forked from dustin/go-heatmap
/
kml_test.go
164 lines (147 loc) · 3.79 KB
/
kml_test.go
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package heatmap
import (
"archive/zip"
"bytes"
"image"
"io"
"io/ioutil"
"strings"
"testing"
"github.com/dustin/go-heatmap/schemes"
"github.com/jteeuwen/imghash"
)
const testKmlImgURL = "http://www.example.com/thing.png"
const expKml = `<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Folder>
<GroundOverlay>
<Icon>
<href>http://www.example.com/thing.png</href>
</Icon>
<LatLonBox>
<north>1.0844535751966644</north>
<south>-0.0815174737483185</south>
<east>1.0688449455069537</east>
<west>-0.0780794272341640</west>
<rotation>0</rotation>
</LatLonBox>
</GroundOverlay></Folder></kml>`
const expKmz = `<?xml version="1.0" encoding="UTF-8"?>
<kml xmlns="http://www.opengis.net/kml/2.2">
<Folder>
<GroundOverlay>
<Icon>
<href>heatmap.png</href>
</Icon>
<LatLonBox>
<north>1.0844535751966644</north>
<south>-0.0815174737483185</south>
<east>1.0688449455069537</east>
<west>-0.0780794272341640</west>
<rotation>0</rotation>
</LatLonBox>
</GroundOverlay></Folder></kml>`
func xsimilar(a, b string) bool {
return strings.Join(strings.Fields(a), " ") ==
strings.Join(strings.Fields(b), " ")
}
func TestKML(t *testing.T) {
kmlBuf := &bytes.Buffer{}
img, err := KML(image.Rect(0, 0, 1024, 1024),
testPoints, 150, 128, schemes.AlphaFire,
testKmlImgURL, kmlBuf)
if err != nil {
t.Fatalf("Error generating kml: %v", err)
}
got := imghash.Average(img)
if got != expHash {
t.Errorf("Expected image hash %v, got %v", expHash, got)
}
gotK := kmlBuf.String()
if !xsimilar(gotK, expKml) {
t.Errorf("Expected kml=%v, got %v", expKml, gotK)
}
}
func TestKMLOutOfRange(t *testing.T) {
kmlBuf := &bytes.Buffer{}
_, err := KML(image.Rect(0, 0, 1024, 1024),
append(testPoints, P(-200, 0)), 150, 128, schemes.AlphaFire,
testKmlImgURL, kmlBuf)
if err == nil {
t.Fatalf("Expected error with bad input")
}
}
func TestKMZBadInput(t *testing.T) {
err := KMZ(image.Rect(0, 0, 1024, 1024),
append(testPoints, P(-200, 0)), 150, 128, schemes.AlphaFire,
ioutil.Discard)
if err == nil {
t.Fatalf("Expected error with bad input")
}
}
type writeFailer struct {
n int
}
func (w *writeFailer) Write(p []byte) (int, error) {
towrite := len(p)
var err error
if towrite > w.n {
towrite = w.n
err = io.EOF
}
w.n -= towrite
return towrite, err
}
func TestKMZBadWriter(t *testing.T) {
err := KMZ(image.Rect(0, 0, 1024, 1024),
testPoints, 150, 128, schemes.AlphaFire,
&writeFailer{514})
if err == nil {
t.Fatalf("Expected error with bad input")
}
}
func rzd(t *testing.T, zf *zip.File) []byte {
r, err := zf.Open()
if err != nil {
t.Fatalf("Error opening %v: %v", zf.Name, err)
}
defer r.Close()
data, err := ioutil.ReadAll(r)
if err != nil {
t.Fatalf("Error reading %v: %v", zf.Name, err)
}
return data
}
func TestKMZ(t *testing.T) {
buf := &bytes.Buffer{}
err := KMZ(image.Rect(0, 0, 1024, 1024),
testPoints, 150, 128, schemes.AlphaFire,
buf)
if err != nil {
t.Fatalf("Failed to build kmz: %v", err)
}
zr, err := zip.NewReader(bytes.NewReader(buf.Bytes()), int64(buf.Len()))
if err != nil {
t.Fatalf("Error reading kmz: %v", err)
}
for _, zf := range zr.File {
switch zf.Name {
case "doc.kml":
gotK := rzd(t, zf)
if !xsimilar(string(gotK), expKmz) {
t.Errorf("Expected kml=%v, got %s", expKmz, gotK)
}
case "heatmap.png":
img, _, err := image.Decode(bytes.NewReader(rzd(t, zf)))
if err != nil {
t.Errorf("Error decoding image: %v", err)
}
got := imghash.Average(img)
if got != expHash {
t.Errorf("Expected image hash %v, got %v", expHash, got)
}
default:
t.Fatalf("Unexpected zipfile name: %v", err)
}
}
}