115 lines
1.4 KiB
Go
115 lines
1.4 KiB
Go
package imgrow
|
|
|
|
import (
|
|
"testing"
|
|
|
|
"image"
|
|
)
|
|
|
|
func TestScalePoint(t *testing.T) {
|
|
|
|
tests := []struct{
|
|
Scalar int
|
|
Point image.Point
|
|
Expected image.Point
|
|
}{
|
|
{
|
|
Scalar: -2,
|
|
Point: image.Point{
|
|
X: 5,
|
|
Y: 7,
|
|
},
|
|
Expected: image.Point{
|
|
X: -10,
|
|
Y: -14,
|
|
},
|
|
},
|
|
{
|
|
Scalar: -1,
|
|
Point: image.Point{
|
|
X: 5,
|
|
Y: 7,
|
|
},
|
|
Expected: image.Point{
|
|
X: -5,
|
|
Y: -7,
|
|
},
|
|
},
|
|
{
|
|
Scalar: 0,
|
|
Point: image.Point{
|
|
X: 5,
|
|
Y: 7,
|
|
},
|
|
Expected: image.Point{
|
|
X: 0,
|
|
Y: 0,
|
|
},
|
|
},
|
|
{
|
|
Scalar: 1,
|
|
Point: image.Point{
|
|
X: 5,
|
|
Y: 7,
|
|
},
|
|
Expected: image.Point{
|
|
X: 5,
|
|
Y: 7,
|
|
},
|
|
},
|
|
{
|
|
Scalar: 2,
|
|
Point: image.Point{
|
|
X: 5,
|
|
Y: 7,
|
|
},
|
|
Expected: image.Point{
|
|
X: 10,
|
|
Y: 14,
|
|
},
|
|
},
|
|
{
|
|
Scalar: 3,
|
|
Point: image.Point{
|
|
X: 5,
|
|
Y: 7,
|
|
},
|
|
Expected: image.Point{
|
|
X: 15,
|
|
Y: 21,
|
|
},
|
|
},
|
|
|
|
|
|
|
|
|
|
{
|
|
Scalar: 100,
|
|
Point: image.Point{
|
|
X: -11,
|
|
Y: 13,
|
|
},
|
|
Expected: image.Point{
|
|
X: -1100,
|
|
Y: 1300,
|
|
},
|
|
},
|
|
}
|
|
|
|
for testNumber, test := range tests {
|
|
|
|
actual := scalePoint(test.Scalar, test.Point)
|
|
expected := test.Expected
|
|
|
|
if expected != actual {
|
|
t.Errorf("For test #%d, the actual value is not what was expected.", testNumber)
|
|
t.Logf("EXPECTED: %v", expected)
|
|
t.Logf("ACTUAL: %v", actual)
|
|
t.Logf("SCALAR = %d", test.Scalar)
|
|
t.Logf("POINT: %v", test.Point)
|
|
continue
|
|
}
|
|
|
|
}
|
|
}
|