render_engine_test.go

package latvis

import (
	"github.com/mrjones/gt"

	"testing"
)

func TestSquareBox(t *testing.T) {
	box, err := NewBoundingBox(
		Coordinate{Lat: 0, Lng: 0},
		Coordinate{Lat: 10, Lng: 10})
	gt.AssertNil(t, err)

	w, h := imgSize(box, 500)

	gt.AssertEqualM(t, 500, w, "Width should be maxed for a square box")
	gt.AssertEqualM(t, 500, h, "Height should be maxed for a square box")
}

func TestWideBox(t *testing.T) {
	box, err := NewBoundingBox(
		Coordinate{Lat: 0, Lng: 0},
		Coordinate{Lat: 10, Lng: 100})
	gt.AssertNil(t, err)

	w, h := imgSize(box, 500)

	gt.AssertEqualM(t, 500, w, "Width should be maxed for a wide box")
	gt.AssertEqualM(t, 50, h, "Height should be short for a wide box")
}

func TestTallBox(t *testing.T) {
	box, err := NewBoundingBox(
		Coordinate{Lat: 0, Lng: 0},
		Coordinate{Lat: 10, Lng: 5})
	gt.AssertNil(t, err)

	w, h := imgSize(box, 500)

	gt.AssertEqualM(t, 250, w, "Width should be narrow for a tall box")
	gt.AssertEqualM(t, 500, h, "Height should be maxed for a tall box")
}