File size: 29,478 Bytes
fab29d7
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
using System.Collections.ObjectModel;
using VersOne.Epub.Test.Comparers;
using VersOne.Epub.Test.Unit.Mocks;
using VersOne.Epub.Test.Unit.TestData;
using static VersOne.Epub.Test.Unit.TestData.TestEpubData;

namespace VersOne.Epub.Test.Unit.Content.Collections
{
    public class EpubContentCollectionRefTests
    {
        private static ReadOnlyCollection<EpubLocalTextContentFileRef> Local
        {
            get
            {
                List<EpubLocalTextContentFileRef> list = new()
                {
                    TestEpubContentRef.Chapter1FileRef,
                    TestEpubContentRef.Chapter2FileRef
                };
                return list.AsReadOnly();
            }
        }

        private static ReadOnlyCollection<EpubRemoteTextContentFileRef> Remote
        {
            get
            {
                List<EpubRemoteTextContentFileRef> list = new()
                {
                    TestEpubContentRef.RemoteHtmlContentFileRef,
                    TestEpubContentRef.RemoteCssContentFileRef
                };
                return list.AsReadOnly();
            }
        }

        private static IEpubContentLoader ContentLoader => new TestEpubContentLoader();

        [Fact(DisplayName = "Constructing a EpubContentCollectionRef instance with default parameters should succeed")]
        public void ConstructorWithNonNullParametersTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new();
            Assert.NotNull(epubContentCollectionRef.Local);
            Assert.Empty(epubContentCollectionRef.Local);
            Assert.NotNull(epubContentCollectionRef.Remote);
            Assert.Empty(epubContentCollectionRef.Remote);
        }

        [Fact(DisplayName = "Constructing a EpubContentCollectionRef instance with null local parameter should succeed")]
        public void ConstructorWithNullLocalParameterTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(null, Remote);
            Assert.NotNull(epubContentCollectionRef.Local);
            Assert.Empty(epubContentCollectionRef.Local);
            CompareRemoteTextRefReadOnlyCollections(Remote, epubContentCollectionRef.Remote);
        }

        [Fact(DisplayName = "Constructing a EpubContentCollectionRef instance with null remote parameter should succeed")]
        public void ConstructorWithNullRemoteParameterTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, null);
            CompareLocalTextRefReadOnlyCollections(Local, epubContentCollectionRef.Local);
            Assert.NotNull(epubContentCollectionRef.Remote);
            Assert.Empty(epubContentCollectionRef.Remote);
        }

        [Fact(DisplayName = "Constructor should throw EpubPackageException if local parameter contains content files with duplicate keys")]
        public void ConstructorWithLocalDuplicateKeysTest()
        {
            string duplicateKey = CHAPTER1_FILE_NAME;
            ReadOnlyCollection<EpubLocalTextContentFileRef> localWithDuplicateKeys = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    new EpubLocalTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: duplicateKey,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        filePath: CHAPTER1_FILE_PATH,
                        epubContentLoader: ContentLoader
                    ),
                    new EpubLocalTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: duplicateKey,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        filePath: CHAPTER2_FILE_PATH,
                        epubContentLoader: ContentLoader
                    )
                }
            );
            Assert.Throws<EpubPackageException>(() => new EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef>(localWithDuplicateKeys, Remote));
        }

        [Fact(DisplayName = "Constructor should throw EpubPackageException if local parameter contains content files with duplicate file paths")]
        public void ConstructorWithLocalDuplicateFilePathsTest()
        {
            string duplicateFilePath = CHAPTER1_FILE_PATH;
            ReadOnlyCollection<EpubLocalTextContentFileRef> localWithDuplicateFilePaths = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    new EpubLocalTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: CHAPTER1_FILE_NAME,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        filePath: duplicateFilePath,
                        epubContentLoader: ContentLoader
                    ),
                    new EpubLocalTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: CHAPTER2_FILE_NAME,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        filePath: duplicateFilePath,
                        epubContentLoader: ContentLoader
                    )
                }
            );
            Assert.Throws<EpubPackageException>(() => new EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef>(localWithDuplicateFilePaths, Remote));
        }

        [Fact(DisplayName = "Constructor should throw EpubPackageException if remote parameter contains content files with duplicate URLs")]
        public void ConstructorWithRemoteDuplicateUrlsTest()
        {
            string duplicateKey = REMOTE_HTML_CONTENT_FILE_HREF;
            ReadOnlyCollection<EpubRemoteTextContentFileRef> remoteWithDuplicateKeys = new
            (
                new List<EpubRemoteTextContentFileRef>()
                {
                    new EpubRemoteTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: duplicateKey,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        epubContentLoader: ContentLoader
                    ),
                    new EpubRemoteTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: duplicateKey,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        epubContentLoader: ContentLoader
                    )
                }
            );
            Assert.Throws<EpubPackageException>(() => new EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef>(Local, remoteWithDuplicateKeys));
        }

        [Fact(DisplayName = "ContainsLocalFileRefWithKey should return true if the local file reference with the given key exists and false otherwise")]
        public void ContainsLocalFileWithKeyWithNonNullKeyTest()
        {
            string existingKey = CHAPTER1_FILE_NAME;
            string nonExistingKey = CHAPTER2_FILE_NAME;
            ReadOnlyCollection<EpubLocalTextContentFileRef> local = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    new EpubLocalTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: existingKey,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        filePath: CHAPTER1_FILE_PATH,
                        epubContentLoader: ContentLoader
                    )
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(local, Remote);
            Assert.True(epubContentCollectionRef.ContainsLocalFileRefWithKey(existingKey));
            Assert.False(epubContentCollectionRef.ContainsLocalFileRefWithKey(nonExistingKey));
        }

        [Fact(DisplayName = "ContainsLocalFileRefWithKey should throw ArgumentNullException if key argument is null")]
        public void ContainsLocalFileWithKeyWithNullKeyTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, Remote);
            Assert.Throws<ArgumentNullException>(() => epubContentCollectionRef.ContainsLocalFileRefWithKey(null!));
        }

        [Fact(DisplayName = "GetLocalFileRefByKey should return the local file reference with the given key if it exists")]
        public void GetLocalFileByKeyWithExistingKeyTest()
        {
            string existingKey = CHAPTER1_FILE_NAME;
            EpubLocalTextContentFileRef expectedFileRef = new
            (
                metadata: new EpubContentFileRefMetadata
                (
                    key: existingKey,
                    contentType: HTML_CONTENT_TYPE,
                    contentMimeType: HTML_CONTENT_MIME_TYPE
                ),
                filePath: CHAPTER1_FILE_PATH,
                epubContentLoader: ContentLoader
            );
            ReadOnlyCollection<EpubLocalTextContentFileRef> local = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    expectedFileRef
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(local, Remote);
            EpubLocalTextContentFileRef actualFileRef = epubContentCollectionRef.GetLocalFileRefByKey(existingKey);
            EpubContentRefComparer.CompareEpubLocalContentFileRefs(expectedFileRef, actualFileRef);
        }

        [Fact(DisplayName = "GetLocalFileRefByKey should throw EpubContentCollectionRefException if the local file reference with the given key doesn't exist")]
        public void GetLocalFileByKeyWithNonExistingKeyTest()
        {
            string nonExistingKey = CHAPTER2_FILE_NAME;
            ReadOnlyCollection<EpubLocalTextContentFileRef> local = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    new EpubLocalTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: CHAPTER1_FILE_NAME,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        filePath: CHAPTER1_FILE_PATH,
                        epubContentLoader: ContentLoader
                    )
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(local, Remote);
            Assert.Throws<EpubContentCollectionRefException>(() => epubContentCollectionRef.GetLocalFileRefByKey(nonExistingKey));
        }

        [Fact(DisplayName = "GetLocalFileRefByKey should throw ArgumentNullException if key argument is null")]
        public void GetLocalFileByKeyWithNullKeyTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, Remote);
            Assert.Throws<ArgumentNullException>(() => epubContentCollectionRef.GetLocalFileRefByKey(null!));
        }

        [Fact(DisplayName = "TryGetLocalFileRefByKey should return true with the local file reference with the given key if it exists and false with null reference otherwise")]
        public void TryGetLocalFileByKeyWithNonNullKeyTest()
        {
            string existingKey = CHAPTER1_FILE_NAME;
            string nonExistingKey = CHAPTER2_FILE_NAME;
            EpubLocalTextContentFileRef expectedFileRef = new
            (
                metadata: new EpubContentFileRefMetadata
                (
                    key: existingKey,
                    contentType: HTML_CONTENT_TYPE,
                    contentMimeType: HTML_CONTENT_MIME_TYPE
                ),
                filePath: CHAPTER1_FILE_PATH,
                epubContentLoader: ContentLoader
            );
            ReadOnlyCollection<EpubLocalTextContentFileRef> local = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    expectedFileRef
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(local, Remote);
            Assert.True(epubContentCollectionRef.TryGetLocalFileRefByKey(existingKey, out EpubLocalTextContentFileRef actualFileRefForExistingKey));
            EpubContentRefComparer.CompareEpubLocalContentFileRefs(expectedFileRef, actualFileRefForExistingKey);
            Assert.False(epubContentCollectionRef.TryGetLocalFileRefByKey(nonExistingKey, out EpubLocalTextContentFileRef actualFileRefForNonExistingKey));
            Assert.Null(actualFileRefForNonExistingKey);
        }

        [Fact(DisplayName = "TryGetLocalFileRefByKey should throw ArgumentNullException if key argument is null")]
        public void TryGetLocalFileByKeyWithNullKeyTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, Remote);
            Assert.Throws<ArgumentNullException>(() => epubContentCollectionRef.TryGetLocalFileRefByKey(null!, out _));
        }

        [Fact(DisplayName = "ContainsLocalFileRefWithFilePath should return true if the local file reference with the given file path exists and false otherwise")]
        public void ContainsLocalFileWithFilePathWithNonNullFilePathTest()
        {
            string existingFilePath = CHAPTER1_FILE_PATH;
            string nonExistingFilePath = CHAPTER2_FILE_PATH;
            ReadOnlyCollection<EpubLocalTextContentFileRef> local = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    new EpubLocalTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: CHAPTER1_FILE_NAME,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        filePath: existingFilePath,
                        epubContentLoader: ContentLoader
                    )
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(local, Remote);
            Assert.True(epubContentCollectionRef.ContainsLocalFileRefWithFilePath(existingFilePath));
            Assert.False(epubContentCollectionRef.ContainsLocalFileRefWithFilePath(nonExistingFilePath));
        }

        [Fact(DisplayName = "ContainsLocalFileRefWithFilePath should throw ArgumentNullException if filePath argument is null")]
        public void ContainsLocalFileWithFilePathWithNullFilePathTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, Remote);
            Assert.Throws<ArgumentNullException>(() => epubContentCollectionRef.ContainsLocalFileRefWithFilePath(null!));
        }

        [Fact(DisplayName = "GetLocalFileRefByFilePath should return the local file reference with the given file path if it exists")]
        public void GetLocalFileByFilePathWithExistingFilePathTest()
        {
            string existingFilePath = CHAPTER1_FILE_PATH;
            EpubLocalTextContentFileRef expectedFileRef = new
            (
                metadata: new EpubContentFileRefMetadata
                (
                    key: CHAPTER1_FILE_NAME,
                    contentType: HTML_CONTENT_TYPE,
                    contentMimeType: HTML_CONTENT_MIME_TYPE
                ),
                filePath: existingFilePath,
                epubContentLoader: ContentLoader
            );
            ReadOnlyCollection<EpubLocalTextContentFileRef> local = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    expectedFileRef
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(local, Remote);
            EpubLocalTextContentFileRef actualFileRef = epubContentCollectionRef.GetLocalFileRefByFilePath(existingFilePath);
            EpubContentRefComparer.CompareEpubLocalContentFileRefs(expectedFileRef, actualFileRef);
        }

        [Fact(DisplayName = "GetLocalFileRefByFilePath should throw EpubContentCollectionRefException if the local file reference with the given file path doesn't exist")]
        public void GetLocalFileByFilePathWithNonExistingFilePathTest()
        {
            string nonExistingFilePath = CHAPTER2_FILE_PATH;
            ReadOnlyCollection<EpubLocalTextContentFileRef> local = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    new EpubLocalTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: CHAPTER1_FILE_NAME,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        filePath: CHAPTER1_FILE_PATH,
                        epubContentLoader: ContentLoader
                    )
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(local, Remote);
            Assert.Throws<EpubContentCollectionRefException>(() => epubContentCollectionRef.GetLocalFileRefByFilePath(nonExistingFilePath));
        }

        [Fact(DisplayName = "GetLocalFileRefByFilePath should throw ArgumentNullException if filePath argument is null")]
        public void GetLocalFileByFilePathWithNullFilePathTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, Remote);
            Assert.Throws<ArgumentNullException>(() => epubContentCollectionRef.GetLocalFileRefByFilePath(null!));
        }

        [Fact(DisplayName = "TryGetLocalFileRefByFilePath should return true with the local file reference with the given file path if it exists and false with null reference otherwise")]
        public void TryGetLocalFileByFilePathWithNonNullFilePathTest()
        {
            string existingFilePath = CHAPTER1_FILE_PATH;
            string nonExistingFilePath = CHAPTER2_FILE_PATH;
            EpubLocalTextContentFileRef expectedFileRef = new
            (
                metadata: new EpubContentFileRefMetadata
                (
                    key: CHAPTER1_FILE_NAME,
                    contentType: HTML_CONTENT_TYPE,
                    contentMimeType: HTML_CONTENT_MIME_TYPE
                ),
                filePath: existingFilePath,
                epubContentLoader: ContentLoader
            );
            ReadOnlyCollection<EpubLocalTextContentFileRef> local = new
            (
                new List<EpubLocalTextContentFileRef>()
                {
                    expectedFileRef
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(local, Remote);
            Assert.True(epubContentCollectionRef.TryGetLocalFileRefByFilePath(existingFilePath, out EpubLocalTextContentFileRef actualFileRefForExistingFilePath));
            EpubContentRefComparer.CompareEpubLocalContentFileRefs(expectedFileRef, actualFileRefForExistingFilePath);
            Assert.False(epubContentCollectionRef.TryGetLocalFileRefByFilePath(nonExistingFilePath, out EpubLocalTextContentFileRef actualFileRefForNonExistingFilePath));
            Assert.Null(actualFileRefForNonExistingFilePath);
        }

        [Fact(DisplayName = "TryGetLocalFileRefByFilePath should throw ArgumentNullException if filePath argument is null")]
        public void TryGetLocalFileByFilePathWithNullFilePathTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, Remote);
            Assert.Throws<ArgumentNullException>(() => epubContentCollectionRef.TryGetLocalFileRefByFilePath(null!, out _));
        }

        [Fact(DisplayName = "ContainsRemoteFileRefWithUrl should return true if the remote file reference with the given URL exists and false otherwise")]
        public void ContainsRemoteFileWithUrlWithNonNullUrlTest()
        {
            string existingUrl = REMOTE_HTML_CONTENT_FILE_HREF;
            string nonExistingUrl = REMOTE_CSS_CONTENT_FILE_HREF;
            ReadOnlyCollection<EpubRemoteTextContentFileRef> remote = new
            (
                new List<EpubRemoteTextContentFileRef>()
                {
                    new EpubRemoteTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: existingUrl,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        epubContentLoader: ContentLoader
                    )
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, remote);
            Assert.True(epubContentCollectionRef.ContainsRemoteFileRefWithUrl(existingUrl));
            Assert.False(epubContentCollectionRef.ContainsRemoteFileRefWithUrl(nonExistingUrl));
        }

        [Fact(DisplayName = "ContainsRemoteFileRefWithUrl should throw ArgumentNullException if url argument is null")]
        public void ContainsRemoteFileWithUrlWithNullUrlTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, Remote);
            Assert.Throws<ArgumentNullException>(() => epubContentCollectionRef.ContainsRemoteFileRefWithUrl(null!));
        }

        [Fact(DisplayName = "GetRemoteFileRefByUrl should return the remote file reference with the given URL if it exists")]
        public void GetRemoteFileByUrlWithExistingUrlTest()
        {
            string existingUrl = REMOTE_HTML_CONTENT_FILE_HREF;
            EpubRemoteTextContentFileRef expectedFileRef = new
            (
                metadata: new EpubContentFileRefMetadata
                (
                    key: existingUrl,
                    contentType: HTML_CONTENT_TYPE,
                    contentMimeType: HTML_CONTENT_MIME_TYPE
                ),
                epubContentLoader: ContentLoader
            );
            ReadOnlyCollection<EpubRemoteTextContentFileRef> remote = new
            (
                new List<EpubRemoteTextContentFileRef>()
                {
                    expectedFileRef
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, remote);
            EpubRemoteTextContentFileRef actualFileRef = epubContentCollectionRef.GetRemoteFileRefByUrl(existingUrl);
            EpubContentRefComparer.CompareEpubRemoteContentFileRefs(expectedFileRef, actualFileRef);
        }

        [Fact(DisplayName = "GetRemoteFileRefByUrl should throw EpubContentCollectionRefException if the remote file reference with the given URL doesn't exist")]
        public void GetRemoteFileByUrlWithNonExistingUrlTest()
        {
            string nonExistingUrl = REMOTE_CSS_CONTENT_FILE_HREF;
            ReadOnlyCollection<EpubRemoteTextContentFileRef> remote = new
            (
                new List<EpubRemoteTextContentFileRef>()
                {
                    new EpubRemoteTextContentFileRef
                    (
                        metadata: new EpubContentFileRefMetadata
                        (
                            key: REMOTE_HTML_CONTENT_FILE_HREF,
                            contentType: HTML_CONTENT_TYPE,
                            contentMimeType: HTML_CONTENT_MIME_TYPE
                        ),
                        epubContentLoader: ContentLoader
                    )
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, remote);
            Assert.Throws<EpubContentCollectionRefException>(() => epubContentCollectionRef.GetRemoteFileRefByUrl(nonExistingUrl));
        }

        [Fact(DisplayName = "GetRemoteFileRefByUrl should throw ArgumentNullException if url argument is null")]
        public void GetRemoteFileByUrlWithNullUrlTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, Remote);
            Assert.Throws<ArgumentNullException>(() => epubContentCollectionRef.GetRemoteFileRefByUrl(null!));
        }

        [Fact(DisplayName = "TryGetRemoteFileRefByUrl should return true with the remote file reference with the given URL if it exists and false with null reference otherwise")]
        public void TryGetRemoteFileByUrlWithNonNullUrlTest()
        {
            string existingUrl = REMOTE_HTML_CONTENT_FILE_HREF;
            string nonExistingUrl = REMOTE_CSS_CONTENT_FILE_HREF;
            EpubRemoteTextContentFileRef expectedFileRef = new
            (
                metadata: new EpubContentFileRefMetadata
                (
                    key: existingUrl,
                    contentType: HTML_CONTENT_TYPE,
                    contentMimeType: HTML_CONTENT_MIME_TYPE
                ),
                epubContentLoader: ContentLoader
            );
            ReadOnlyCollection<EpubRemoteTextContentFileRef> remote = new
            (
                new List<EpubRemoteTextContentFileRef>()
                {
                    expectedFileRef
                }
            );
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, remote);
            Assert.True(epubContentCollectionRef.TryGetRemoteFileRefByUrl(existingUrl, out EpubRemoteTextContentFileRef actualFileRefForExistingUrl));
            EpubContentRefComparer.CompareEpubRemoteContentFileRefs(expectedFileRef, actualFileRefForExistingUrl);
            Assert.False(epubContentCollectionRef.TryGetRemoteFileRefByUrl(nonExistingUrl, out EpubRemoteTextContentFileRef actualFileRefForNonExistingUrl));
            Assert.Null(actualFileRefForNonExistingUrl);
        }

        [Fact(DisplayName = "TryGetRemoteFileRefByUrl should throw ArgumentNullException if url argument is null")]
        public void TryGetRemoteFileByUrlWithNullUrlTest()
        {
            EpubContentCollectionRef<EpubLocalTextContentFileRef, EpubRemoteTextContentFileRef> epubContentCollectionRef = new(Local, Remote);
            Assert.Throws<ArgumentNullException>(() => epubContentCollectionRef.TryGetRemoteFileRefByUrl(null!, out _));
        }

        private static void CompareLocalTextRefReadOnlyCollections(ReadOnlyCollection<EpubLocalTextContentFileRef> expected, ReadOnlyCollection<EpubLocalTextContentFileRef> actual)
        {
            CollectionComparer.CompareCollections(expected, actual, EpubContentRefComparer.CompareEpubLocalContentFileRefs);
        }

        private static void CompareRemoteTextRefReadOnlyCollections(ReadOnlyCollection<EpubRemoteTextContentFileRef> expected, ReadOnlyCollection<EpubRemoteTextContentFileRef> actual)
        {
            CollectionComparer.CompareCollections(expected, actual, EpubContentRefComparer.CompareEpubRemoteContentFileRefs);
        }
    }
}