github.com/pdfcpu/pdfcpu@v0.11.1/pkg/api/test/keyword_test.go (about)

     1  /*
     2  Copyright 2020 The pdf Authors.
     3  
     4  Licensed under the Apache License, Version 2.0 (the "License");
     5  you may not use this file except in compliance with the License.
     6  You may obtain a copy of the License at
     7  
     8  	http://www.apache.org/licenses/LICENSE-2.0
     9  
    10  Unless required by applicable law or agreed to in writing, software
    11  distributed under the License is distributed on an "AS IS" BASIS,
    12  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  See the License for the specific language governing permissions and
    14  limitations under the License.
    15  */
    16  
    17  package test
    18  
    19  import (
    20  	"os"
    21  	"path/filepath"
    22  	"testing"
    23  
    24  	"github.com/pdfcpu/pdfcpu/pkg/api"
    25  	"github.com/pdfcpu/pdfcpu/pkg/pdfcpu/model"
    26  	"github.com/pdfcpu/pdfcpu/pkg/pdfcpu/types"
    27  )
    28  
    29  func listKeywordsFile(t *testing.T, fileName string, conf *model.Configuration) ([]string, error) {
    30  	t.Helper()
    31  
    32  	msg := "listKeywords"
    33  
    34  	f, err := os.Open(fileName)
    35  	if err != nil {
    36  		t.Fatalf("%s open: %v\n", msg, err)
    37  	}
    38  	defer f.Close()
    39  
    40  	return api.Keywords(f, conf)
    41  }
    42  
    43  func listKeywords(t *testing.T, msg, fileName string, want []string) []string {
    44  	t.Helper()
    45  
    46  	got, err := listKeywordsFile(t, fileName, nil)
    47  	if err != nil {
    48  		t.Fatalf("%s list keywords: %v\n", msg, err)
    49  	}
    50  
    51  	// # of keywords must be want
    52  	if len(got) != len(want) {
    53  		t.Fatalf("%s: list keywords %s: want %d got %d\n", msg, fileName, len(want), len(got))
    54  	}
    55  
    56  	for _, v := range got {
    57  		if !types.MemberOf(v, want) {
    58  			t.Fatalf("%s: list keywords %s: want %v got %v\n", msg, fileName, want, got)
    59  		}
    60  	}
    61  	return got
    62  }
    63  
    64  func TestKeywords(t *testing.T) {
    65  	msg := "TestKeywords"
    66  
    67  	fileName := filepath.Join(outDir, "go.pdf")
    68  	if err := copyFile(t, filepath.Join(inDir, "go.pdf"), fileName); err != nil {
    69  		t.Fatalf("%s: copyFile: %v\n", msg, err)
    70  	}
    71  
    72  	// # of keywords must be 0
    73  	listKeywords(t, msg, fileName, nil)
    74  
    75  	keywords := []string{"Ö", "你好"}
    76  	if err := api.AddKeywordsFile(fileName, "", keywords, nil); err != nil {
    77  		t.Fatalf("%s add keywords: %v\n", msg, err)
    78  	}
    79  	listKeywords(t, msg, fileName, keywords)
    80  
    81  	keywords = []string{"world"}
    82  	if err := api.AddKeywordsFile(fileName, "", keywords, nil); err != nil {
    83  		t.Fatalf("%s add keywords: %v\n", msg, err)
    84  	}
    85  	listKeywords(t, msg, fileName, []string{"Ö", "你好", "world"})
    86  
    87  	if err := api.RemoveKeywordsFile(fileName, "", []string{"你好"}, nil); err != nil {
    88  		t.Fatalf("%s remove 1 keyword: %v\n", msg, err)
    89  	}
    90  	listKeywords(t, msg, fileName, []string{"Ö", "world"})
    91  
    92  	if err := api.RemoveKeywordsFile(fileName, "", nil, nil); err != nil {
    93  		t.Fatalf("%s remove all keywords: %v\n", msg, err)
    94  	}
    95  
    96  	// # of keywords must be 0
    97  	listKeywords(t, msg, fileName, nil)
    98  }