/*
* 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));
}
public void testInferMimeTypeForUri() {
String type;
// Test for content URI
type = AttachmentUtilities.inferMimeTypeForUri(getContext(), EmailContent.Body.CONTENT_URI);
assertEquals("vnd.android.cursor.dir/email-body", type);
// Test for file URI
type = AttachmentUtilities.inferMimeTypeForUri(getContext(),
Uri.fromFile(new File("a.png")));
assertEquals("image/png", type);
type = AttachmentUtilities.inferMimeTypeForUri(getContext(),
Uri.fromFile(new File("/a/b/c/d.png")));
assertEquals("image/png", type);
}
/**
* 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");
}
}