Initialisation du repository de Beta

venv/lib/python3.12/site-packages/sympy/assumptions/tests/test_context.py

@@ -0,0 +1,39 @@
+from sympy.assumptions import ask, Q
+from sympy.assumptions.assume import assuming, global_assumptions
+from sympy.abc import x, y
+
+def test_assuming():
+    with assuming(Q.integer(x)):
+        assert ask(Q.integer(x))
+    assert not ask(Q.integer(x))
+
+def test_assuming_nested():
+    assert not ask(Q.integer(x))
+    assert not ask(Q.integer(y))
+    with assuming(Q.integer(x)):
+        assert ask(Q.integer(x))
+        assert not ask(Q.integer(y))
+        with assuming(Q.integer(y)):
+            assert ask(Q.integer(x))
+            assert ask(Q.integer(y))
+        assert ask(Q.integer(x))
+        assert not ask(Q.integer(y))
+    assert not ask(Q.integer(x))
+    assert not ask(Q.integer(y))
+
+def test_finally():
+    try:
+        with assuming(Q.integer(x)):
+            1/0
+    except ZeroDivisionError:
+        pass
+    assert not ask(Q.integer(x))
+
+def test_remove_safe():
+    global_assumptions.add(Q.integer(x))
+    with assuming():
+        assert ask(Q.integer(x))
+        global_assumptions.remove(Q.integer(x))
+        assert not ask(Q.integer(x))
+    assert ask(Q.integer(x))
+    global_assumptions.clear() # for the benefit of other tests