tests: add some unit tests for UpdateSeq

tests/putil/test_updateseq.py

@@ -0,0 +1,105 @@
+from panda3d.core import UpdateSeq
+
+
+def test_updateseq_initial():
+    seq = UpdateSeq()
+    assert seq == UpdateSeq.initial()
+
+    assert seq.is_special()
+    assert seq.is_initial()
+    assert not seq.is_old()
+    assert not seq.is_fresh()
+
+    assert seq.seq == 0
+
+    initial = UpdateSeq.initial()
+    assert seq == initial
+    assert seq >= initial
+    assert seq <= initial
+    assert not (seq != initial)
+    assert not (seq > initial)
+    assert not (seq < initial)
+
+    fresh = UpdateSeq.fresh()
+    assert not (seq == fresh)
+    assert not (seq >= fresh)
+    assert seq <= fresh
+    assert seq != fresh
+    assert not (seq > fresh)
+    assert seq < fresh
+
+    old = UpdateSeq.old()
+    assert not (seq == old)
+    assert not (seq >= old)
+    assert not (seq > old)
+    assert seq != old
+    assert seq <= old
+    assert seq < old
+
+
+def test_updateseq_fresh():
+    seq = UpdateSeq.fresh()
+
+    assert seq.is_special()
+    assert not seq.is_initial()
+    assert not seq.is_old()
+    assert seq.is_fresh()
+
+    initial = UpdateSeq.initial()
+    assert not (seq == initial)
+    assert seq != initial
+    assert seq > initial
+    assert seq >= initial
+    assert not (seq < initial)
+    assert not (seq <= initial)
+
+    fresh = UpdateSeq.fresh()
+    assert seq == fresh
+    assert seq >= fresh
+    assert seq <= fresh
+    assert not (seq != fresh)
+    assert not (seq > fresh)
+    assert not (seq < fresh)
+
+    old = UpdateSeq.old()
+    assert not (seq == old)
+    assert not (seq >= old)
+    assert not (seq > old)
+    assert seq != old
+    assert seq <= old
+    assert seq < old
+
+
+def test_updateseq_old():
+    seq = UpdateSeq.old()
+
+    assert seq.is_special()
+    assert not seq.is_initial()
+    assert seq.is_old()
+    assert not seq.is_fresh()
+
+    assert seq.seq == 1
+
+    initial = UpdateSeq.initial()
+    assert not (seq == initial)
+    assert not (seq <= initial)
+    assert not (seq < initial)
+    assert seq != initial
+    assert seq > initial
+    assert seq >= initial
+
+    fresh = UpdateSeq.fresh()
+    assert not (seq == fresh)
+    assert not (seq >= fresh)
+    assert not (seq > fresh)
+    assert seq <= fresh
+    assert seq != fresh
+    assert seq < fresh
+
+    old = UpdateSeq.old()
+    assert seq == old
+    assert seq >= old
+    assert seq <= old
+    assert not (seq != old)
+    assert not (seq > old)
+    assert not (seq < old)