func ExampleNewAllLinesIterator() {
for _, lineIterator := range TicTacToe.NewAllLinesIterator() {
for _, coordinates := range lineIterator {
fmt.Println(coordinates)
}
fmt.Println()
}
// Output:
// {0 0}
// {1 0}
// {2 0}
//
// {0 1}
// {1 1}
// {2 1}
//
// {0 2}
// {1 2}
// {2 2}
//
// {0 0}
// {0 1}
// {0 2}
//
// {1 0}
// {1 1}
// {1 2}
//
// {2 0}
// {2 1}
// {2 2}
//
// {0 0}
// {1 1}
// {2 2}
//
// {0 2}
// {1 1}
// {2 0}
}
// TestAllLinesIterator checks that the iterator actually goes through all lines
func TestAllLinesIterator(t *testing.T) {
expected := [][]TicTacToe.Coordinates{
// Rows
{
{0, 0},
{1, 0},
{2, 0},
},
{
{0, 1},
{1, 1},
{2, 1},
},
{
{0, 2},
{1, 2},
{2, 2},
},
// Columns
{
{0, 0},
{0, 1},
{0, 2},
},
{
{1, 0},
{1, 1},
{1, 2},
},
{
{2, 0},
{2, 1},
{2, 2},
},
// Diagonals
{
{0, 0},
{1, 1},
{2, 2},
},
{
{0, 2},
{1, 1},
{2, 0},
},
}
iterator := TicTacToe.NewAllLinesIterator()
assert.Len(t, iterator, len(expected))
for i, lineIterator := range iterator {
if !assert.True(t, len(expected) > i, "Line #%d, iterator %T", i, lineIterator) {
break
}
assert.Len(t, lineIterator, len(expected[i]), "Line #%d, iterator %T", i, lineIterator)
for i2, coordinates := range lineIterator {
if !assert.True(t, len(expected[i]) > i2, "Line #%d, cell #%d, iterator %T", i, i2, lineIterator) {
break
}
assert.Equal(t, expected[i][i2], coordinates, "Line #%d, cell #%d, iterator %T", i, i2, lineIterator)
}
}
}