64 lines
1.8 KiB
Go
64 lines
1.8 KiB
Go
// Copyright (c) 2019 Couchbase, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package geo
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import (
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"strings"
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"testing"
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)
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func TestDecodeGeoHash(t *testing.T) {
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tests := []struct {
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hash string
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lon float64
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lat float64
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}{
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{"d3hn3", -73.059082, 6.745605}, // -73.05908203, 6.74560547 as per http://geohash.co/
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{"u4pru", 10.393066, 57.634277}, // 10.39306641, 57.63427734
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{"u4pruy", 10.409546, 57.648010}, // 10.40954590, 57.64801025
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{"u4pruyd", 10.407486, 57.648697}, // 10.40748596, 57.64869690
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{"u4pruydqqvj", 10.40744, 57.64911}, // 10.40743969, 57.64911063
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}
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for _, test := range tests {
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lat, lon := DecodeGeoHash(test.hash)
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if compareGeo(test.lon, lon) != 0 {
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t.Errorf("expected lon %f, got %f, hash %s", test.lon, lon, test.hash)
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}
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if compareGeo(test.lat, lat) != 0 {
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t.Errorf("expected lat %f, got %f, hash %s", test.lat, lat, test.hash)
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}
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}
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}
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func TestEncodeGeoHash(t *testing.T) {
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tests := []struct {
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lon float64
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lat float64
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hash string
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}{
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{2.29449034, 48.85841131, "u09tunquc"},
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{76.491540, 10.060349, "t9y3hx7my0fp"},
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}
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for _, test := range tests {
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hash := EncodeGeoHash(test.lat, test.lon)
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if !strings.HasPrefix(hash, test.hash) {
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t.Errorf("expected hash %s, got %s", test.hash, hash)
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}
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}
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}
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