add dora-joy node publishing gamepad axes and buttons

tests/test_probe.py

@@ -0,0 +1,54 @@
+"""The probe: what it draws, without a pad or a terminal."""
+
+from dora_joy.gamepad import Sample
+from dora_joy.probe import bar, render
+from tests.conftest import stick
+
+
+def test_a_centred_stick_puts_the_marker_in_the_middle():
+    drawn = bar(0.0)
+
+    assert drawn[len(drawn) // 2] == "#"
+
+
+def test_the_bar_leans_the_way_the_stick_is_pushed():
+    left = bar(-1.0)
+    right = bar(1.0)
+
+    assert left.index("#") < left.index("|")
+    assert right.index("#") > right.index("|")
+
+
+def test_a_reading_beyond_full_deflection_stays_on_the_bar():
+    # SDL has been known to report slightly outside -1..1 on a worn stick.
+    assert "#" in bar(-4.0)
+    assert "#" in bar(4.0)
+
+
+def test_no_gamepad_says_so_and_names_the_index_it_looked_for(config):
+    config.joystick_index = 2
+
+    drawn = render(Sample(present=False), config)
+
+    assert "no gamepad found" in drawn
+    assert "index 2" in drawn
+
+
+def test_every_axis_the_pad_reports_is_shown(config):
+    # A pad whose sticks land on unexpected indices is what this is for, so
+    # nothing may be hidden.
+    drawn = render(Sample(axes=[0.0] * 8, buttons=[], present=True), config)
+
+    assert "axes (8 reported)" in drawn
+    for index in range(8):
+        assert f"    {index}  " in drawn
+
+
+def test_the_buttons_being_held_are_listed_by_index(config):
+    drawn = render(stick(buttons=[False, True, False, True]), config)
+
+    assert "1, 3" in drawn
+
+
+def test_a_pad_with_nothing_pressed_says_so(config):
+    assert "none pressed" in render(stick(), config)