1 /* Copyright (C) 2010 The Android Open Source Project 2 * 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 package com.android.exchange.utility; 17 18 import com.android.email.Utility; 19 20 import junit.framework.TestCase; 21 22 /** 23 * Test for {@link SimpleIcsWriter}. 24 * You can run this entire test case with: 25 * runtest -c com.android.exchange.utility.SimpleIcsWriterTests email 26 */ 27 public class SimpleIcsWriterTests extends TestCase { 28 private static final String CRLF = "\r\n"; 29 private static final String UTF8_1_BYTE = "a"; 30 private static final String UTF8_2_BYTES = "\u00A2"; 31 private static final String UTF8_3_BYTES = "\u20AC"; 32 private static final String UTF8_4_BYTES = "\uD852\uDF62"; 33 34 /** 35 * Test for {@link SimpleIcsWriter#writeTag}. It also covers {@link SimpleIcsWriter#getBytes()} 36 * and {@link SimpleIcsWriter#escapeTextValue}. 37 */ testWriteTag()38 public void testWriteTag() { 39 final SimpleIcsWriter ics = new SimpleIcsWriter(); 40 ics.writeTag("TAG1", null); 41 ics.writeTag("TAG2", ""); 42 ics.writeTag("TAG3", "xyz"); 43 ics.writeTag("SUMMARY", "TEST-TEST,;\r\n\\TEST"); 44 ics.writeTag("SUMMARY2", "TEST-TEST,;\r\n\\TEST"); 45 final String actual = Utility.fromUtf8(ics.getBytes()); 46 47 assertEquals( 48 "TAG3:xyz" + CRLF + 49 "SUMMARY:TEST-TEST\\,\\;\\n\\\\TEST" + CRLF + // escaped 50 "SUMMARY2:TEST-TEST,;\r\n\\TEST" + CRLF // not escaped 51 , actual); 52 } 53 54 /** 55 * Verify that: We're folding lines correctly, and we're not splitting up a UTF-8 character. 56 */ testWriteLine()57 public void testWriteLine() { 58 for (String last : new String[] {UTF8_1_BYTE, UTF8_2_BYTES, UTF8_3_BYTES, UTF8_4_BYTES}) { 59 for (int i = 70; i < 160; i++) { 60 String input = stringOfLength(i) + last; 61 checkWriteLine(input); 62 } 63 } 64 } 65 66 /** 67 * @return a String of {@code length} bytes in UTF-8. 68 */ stringOfLength(int length)69 private static String stringOfLength(int length) { 70 StringBuilder sb = new StringBuilder(); 71 for (int i = 0; i < length; i++) { 72 sb.append('0' +(i % 10)); 73 } 74 return sb.toString(); 75 } 76 checkWriteLine(String input)77 private void checkWriteLine(String input) { 78 final SimpleIcsWriter ics = new SimpleIcsWriter(); 79 ics.writeLine(input); 80 final byte[] bytes = ics.getBytes(); 81 82 // Verify that no lines are longer than 75 bytes. 83 int numBytes = 0; 84 for (byte b : bytes) { 85 if (b == '\r') { 86 continue; // ignore 87 } 88 if (b == '\n') { 89 assertTrue("input=" + input, numBytes <= 75); 90 numBytes = 0; 91 continue; 92 } 93 numBytes++; 94 } 95 assertTrue("input=" + input, numBytes <= 75); 96 97 // If we're splitting up a UTF-8 character, fromUtf8() won't restore it correctly. 98 // If it becomes the same as input, we're doing the right thing. 99 final String actual = Utility.fromUtf8(bytes); 100 final String unfolded = actual.replace("\r\n\t", ""); 101 assertEquals("input=" + input, input + "\r\n", unfolded); 102 } 103 testQuoteParamValue()104 public void testQuoteParamValue() { 105 assertNull(SimpleIcsWriter.quoteParamValue(null)); 106 assertEquals("\"\"", SimpleIcsWriter.quoteParamValue("")); 107 assertEquals("\"a\"", SimpleIcsWriter.quoteParamValue("a")); 108 assertEquals("\"''\"", SimpleIcsWriter.quoteParamValue("\"'")); 109 assertEquals("\"abc\"", SimpleIcsWriter.quoteParamValue("abc")); 110 assertEquals("\"a'b'c\"", SimpleIcsWriter.quoteParamValue("a\"b\"c")); 111 } 112 } 113