1 /* 2 * Copyright (C) 2011 The Android Open Source Project 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 com.android.emailcommon.utility; 18 19 import com.android.emailcommon.provider.EmailContent; 20 21 import android.net.Uri; 22 import android.test.AndroidTestCase; 23 import android.test.suitebuilder.annotation.SmallTest; 24 25 import java.io.File; 26 27 @SmallTest 28 public class AttachmentUtilitiesTests extends AndroidTestCase { 29 /** 30 * Test static inferMimeType() 31 * From the method doc: 32 * 33 * <pre> 34 * |---------------------------------------------------------| 35 * | E X T E N S I O N | 36 * |---------------------------------------------------------| 37 * | .eml | known(.png) | unknown(.abc) | none | 38 * | M |-----------------------------------------------------------------------| 39 * | I | none | msg/rfc822 | image/png | app/abc | app/oct-str | 40 * | M |-------------| (always | | | | 41 * | E | app/oct-str | overrides | | | | 42 * | T |-------------| | |-----------------------------| 43 * | Y | text/plain | | | text/plain | 44 * | P |-------------| |-------------------------------------------| 45 * | E | any/type | | any/type | 46 * |---|-----------------------------------------------------------------------| 47 * </pre> 48 * 49 * Also, all results should be in lowercase. 50 */ 51 public void testInferMimeType() { 52 final String DEFAULT_MIX = "Application/Octet-stream"; 53 final String DEFAULT_LOWER = DEFAULT_MIX.toLowerCase(); 54 final String TEXT_PLAIN = "text/plain"; 55 final String TYPE_IMG_PNG = "image/png"; 56 final String FILE_PNG = "myfile.false.pNg"; 57 final String FILE_ABC = "myfile.false.aBc"; 58 final String FILE_NO_EXT = "myfile"; 59 60 // .eml files always override mime type 61 assertEquals("message/rfc822", AttachmentUtilities.inferMimeType("a.eml", null)); 62 assertEquals("message/rfc822", AttachmentUtilities.inferMimeType("a.eml", "")); 63 assertEquals("message/rfc822", 64 AttachmentUtilities.inferMimeType("a.eml", DEFAULT_LOWER)); 65 assertEquals("message/rfc822", 66 AttachmentUtilities.inferMimeType("a.eMl", TEXT_PLAIN)); 67 assertEquals("message/rfc822", 68 AttachmentUtilities.inferMimeType("a.eml", TYPE_IMG_PNG)); 69 70 // Non-generic, non-empty mime type; return it 71 assertEquals("mime/type", AttachmentUtilities.inferMimeType(FILE_PNG, "Mime/TyPe")); 72 assertEquals("mime/type", AttachmentUtilities.inferMimeType(FILE_ABC, "Mime/TyPe")); 73 assertEquals("mime/type", 74 AttachmentUtilities.inferMimeType(FILE_NO_EXT, "Mime/TyPe")); 75 assertEquals("mime/type", AttachmentUtilities.inferMimeType(null, "Mime/TyPe")); 76 assertEquals("mime/type", AttachmentUtilities.inferMimeType("", "Mime/TyPe")); 77 78 // Recognizable file extension; return known type 79 assertEquals("image/png", AttachmentUtilities.inferMimeType(FILE_PNG, null)); 80 assertEquals("image/png", AttachmentUtilities.inferMimeType(FILE_PNG, "")); 81 assertEquals("image/png", AttachmentUtilities.inferMimeType(FILE_PNG, DEFAULT_MIX)); 82 assertEquals("image/png", AttachmentUtilities.inferMimeType(FILE_PNG, TEXT_PLAIN)); 83 84 // Unrecognized and non-empty file extension, non-"text/plain" type; generate mime type 85 assertEquals("application/abc", AttachmentUtilities.inferMimeType(FILE_ABC, null)); 86 assertEquals("application/abc", AttachmentUtilities.inferMimeType(FILE_ABC, "")); 87 assertEquals("application/abc", 88 AttachmentUtilities.inferMimeType(FILE_ABC, DEFAULT_MIX)); 89 90 // Unrecognized and empty file extension, non-"text/plain" type; return "app/octet-stream" 91 assertEquals(DEFAULT_LOWER, AttachmentUtilities.inferMimeType(FILE_NO_EXT, null)); 92 assertEquals(DEFAULT_LOWER, AttachmentUtilities.inferMimeType(FILE_NO_EXT, "")); 93 assertEquals(DEFAULT_LOWER, 94 AttachmentUtilities.inferMimeType(FILE_NO_EXT, DEFAULT_MIX)); 95 assertEquals(DEFAULT_LOWER, AttachmentUtilities.inferMimeType(null, null)); 96 assertEquals(DEFAULT_LOWER, AttachmentUtilities.inferMimeType("", "")); 97 98 // Unrecognized or empty file extension, "text/plain" type; return "text/plain" 99 assertEquals(TEXT_PLAIN, AttachmentUtilities.inferMimeType(FILE_ABC, TEXT_PLAIN)); 100 assertEquals(TEXT_PLAIN, 101 AttachmentUtilities.inferMimeType(FILE_NO_EXT, TEXT_PLAIN)); 102 assertEquals(TEXT_PLAIN, AttachmentUtilities.inferMimeType(null, TEXT_PLAIN)); 103 assertEquals(TEXT_PLAIN, AttachmentUtilities.inferMimeType("", TEXT_PLAIN)); 104 } 105 106 /** 107 * Text extension extractor 108 */ 109 public void testGetFilenameExtension() { 110 final String FILE_NO_EXTENSION = "myfile"; 111 final String FILE_EXTENSION = "myfile.pDf"; 112 final String FILE_TWO_EXTENSIONS = "myfile.false.AbC"; 113 114 assertNull(AttachmentUtilities.getFilenameExtension(null)); 115 assertNull(AttachmentUtilities.getFilenameExtension("")); 116 assertNull(AttachmentUtilities.getFilenameExtension(FILE_NO_EXTENSION)); 117 118 assertEquals("pdf", AttachmentUtilities.getFilenameExtension(FILE_EXTENSION)); 119 assertEquals("abc", AttachmentUtilities.getFilenameExtension(FILE_TWO_EXTENSIONS)); 120 121 // The API makes no claim as to how these are handled (it probably should), 122 // but make sure that they don't crash. 123 AttachmentUtilities.getFilenameExtension("filename."); 124 AttachmentUtilities.getFilenameExtension(".extension"); 125 } 126 } 127
