point2d/point_test.go

package point2d

import (
	"testing"
)

func TestPoint2Set(t *testing.T) {
	p := &Point{
		1,
		3,
	}
	if p.X != 1 || p.Y != 3 {
		t.Fail()
		t.Logf("Point expected to be '1 3' got '%d %d'", p.X, p.Y)
	}
	if p.String() != "1 3" {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point.String() expected to be '1 3' got '%s'", p.String())
	}
	p.Set(2)
	if p.X != 2 || p.Y != 2 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '2 2' got '%s'", p)
	}
	p.SetTo(&Point{3, 4})
	if p.X != 3 || p.Y != 4 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '3 4' got '%s'", p)
	}
}

func TestPoint2Move(t *testing.T) {
	p := &Point{1, 1}
	if p.X != 1 || p.Y != 1 {
		t.Fail()
		t.Logf("Point expected to be '1 1' got '%s'", p)
	}
	p.Move(1, -1)
	if p.X != 2 || p.Y != 0 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '2 0' got '%s'", p)
	}
	p.Set(1, 1)
	p.MoveBy(&Point{1, -1})
	if p.X != 2 || p.Y != 0 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '2 0' got '%s'", p)
	}
	p.Move(-2, 2).Move(1, -1)
	if p.X != 1 || p.Y != 1 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '1 1' got '%s'", p)
	}
	p.Set(1, 1)
	p.Move(3)
	if !p.Equal(4) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '4 4' got '%s'", p)
	}
	if p.Equal() {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point.Equal called with no values, should always return false")
	}
}

func TestPoint2Zero(t *testing.T) {
	p := &Point{1, 1}
	if p.X != 1 || p.Y != 1 {
		t.Fail()
		t.Logf("Point expected to be '1 1' got '%s'", p)
	}
	if p.IsZero() {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point not zero, Point is '%s'", p)
	}
	p.Zero()
	if p.X != 0 || p.Y != 0 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '0 0' got '%s'", p)
	}
	if !p.IsZero() {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point is zero, Point is '%s'", p)
	}
}

func TestPoint2Negate(t *testing.T) {
	p := &Point{1, 1}
	if !p.Equal(1) {
		t.Fail()
		t.Logf("Point expected to be '1 1' got '%s'", p)
	}
	p.Negate()
	if p.X != -1 || p.Y != -1 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '-1 -1' got '%s'", p)
	}
	p.Negate()
	if !p.EqualTo(&Point{1, 1}) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '1 1' got '%s'", p)
	}
	p.Set(-3, -4)
	if !p.Equal(-3, -4) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected ot be '-3 -4' got '%s'", p)
	}
	p.Abs()
	if !p.Equal(3, 4) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point expected to be '3 4' got '%s'", p)
	}
}

func TestPoint2Copy(t *testing.T) {
	p := &Point{3, 4}
	p2 := p.Copy()
	p.Set(2)
	if p2.EqualTo(p) {
		t.Fail()
		t.Logf("p2 expected to not equal '2 2' got '%s' (Point = '%s')", p2, p)
	}
}

func TestPoint2Axis(t *testing.T) {
	p := &Point{3, 4}
	if p.IsX(2) {
		t.Fail()
		t.Logf("Point not on X axis 2, Point is '%s'", p)
	}
	if !p.IsY(4) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point is on Y axis 4, Point is '%s'", p)
	}
}

func TestPoint2LessGreater(t *testing.T) {
	p := &Point{3, 4}
	if !p.Equal(3, 4) {
		t.Fail()
		t.Logf("Point expected to be '3 4' got '%s'", p)
	}
	if p.Greater(5) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point should be less than 5, Point is '%s'", p)
	}
	if !p.Greater(3, 3) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point should be greater than 3 3, Point is '%s'", p)
	}
	if p.Greater() {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point.Greater() should always return false")
	}
	if !p.GreaterThan(&Point{2, 2}) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point should be greater than '2 2', Point is '%s'", p)
	}
	if p.Less(1) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point should be greater than 1, Point is '%s'", p)
	}
	if !p.Less(10, 10) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point should be less than 10 10, Point is '%s'", p)
	}
	if p.Less() {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point.Less() should always return false")
	}
	if !p.LessThan(&Point{15, 15}) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point should be less than '15 15', Point is '%s'", p)
	}
}

func TestPoint2Distance(t *testing.T) {
	p := &Point{3, 4}
	if !p.Equal(3, 4) {
		t.Fail()
		t.Logf("Point expected to be '3 4' got '%s'", p)
	}
	if p.Distance(0, 0) != 4 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point distance to 0 0 should be 4, got %d", p.Distance(0, 0))
	}
	if p.DistanceTo(&Point{0, 0}) != 4 {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Point distance to '0 0' should be 4, got %d", p.DistanceTo(&Point{0, 0}))
	}
}

func TestPoint2Within(t *testing.T) {
	p := &Point{5, 5}

	if !p.Equal(5) {
		t.Fail()
		t.Logf("Points not equal assigned values p='%s'", p)
	}

	if !p.Within(&Point{5, 5}, &Point{10, 10}) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("p == topLeft, but returned false")
	}
	p.Set(10, 10)
	if !p.Within(&Point{5, 5}, &Point{10, 10}) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("p == botRight, but returned false")
	}
	p.Set(5, 5)

	var (
		tmp *Point = &Point{}
		y   int
		x   int
	)
	for y = 0; y <= 11; y++ {
		for x = 0; x <= 11; x++ {
			tmp.Set(x, y)
			if tmp.X == 0 || tmp.Y == 0 {
				if !tmp.Within(&Point{0, 0}, &Point{11, 11}) {
					if !t.Failed() {
						t.Fail()
					}
					t.Logf("'%s' not in '0 0' '11 11'?", tmp)
				}
			}
			if !tmp.Within(&Point{}, &Point{11, 11}) {
				if !t.Failed() {
					t.Fail()
				}
				t.Logf("'%s' not in '0 0' '11 11'?", tmp)
			}
		}
	}

	if p.Within(&Point{20, 25}, &Point{15, 12}) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("'%s' in '15 12' '20 25'?", p)
	}
	if p.Within(&Point{10, 10}, &Point{10, 10}) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("'%s' in '10 10' '10 10'?", p)
	}
}

func TestPointNew(t *testing.T) {
	var p *Point = NewPoint()
	if p == nil {
		t.Fail()
		t.Logf("Expected a point at '0 0', but got nil")
	}
	if !p.IsZero() {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Expected a point at '0 0', but got '%s'", p)
	}
}

func TestPointAs(t *testing.T) {
	var p *Point = AsPoint(3, 2)
	if p == nil {
		t.Fail()
		t.Logf("Expected a point, got nil")
	}
	if !p.Equal(3, 2) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Expected a point at '3 2', got '%s'", p)
	}
	p = AsPoint(5)
	if p == nil {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Expected a point, got nil")
	}
	if !p.Equal(5, 5) {
		if !t.Failed() {
			t.Fail()
		}
		t.Logf("Expected a point at '5 5', got '%s'", p)
	}
}