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add support for negative indices in Slice(), with tests

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This commit is contained in:
Martin Angers
2012-10-10 19:55:34 -04:00
parent 9ed3dce6b0
commit cbddb7a808
3 changed files with 33 additions and 3 deletions
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25
array_test.go
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@@ -70,6 +70,31 @@ func TestSliceOutOfBounds(t *testing.T) {
Doc().Root.Find(".pvk-content").Slice(2, 12)
}
func TestNegativeSliceStart(t *testing.T) {
sel := Doc().Root.Find(".container-fluid").Slice(-2, 3)
AssertLength(t, sel.Nodes, 1)
AssertSelectionIs(t, sel.Eq(0), "#cf3")
}
func TestNegativeSliceEnd(t *testing.T) {
sel := Doc().Root.Find(".container-fluid").Slice(1, -1)
AssertLength(t, sel.Nodes, 2)
AssertSelectionIs(t, sel.Eq(0), "#cf2")
AssertSelectionIs(t, sel.Eq(1), "#cf3")
}
func TestNegativeSliceBoth(t *testing.T) {
sel := Doc().Root.Find(".container-fluid").Slice(-3, -1)
AssertLength(t, sel.Nodes, 2)
AssertSelectionIs(t, sel.Eq(0), "#cf2")
AssertSelectionIs(t, sel.Eq(1), "#cf3")
}
func TestNegativeSliceOutOfBounds(t *testing.T) {
defer AssertPanic(t)
Doc().Root.Find(".container-fluid").Slice(-12, -7)
}
func TestSliceRollback(t *testing.T) {
sel := Doc().Root.Find(".pvk-content")
sel2 := sel.Slice(0, 2).End()