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/* Copyright (C) 2010 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.exchange.utility;
import com.android.email.TestUtils;
import junit.framework.TestCase;
/**
* Test for {@link SimpleIcsWriter}.
* You can run this entire test case with:
* runtest -c com.android.exchange.utility.SimpleIcsWriterTests email
*/
public class SimpleIcsWriterTests extends TestCase {
private static final String CRLF = "\r\n";
private static final String UTF8_1_BYTE = "a";
private static final String UTF8_2_BYTES = "\u00A2";
private static final String UTF8_3_BYTES = "\u20AC";
private static final String UTF8_4_BYTES = "\uD852\uDF62";
/**
* Test for {@link SimpleIcsWriter#writeTag}. It also covers {@link SimpleIcsWriter#getBytes()}
* and {@link SimpleIcsWriter#escapeTextValue}.
*/
public void testWriteTag() {
final SimpleIcsWriter ics = new SimpleIcsWriter();
ics.writeTag("TAG1", null);
ics.writeTag("TAG2", "");
ics.writeTag("TAG3", "xyz");
ics.writeTag("SUMMARY", "TEST-TEST,;\r\n\\TEST");
ics.writeTag("SUMMARY2", "TEST-TEST,;\r\n\\TEST");
final String actual = TestUtils.fromUtf8(ics.getBytes());
assertEquals(
"TAG1:0" + CRLF +
"TAG2:0" + CRLF +
"TAG3:xyz" + CRLF +
"SUMMARY:TEST-TEST\\,\\;\\n\\\\TEST" + CRLF + // escaped
"SUMMARY2:TEST-TEST,;\r\n\\TEST" + CRLF // not escaped
, actual);
}
/**
* Verify that: We're folding lines correctly, and we're not splitting up a UTF-8 character.
*/
public void testWriteLine() {
for (String last : new String[] {UTF8_1_BYTE, UTF8_2_BYTES, UTF8_3_BYTES, UTF8_4_BYTES}) {
for (int i = 70; i < 160; i++) {
String input = stringOfLength(i) + last;
checkWriteLine(input);
}
}
}
/**
* @return a String of {@code length} bytes in UTF-8.
*/
private static String stringOfLength(int length) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < length; i++) {
sb.append('0' +(i % 10));
}
return sb.toString();
}
private void checkWriteLine(String input) {
final SimpleIcsWriter ics = new SimpleIcsWriter();
ics.writeLine(input);
final byte[] bytes = ics.getBytes();
// Verify that no lines are longer than 75 bytes.
int numBytes = 0;
for (byte b : bytes) {
if (b == '\r') {
continue; // ignore
}
if (b == '\n') {
assertTrue("input=" + input, numBytes <= 75);
numBytes = 0;
continue;
}
numBytes++;
}
assertTrue("input=" + input, numBytes <= 75);
// If we're splitting up a UTF-8 character, fromUtf8() won't restore it correctly.
// If it becomes the same as input, we're doing the right thing.
final String actual = TestUtils.fromUtf8(bytes);
final String unfolded = actual.replace("\r\n\t", "");
assertEquals("input=" + input, input + "\r\n", unfolded);
}
public void testQuoteParamValue() {
assertNull(SimpleIcsWriter.quoteParamValue(null));
assertEquals("\"\"", SimpleIcsWriter.quoteParamValue(""));
assertEquals("\"a\"", SimpleIcsWriter.quoteParamValue("a"));
assertEquals("\"''\"", SimpleIcsWriter.quoteParamValue("\"'"));
assertEquals("\"abc\"", SimpleIcsWriter.quoteParamValue("abc"));
assertEquals("\"a'b'c\"", SimpleIcsWriter.quoteParamValue("a\"b\"c"));
}
}
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