| /* |
| * 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 java.io.File; |
| |
| public class AttachmentUtilitiesTests extends AndroidTestCase { |
| /** |
| * Test static inferMimeType() |
| * From the method doc: |
| * |
| * <pre> |
| * |---------------------------------------------------------| |
| * | 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 | |
| * |---|-----------------------------------------------------------------------| |
| * </pre> |
| * |
| * 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"); |
| } |
| } |