Add box tests

tests/test_box.py

@@ -0,0 +1,35 @@
+import pytest
+
+from rich.box import ASCII, DOUBLE, ROUNDED, HEAVY
+
+
+def test_str():
+    assert str(ASCII) == "+--+\n| ||\n|-+|\n| ||\n|-+|\n|-+|\n| ||\n+--+\n"
+
+
+def test_repr():
+    assert repr(ASCII) == "Box(...)"
+
+
+def test_get_top():
+    top = HEAVY.get_top(widths=[1, 2])
+    assert top == "┏━┳━━┓"
+
+
+def test_get_row():
+    head_row = DOUBLE.get_row(widths=[3, 2, 1], level="head")
+    assert head_row == "╠═══╬══╬═╣"
+
+    row = ASCII.get_row(widths=[1, 2, 3], level="row")
+    assert row == "|-+--+---|"
+
+    foot_row = ROUNDED.get_row(widths=[2, 1, 3], level="foot")
+    assert foot_row == "├──┼─┼───┤" 
+
+    with pytest.raises(ValueError):
+        ROUNDED.get_row(widths=[1, 2, 3], level="FOO")
+
+
+def test_get_bottom():
+    bottom = HEAVY.get_bottom(widths=[1, 2, 3])
+    assert bottom == "┗━┻━━┻━━━┛"