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// Copyright 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package tokenizer
import (
"reflect"
"testing"
)
func TestTokenizer_Tokenize(t *testing.T) {
tests := []struct {
text string
want Tokens
}{
{
text: "Tokenize",
want: Tokens{&token{Text: "Tokenize", Offset: 0}},
},
{
text: "Hello world",
want: Tokens{
&token{Text: "Hello", Offset: 0},
&token{Text: "world", Offset: 6},
},
},
{
text: `Goodnight,
Irene
`,
want: Tokens{
&token{Text: "Goodnight", Offset: 0},
&token{Text: ",", Offset: 9},
&token{Text: "Irene", Offset: 11},
},
},
{
text: "Copyright © 2017 Yoyodyne, Inc.",
want: Tokens{
&token{Text: "Copyright", Offset: 0},
&token{Text: "©", Offset: 10},
&token{Text: "2017", Offset: 13},
&token{Text: "Yoyodyne", Offset: 18},
&token{Text: ",", Offset: 26},
&token{Text: "Inc", Offset: 28},
&token{Text: ".", Offset: 31},
},
},
}
for _, tt := range tests {
if got := Tokenize(tt.text); !reflect.DeepEqual(got, tt.want) {
t.Errorf("Tokenize(%q) = %+v, want %+v", tt.text, got, tt.want)
}
}
}
func TestTokenizer_GenerateHashes(t *testing.T) {
tests := []struct {
text string
sizeFactor int
wantHash []uint32
wantRanges TokenRanges
}{
{
text: "",
sizeFactor: 1,
wantHash: nil,
wantRanges: nil,
},
{
text: "Hashes",
sizeFactor: 1,
wantHash: []uint32{408116689},
wantRanges: TokenRanges{{Start: 0, End: 1}},
},
{
text: "hello world",
sizeFactor: 1,
wantHash: []uint32{222957957},
wantRanges: TokenRanges{{Start: 0, End: 2}},
},
{
text: "Copyright © 2017 Yoyodyne, Inc.",
sizeFactor: 3,
wantHash: []uint32{2473816729, 966085113, 3025678301, 3199087486, 850352802, 1274745089},
wantRanges: TokenRanges{
{Start: 0, End: 2},
{Start: 1, End: 3},
{Start: 2, End: 4},
{Start: 3, End: 5},
{Start: 4, End: 6},
{Start: 5, End: 7},
},
},
}
for _, tt := range tests {
hash := make(Hash)
toks := Tokenize(tt.text)
h, tr := toks.GenerateHashes(hash, len(toks)/tt.sizeFactor)
if !reflect.DeepEqual(h, tt.wantHash) {
t.Errorf("GenerateHashes(hash) = %v, want %v", h, tt.wantHash)
}
if !reflect.DeepEqual(tr, tt.wantRanges) {
t.Errorf("GenerateHashes(ranges) = %v, want %v", tr, tt.wantRanges)
}
}
}
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