byjp.me
A tool for archiving & converting scans of postcards, and information about them.
1package types_test
2
3import (
4 "fmt"
5 "testing"
6
7 . "github.com/jphastings/dotpostcard/types"
8 "github.com/stretchr/testify/assert"
9)
10
11var transformCases = []struct {
12 onFront bool
13 flip Flip
14 transformed Point
15}{
16 {true, FlipNone, Point{X: 0.13, Y: 0.17}},
17
18 {true, FlipBook, Point{X: 0.13, Y: 0.085}},
19 {false, FlipBook, Point{X: 0.13, Y: 0.585}},
20
21 {true, FlipCalendar, Point{X: 0.13, Y: 0.085}},
22 {false, FlipCalendar, Point{X: 0.13, Y: 0.585}},
23
24 {true, FlipLeftHand, Point{X: 0.13, Y: 0.085}},
25 {false, FlipLeftHand, Point{X: 0.17, Y: 0.935}},
26
27 {true, FlipRightHand, Point{X: 0.13, Y: 0.085}},
28 {false, FlipRightHand, Point{X: 0.83, Y: 0.565}},
29}
30
31// Accuracy of floating point results
32const acc = 0.0000000001
33
34func TestTransformToDoubleSided(t *testing.T) {
35 original := Point{X: 0.13, Y: 0.17}
36
37 for _, c := range transformCases {
38 t.Run(fmt.Sprintf("Front:%v-Flip:%s", c.onFront, c.flip), func(t *testing.T) {
39 got := original.TransformToDoubleSided(c.onFront, c.flip)
40 assert.InDelta(t, c.transformed.X, got.X, acc, "Incorrect X value: wanted %v got %v", c.transformed.X, got.X)
41 assert.InDelta(t, c.transformed.Y, got.Y, acc, "Incorrect Y value: wanted %v got %v", c.transformed.X, got.Y)
42 })
43 }
44}
45
46func TestTransformToSingleSided(t *testing.T) {
47 original := Point{X: 0.13, Y: 0.17}
48
49 for _, c := range transformCases {
50 t.Run(fmt.Sprintf("Front:%v-Flip:%s", c.onFront, c.flip), func(t *testing.T) {
51 got := c.transformed.TransformToSingleSided(c.onFront, c.flip)
52 assert.InDelta(t, original.X, got.X, acc, "Incorrect X value: wanted %v got %v", original.X, got.X)
53 assert.InDelta(t, original.Y, got.Y, acc, "Incorrect Y value: wanted %v got %v", original.X, got.Y)
54 })
55 }
56}