Add tests/test_utils_get_adj.py

tests/test_utils_get_adj.py

@@ -0,0 +1,37 @@
+import pytest
+import sys
+import os
+from slic.core.adjustable import Adjustable
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+from slic.utils.get_adj import *
+
+@pytest.fixture
+def real_adjustables():
+    a1 = Adjustable("brightness",       units="%", limit_low=0,   limit_high=100)
+    a2 = Adjustable("contrast",         units="%", limit_low=0,   limit_high=100)
+    a3 = Adjustable("debug_internal",   internal=True)
+    return a1, a2, a3
+
+
+def test_get_adj_success(real_adjustables):
+    a1, _, _ = real_adjustables
+    assert get_adj("brightness") is a1
+
+
+def test_get_adj_not_found(capfd):
+    with pytest.raises(ValueError, match='could not find Adjustable with name "nonexistent"') as exc_info:
+        get_adj("nonexistent")
+
+
+def test_ensure_adjs_mixed(real_adjustables):
+    a1, a2, a3 = real_adjustables
+    result = ensure_adjs(["contrast", a1, "debug_internal"])
+    assert result == (a2, a1, a3)
+
+
+def test_get_adjs_filter(real_adjustables):
+    a1, a2, a3 = real_adjustables
+    public = get_adjs()
+    assert public == {"brightness": a1, "contrast": a2}
+    all_ = get_adjs(include_internal=True)
+    assert all_ == {"brightness": a1, "contrast": a2, "debug_internal": a3}