def test_plot_default_labels():
b = Beam(10, [PointLoad(10, 10)], [FixedReaction(0)])
fig, axes = b.plot()
x_labels = ("", "", "Beam position, x")
y_labels = ("shear", "moment", "deflection")
assert len(axes) == len(x_labels), "wrong number of sub-plots"
for ax, x_label, y_label in zip(axes, x_labels, y_labels):
assert ax.get_xlabel() == x_label
assert ax.get_ylabel() == y_label
def test_plot_custom_labels():
b = Beam(10, [PointLoad(10, 10)], [FixedReaction(0)])
diagrams = ("deflection", "deflection", "moment", "shear")
labels = ("def1", "def2", "M", "V")
fig, axes = b.plot(diagrams=diagrams, diagram_labels=labels)
assert len(axes) == len(diagrams), "wrong number of sub-plots"
x_labels = ["" for _ in range(len(diagrams) - 1)]
x_labels.append("Beam position, x")
for ax, x_label, y_label in zip(axes, x_labels, labels):
assert ax.get_xlabel() == x_label
assert ax.get_ylabel() == y_label
def test_plot_one_diagram():
b = Beam(10, [PointLoad(10, 10)], [FixedReaction(0)])
fig, axes = b.plot(diagrams=("deflection", ))
assert len(axes) == 1, "expected length of axes was 1"
for ax, y_label in zip(axes, ("deflection", )):
assert ax.get_ylabel() == y_label
def test_plot_diagram_labels_without_diagrams():
with pytest.raises(ValueError):
b = Beam(10, [PointLoad(10, 10)], [FixedReaction(0)])
b.plot(diagram_labels=("V, lb", "M, in/lb", "delta, in"))
def test_plot_diagrams_diagrams_label_mismatch():
with pytest.raises(ValueError):
b = Beam(10, [PointLoad(10, 10)], [FixedReaction(0)])
b.plot(diagrams=("shear", ), diagram_labels=("shear", "moment"))
def test_plot_diagrams_invalid_value():
with pytest.raises(ValueError):
b = Beam(10, [PointLoad(10, 10)], [FixedReaction(0)])
b.plot(diagrams=("shear", "bad value"))