rect/triangle_test.go
Derek McQuay 4ad50ba37c added area of three points
I am going to use the area of triangles when determining if the point is
inside of another square to determine containment.  This was just an
important step
2016-08-26 12:02:43 -07:00

26 lines
571 B
Go

package rect
import "testing"
func TestSizeTriangle(t *testing.T) {
var sizeTriangleTests = []struct {
pts []Point
expected float64
}{
{[]Point{Point{-2, 3}, Point{-3, -1}, Point{3, -2}}, 12.5},
{[]Point{Point{0, 0}, Point{1, 1}, Point{0, 1}}, 0.5},
{[]Point{Point{10, 14}, Point{20, 15}, Point{12, 52}}, 189},
}
for _, rt := range sizeTriangleTests {
actual := SizeTriangle(rt.pts[0], rt.pts[1], rt.pts[2])
if actual != rt.expected {
t.Errorf(
"failed spiral:\n\texpected: %d\n\t actual: %d",
rt.expected,
actual,
)
}
}
}