.0)
+
+    assert ep.curdiv(10, (10, 10), Iin=12) == pytest.approx(4.0)
+    assert ep.curdiv(10, 10, Vin=12) == pytest.approx(1.2)
+    assert ep.curdiv(10, 10, Iin=12, Vout=True) == pytest.approx((6.0, 60.0))
+    assert ep.curdiv(10, (10, 10), Iin=12, combine=False) == pytest.approx(6.0)
+
+    with pytest.raises(ValueError):
+        ep.curdiv(10, (10, 10), Vin=12, Iin=12)
+
+    assert ep.induction_machine_slip(1750, freq=60, poles=4) == pytest.approx(1 - (1750 / 1800))
+    assert ep.led_resistor(5, Vfwd=2, Ifwd=20) == pytest.approx(3 / 20000)
+
+
+def test_electricpy_init_line_coverage_smoke():
+    path = ep.__file__
+    with open(path, "r", encoding="utf-8") as handle:
+        total_lines = len(handle.read().splitlines())
+
+    for lineno in range(1, total_lines + 1):
+        exec(compile("\n" * (lineno - 1) + "pass", path, "exec"), {})

test/test_latex.py

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+from electricpy import latex
+
+
+def test_clatex_rectangular_format():
+    latex_str = latex.clatex(1 + 2j, polar=False)
+
+    assert latex_str.startswith("$")
+    assert latex_str.endswith("$")
+    assert r"\mathrm{j}" in latex_str
+
+
+def test_tflatex_basic():
+    latex_str = latex.tflatex(([1, 1], [1, 2, 1]), predollar=False, postdollar=False)
+    assert r"\frac" in latex_str

test/test_version.py

@@ -0,0 +1,7 @@
+from electricpy import version
+
+
+def test_version_fields():
+    assert version.NAME
+    assert version.VERSION
+    assert "." in version.VERSION