/* * Copyright (C) 2011 The Android Open Source Project * * 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 com.android.emailcommon.utility; import com.android.emailcommon.provider.EmailContent; import android.net.Uri; import android.test.AndroidTestCase; import android.test.suitebuilder.annotation.SmallTest; import java.io.File; @SmallTest public class AttachmentUtilitiesTests extends AndroidTestCase { /** * Test static inferMimeType() * From the method doc: * *
     *                   |---------------------------------------------------------|
     *                   |                  E X T E N S I O N                      |
     *                   |---------------------------------------------------------|
     *                   | .eml        | known(.png) | unknown(.abc) | none        |
     * | M |-----------------------------------------------------------------------|
     * | I | none        | msg/rfc822  | image/png   | app/abc       | app/oct-str |
     * | M |-------------| (always     |             |               |             |
     * | E | app/oct-str |  overrides  |             |               |             |
     * | T |-------------|             |             |-----------------------------|
     * | Y | text/plain  |             |             | text/plain                  |
     * | P |-------------|             |-------------------------------------------|
     * | E | any/type    |             | any/type                                  |
     * |---|-----------------------------------------------------------------------|
     * 
* * Also, all results should be in lowercase. */ public void testInferMimeType() { final String DEFAULT_MIX = "Application/Octet-stream"; final String DEFAULT_LOWER = DEFAULT_MIX.toLowerCase(); final String TEXT_PLAIN = "text/plain"; final String TYPE_IMG_PNG = "image/png"; final String FILE_PNG = "myfile.false.pNg"; final String FILE_ABC = "myfile.false.aBc"; final String FILE_NO_EXT = "myfile"; // .eml files always override mime type assertEquals("message/rfc822", AttachmentUtilities.inferMimeType("a.eml", null)); assertEquals("message/rfc822", AttachmentUtilities.inferMimeType("a.eml", "")); assertEquals("message/rfc822", AttachmentUtilities.inferMimeType("a.eml", DEFAULT_LOWER)); assertEquals("message/rfc822", AttachmentUtilities.inferMimeType("a.eMl", TEXT_PLAIN)); assertEquals("message/rfc822", AttachmentUtilities.inferMimeType("a.eml", TYPE_IMG_PNG)); // Non-generic, non-empty mime type; return it assertEquals("mime/type", AttachmentUtilities.inferMimeType(FILE_PNG, "Mime/TyPe")); assertEquals("mime/type", AttachmentUtilities.inferMimeType(FILE_ABC, "Mime/TyPe")); assertEquals("mime/type", AttachmentUtilities.inferMimeType(FILE_NO_EXT, "Mime/TyPe")); assertEquals("mime/type", AttachmentUtilities.inferMimeType(null, "Mime/TyPe")); assertEquals("mime/type", AttachmentUtilities.inferMimeType("", "Mime/TyPe")); // Recognizable file extension; return known type assertEquals("image/png", AttachmentUtilities.inferMimeType(FILE_PNG, null)); assertEquals("image/png", AttachmentUtilities.inferMimeType(FILE_PNG, "")); assertEquals("image/png", AttachmentUtilities.inferMimeType(FILE_PNG, DEFAULT_MIX)); assertEquals("image/png", AttachmentUtilities.inferMimeType(FILE_PNG, TEXT_PLAIN)); // Unrecognized and non-empty file extension, non-"text/plain" type; generate mime type assertEquals("application/abc", AttachmentUtilities.inferMimeType(FILE_ABC, null)); assertEquals("application/abc", AttachmentUtilities.inferMimeType(FILE_ABC, "")); assertEquals("application/abc", AttachmentUtilities.inferMimeType(FILE_ABC, DEFAULT_MIX)); // Unrecognized and empty file extension, non-"text/plain" type; return "app/octet-stream" assertEquals(DEFAULT_LOWER, AttachmentUtilities.inferMimeType(FILE_NO_EXT, null)); assertEquals(DEFAULT_LOWER, AttachmentUtilities.inferMimeType(FILE_NO_EXT, "")); assertEquals(DEFAULT_LOWER, AttachmentUtilities.inferMimeType(FILE_NO_EXT, DEFAULT_MIX)); assertEquals(DEFAULT_LOWER, AttachmentUtilities.inferMimeType(null, null)); assertEquals(DEFAULT_LOWER, AttachmentUtilities.inferMimeType("", "")); // Unrecognized or empty file extension, "text/plain" type; return "text/plain" assertEquals(TEXT_PLAIN, AttachmentUtilities.inferMimeType(FILE_ABC, TEXT_PLAIN)); assertEquals(TEXT_PLAIN, AttachmentUtilities.inferMimeType(FILE_NO_EXT, TEXT_PLAIN)); assertEquals(TEXT_PLAIN, AttachmentUtilities.inferMimeType(null, TEXT_PLAIN)); assertEquals(TEXT_PLAIN, AttachmentUtilities.inferMimeType("", TEXT_PLAIN)); } /** * Text extension extractor */ public void testGetFilenameExtension() { final String FILE_NO_EXTENSION = "myfile"; final String FILE_EXTENSION = "myfile.pDf"; final String FILE_TWO_EXTENSIONS = "myfile.false.AbC"; assertNull(AttachmentUtilities.getFilenameExtension(null)); assertNull(AttachmentUtilities.getFilenameExtension("")); assertNull(AttachmentUtilities.getFilenameExtension(FILE_NO_EXTENSION)); assertEquals("pdf", AttachmentUtilities.getFilenameExtension(FILE_EXTENSION)); assertEquals("abc", AttachmentUtilities.getFilenameExtension(FILE_TWO_EXTENSIONS)); // The API makes no claim as to how these are handled (it probably should), // but make sure that they don't crash. AttachmentUtilities.getFilenameExtension("filename."); AttachmentUtilities.getFilenameExtension(".extension"); } }