Add some tests for the 4-5 int/float form in interact()

IPython/html/widgets/tests/test_interaction.py

@@ -220,6 +220,84 b' def test_list_tuple_3_float():'
         )
         check_widgets(c, tup=d, lis=d)
 
+def test_list_tuple_4_int():
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(4, 3, 2, 1))
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(1, 2, 3, 2))
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(2, 1, 3, 4))
+    for min, low, high, max in [(0, 1, 2, 3), (0, 0, 0, 0), (1, 2, 2, 3), (-2, -1, 1, 2)]:
+        c = interactive(f, tup=(min, low, high, max), lis=[min, low, high, max])
+        nt.assert_equal(len(c.children), 2)
+        d = dict(
+            cls=widgets.IntRangeSliderWidget,
+            min=min,
+            max=max,
+            value=(low, high),
+            range=True,
+            readout=True
+        )
+        check_widgets(c, tup=d, lis=d)
+
+def test_list_tuple_5_int():
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(1, 2, 3, 4, 0))
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(1, 2, 3, 4, -1))
+    for min, low, high, max, step in [(0, 1, 2, 3, 1), (0, 0, 0, 0, 1), (1, 2, 2, 3, 2), (-2, -1, 1, 2, 3)]:
+        c = interactive(f, tup=(min, low, high, max, step), lis=[min, low, high, max, step])
+        nt.assert_equal(len(c.children), 2)
+        d = dict(
+            cls=widgets.IntRangeSliderWidget,
+            min=min,
+            max=max,
+            value=(low, high),
+            step=step,
+            range=True,
+            readout=True
+        )
+        check_widgets(c, tup=d, lis=d)
+        
+def test_list_tuple_4_float():
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(4, 3., 2, 1))
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(1, 2, 3, 2.))
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(2, 1., 3, 4))
+    for min, low, high, max in [(0, 1., 2, 3), (0, 0, 0., 0), (1., 2., 2., 3.1415), (-2.5, -1, 1, 2.5)]:
+        c = interactive(f, tup=(min, low, high, max), lis=[min, low, high, max])
+        nt.assert_equal(len(c.children), 2)
+        d = dict(
+            cls=widgets.FloatRangeSliderWidget,
+            min=min,
+            max=max,
+            value=(low, high),
+            range=True,
+            readout=True
+        )
+        check_widgets(c, tup=d, lis=d)
+
+def test_list_tuple_5_float():
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(1, 2., 3., 4, 0))
+    with nt.assert_raises(ValueError):
+        c = interactive(f, tup=(1, 2, 3., 4., -0.5))
+    for min, low, high, max, step in [(0, 1, 2, 3, 0.01), (0, 0, 0, 0, 0.1), (1, 2, 2, 3, 2.718), (-2, -1.5, 1.5, 2, 2)]:
+        c = interactive(f, tup=(min, low, high, max, step), lis=[min, low, high, max, step])
+        nt.assert_equal(len(c.children), 2)
+        d = dict(
+            cls=widgets.FloatRangeSliderWidget,
+            min=min,
+            max=max,
+            value=(low, high),
+            step=step,
+            range=True,
+            readout=True
+        )
+        check_widgets(c, tup=d, lis=d)
+
 def test_list_tuple_str():
     values = ['hello', 'there', 'guy']
     first = values[0]