In #5307, where I am lowering our testing tolerance down to zero, I am discovering a few recent changes that slipped through because the tolerance on our tests was too high.

The test broke somewhere in ebb2e63, ef683df or c326744 (not all of those commits are buildable).

BASELINE IMAGE:

CURRENT RESULT:

Test code:

    fig = plt.figure()

    # make sure runits and theta units work
    y1 = [y*km for y in y1]
    plt.polar(x2, y1, color="blue", thetaunits="rad", runits="km")
    assert_true(isinstance(plt.gca().get_xaxis().get_major_formatter(), units.UnitDblFormatter))

Cc: @cimarronm as the author of the bisect commits