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Diffstat (limited to 'src/lib/util/tests/strutil_unittest.cc')
| -rw-r--r-- | src/lib/util/tests/strutil_unittest.cc | 642 |
1 files changed, 642 insertions, 0 deletions
diff --git a/src/lib/util/tests/strutil_unittest.cc b/src/lib/util/tests/strutil_unittest.cc new file mode 100644 index 0000000..912b40f --- /dev/null +++ b/src/lib/util/tests/strutil_unittest.cc @@ -0,0 +1,642 @@ +// Copyright (C) 2011-2022 Internet Systems Consortium, Inc. ("ISC") +// +// This Source Code Form is subject to the terms of the Mozilla Public +// License, v. 2.0. If a copy of the MPL was not distributed with this +// file, You can obtain one at http://mozilla.org/MPL/2.0/. + +#include <config.h> + +#include <exceptions/exceptions.h> +#include <util/strutil.h> +#include <util/encode/hex.h> + +#include <gtest/gtest.h> + +#include <stdint.h> +#include <string> + +using namespace isc; +using namespace isc::util; +using namespace isc::util::str; +using namespace std; + +namespace { + +// Check for slash replacement + +TEST(StringUtilTest, Slash) { + + string instring = ""; + isc::util::str::normalizeSlash(instring); + EXPECT_EQ("", instring); + + instring = "C:\\A\\B\\C.D"; + isc::util::str::normalizeSlash(instring); + EXPECT_EQ("C:/A/B/C.D", instring); + + instring = "// \\ //"; + isc::util::str::normalizeSlash(instring); + EXPECT_EQ("// / //", instring); +} + +// Check that leading and trailing space trimming works + +TEST(StringUtilTest, Trim) { + + // Empty and full string. + EXPECT_EQ("", isc::util::str::trim("")); + EXPECT_EQ("abcxyz", isc::util::str::trim("abcxyz")); + + // Trim right-most blanks + EXPECT_EQ("ABC", isc::util::str::trim("ABC ")); + EXPECT_EQ("ABC", isc::util::str::trim("ABC\t\t \n\t")); + + // Left-most blank trimming + EXPECT_EQ("XYZ", isc::util::str::trim(" XYZ")); + EXPECT_EQ("XYZ", isc::util::str::trim("\t\t \tXYZ")); + + // Right and left, with embedded spaces + EXPECT_EQ("MN \t OP", isc::util::str::trim("\t\tMN \t OP \t")); +} + +// Check tokenization. Note that ASSERT_EQ is used to check the size of the +// returned vector; if not as expected, the following references may be invalid +// so should not be used. + +TEST(StringUtilTest, Tokens) { + vector<string> result; + + // Default delimiters + + // Degenerate cases + result = isc::util::str::tokens(""); // Empty string + EXPECT_EQ(0, result.size()); + + result = isc::util::str::tokens(" \n "); // String is all delimiters + EXPECT_EQ(0, result.size()); + + result = isc::util::str::tokens("abc"); // String has no delimiters + ASSERT_EQ(1, result.size()); + EXPECT_EQ(string("abc"), result[0]); + + // String containing leading and/or trailing delimiters, no embedded ones. + result = isc::util::str::tokens("\txyz"); // One leading delimiter + ASSERT_EQ(1, result.size()); + EXPECT_EQ(string("xyz"), result[0]); + + result = isc::util::str::tokens("\t \nxyz"); // Multiple leading delimiters + ASSERT_EQ(1, result.size()); + EXPECT_EQ(string("xyz"), result[0]); + + result = isc::util::str::tokens("xyz\n"); // One trailing delimiter + ASSERT_EQ(1, result.size()); + EXPECT_EQ(string("xyz"), result[0]); + + result = isc::util::str::tokens("xyz \t"); // Multiple trailing + ASSERT_EQ(1, result.size()); + EXPECT_EQ(string("xyz"), result[0]); + + result = isc::util::str::tokens("\t xyz \n"); // Leading and trailing + ASSERT_EQ(1, result.size()); + EXPECT_EQ(string("xyz"), result[0]); + + // Embedded delimiters + result = isc::util::str::tokens("abc\ndef"); // 2 tokens, one separator + ASSERT_EQ(2, result.size()); + EXPECT_EQ(string("abc"), result[0]); + EXPECT_EQ(string("def"), result[1]); + + result = isc::util::str::tokens("abc\t\t\ndef"); // 2 tokens, 3 separators + ASSERT_EQ(2, result.size()); + EXPECT_EQ(string("abc"), result[0]); + EXPECT_EQ(string("def"), result[1]); + + result = isc::util::str::tokens("abc\n \tdef\t\tghi"); + ASSERT_EQ(3, result.size()); // Multiple tokens, many delims + EXPECT_EQ(string("abc"), result[0]); + EXPECT_EQ(string("def"), result[1]); + EXPECT_EQ(string("ghi"), result[2]); + + // Embedded and non-embedded delimiters + + result = isc::util::str::tokens("\t\t \nabc\n \tdef\t\tghi \n\n"); + ASSERT_EQ(3, result.size()); // Multiple tokens, many delims + EXPECT_EQ(string("abc"), result[0]); + EXPECT_EQ(string("def"), result[1]); + EXPECT_EQ(string("ghi"), result[2]); + + // Non-default delimiter + result = isc::util::str::tokens("alpha/beta/ /gamma//delta/epsilon/", "/"); + ASSERT_EQ(6, result.size()); + EXPECT_EQ(string("alpha"), result[0]); + EXPECT_EQ(string("beta"), result[1]); + EXPECT_EQ(string(" "), result[2]); + EXPECT_EQ(string("gamma"), result[3]); + EXPECT_EQ(string("delta"), result[4]); + EXPECT_EQ(string("epsilon"), result[5]); + + // Non-default delimiters (plural) + result = isc::util::str::tokens("+*--alpha*beta+ -gamma**delta+epsilon-+**", + "*+-"); + ASSERT_EQ(6, result.size()); + EXPECT_EQ(string("alpha"), result[0]); + EXPECT_EQ(string("beta"), result[1]); + EXPECT_EQ(string(" "), result[2]); + EXPECT_EQ(string("gamma"), result[3]); + EXPECT_EQ(string("delta"), result[4]); + EXPECT_EQ(string("epsilon"), result[5]); + + // Escaped delimiter + result = isc::util::str::tokens("foo\\,bar", ",", true); + EXPECT_EQ(1, result.size()); + EXPECT_EQ(string("foo,bar"), result[0]); + + // Escaped escape + result = isc::util::str::tokens("foo\\\\,bar", ",", true); + ASSERT_EQ(2, result.size()); + EXPECT_EQ(string("foo\\"), result[0]); + EXPECT_EQ(string("bar"), result[1]); + + // Double escapes + result = isc::util::str::tokens("foo\\\\\\\\,\\bar", ",", true); + ASSERT_EQ(2, result.size()); + EXPECT_EQ(string("foo\\\\"), result[0]); + EXPECT_EQ(string("\\bar"), result[1]); + + // Escaped standard character + result = isc::util::str::tokens("fo\\o,bar", ",", true); + ASSERT_EQ(2, result.size()); + EXPECT_EQ(string("fo\\o"), result[0]); + EXPECT_EQ(string("bar"), result[1]); + + // Escape at the end + result = isc::util::str::tokens("foo,bar\\", ",", true); + ASSERT_EQ(2, result.size()); + EXPECT_EQ(string("foo"), result[0]); + EXPECT_EQ(string("bar\\"), result[1]); + + // Escape opening a token + result = isc::util::str::tokens("foo,\\,,bar", ",", true); + ASSERT_EQ(3, result.size()); + EXPECT_EQ(string("foo"), result[0]); + EXPECT_EQ(string(","), result[1]); + EXPECT_EQ(string("bar"), result[2]); +} + +// Changing case + +TEST(StringUtilTest, ChangeCase) { + string mixed("abcDEFghiJKLmno123[]{=+--+]}"); + string upper("ABCDEFGHIJKLMNO123[]{=+--+]}"); + string lower("abcdefghijklmno123[]{=+--+]}"); + + string test = mixed; + isc::util::str::lowercase(test); + EXPECT_EQ(lower, test); + + test = mixed; + isc::util::str::uppercase(test); + EXPECT_EQ(upper, test); +} + +// Formatting + +TEST(StringUtilTest, Formatting) { + + vector<string> args; + args.push_back("arg1"); + args.push_back("arg2"); + args.push_back("arg3"); + + string format1 = "This is a string with no tokens"; + EXPECT_EQ(format1, isc::util::str::format(format1, args)); + + string format2 = ""; // Empty string + EXPECT_EQ(format2, isc::util::str::format(format2, args)); + + string format3 = " "; // Empty string + EXPECT_EQ(format3, isc::util::str::format(format3, args)); + + string format4 = "String with %d non-string tokens %lf"; + EXPECT_EQ(format4, isc::util::str::format(format4, args)); + + string format5 = "String with %s correct %s number of tokens %s"; + string result5 = "String with arg1 correct arg2 number of tokens arg3"; + EXPECT_EQ(result5, isc::util::str::format(format5, args)); + + string format6 = "String with %s too %s few tokens"; + string result6 = "String with arg1 too arg2 few tokens"; + EXPECT_EQ(result6, isc::util::str::format(format6, args)); + + string format7 = "String with %s too %s many %s tokens %s !"; + string result7 = "String with arg1 too arg2 many arg3 tokens %s !"; + EXPECT_EQ(result7, isc::util::str::format(format7, args)); + + string format8 = "String with embedded%s%s%stokens"; + string result8 = "String with embeddedarg1arg2arg3tokens"; + EXPECT_EQ(result8, isc::util::str::format(format8, args)); + + // Handle an empty vector + args.clear(); + string format9 = "%s %s"; + EXPECT_EQ(format9, isc::util::str::format(format9, args)); +} + +TEST(StringUtilTest, getToken) { + string s("a b c"); + istringstream ss(s); + EXPECT_EQ("a", isc::util::str::getToken(ss)); + EXPECT_EQ("b", isc::util::str::getToken(ss)); + EXPECT_EQ("c", isc::util::str::getToken(ss)); + EXPECT_THROW(isc::util::str::getToken(ss), isc::util::str::StringTokenError); +} + +int32_t tokenToNumCall_32_16(const string& token) { + return isc::util::str::tokenToNum<int32_t, 16>(token); +} + +int16_t tokenToNumCall_16_8(const string& token) { + return isc::util::str::tokenToNum<int16_t, 8>(token); +} + +TEST(StringUtilTest, tokenToNum) { + uint32_t num32 = tokenToNumCall_32_16("0"); + EXPECT_EQ(0, num32); + num32 = tokenToNumCall_32_16("123"); + EXPECT_EQ(123, num32); + num32 = tokenToNumCall_32_16("65535"); + EXPECT_EQ(65535, num32); + + EXPECT_THROW(tokenToNumCall_32_16(""), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_32_16("a"), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_32_16("-1"), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_32_16("65536"), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_32_16("1234567890"), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_32_16("-1234567890"), + isc::util::str::StringTokenError); + + uint16_t num16 = tokenToNumCall_16_8("123"); + EXPECT_EQ(123, num16); + num16 = tokenToNumCall_16_8("0"); + EXPECT_EQ(0, num16); + num16 = tokenToNumCall_16_8("255"); + EXPECT_EQ(255, num16); + + EXPECT_THROW(tokenToNumCall_16_8(""), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_16_8("a"), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_16_8("-1"), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_16_8("256"), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_16_8("1234567890"), + isc::util::str::StringTokenError); + EXPECT_THROW(tokenToNumCall_16_8("-1234567890"), + isc::util::str::StringTokenError); + +} + +/// @brief Convenience function which calls quotedStringToBinary +/// and converts returned vector back to string. +/// +/// @param s Input string. +/// @return String holding a copy of a vector returned by the +/// quotedStringToBinary. +std::string testQuoted(const std::string& s) { + std::vector<uint8_t> vec = str::quotedStringToBinary(s); + std::string s2(vec.begin(), vec.end()); + return (s2); +} + +TEST(StringUtilTest, quotedStringToBinary) { + // No opening or closing quote should result in empty string. + EXPECT_TRUE(str::quotedStringToBinary("'").empty()); + EXPECT_TRUE(str::quotedStringToBinary("").empty()); + EXPECT_TRUE(str::quotedStringToBinary(" ").empty()); + EXPECT_TRUE(str::quotedStringToBinary("'circuit id").empty()); + EXPECT_TRUE(str::quotedStringToBinary("circuit id'").empty()); + + // If there is only opening and closing quote, an empty + // vector should be returned. + EXPECT_TRUE(str::quotedStringToBinary("''").empty()); + + // Both opening and ending quote is present. + EXPECT_EQ("circuit id", testQuoted("'circuit id'")); + EXPECT_EQ("remote id", testQuoted(" ' remote id'")); + EXPECT_EQ("duid", testQuoted(" ' duid'")); + EXPECT_EQ("duid", testQuoted("'duid ' ")); + EXPECT_EQ("remote'id", testQuoted(" ' remote'id '")); + EXPECT_EQ("remote id'", testQuoted("'remote id''")); + EXPECT_EQ("'remote id", testQuoted("''remote id'")); + + // Multiple quotes. + EXPECT_EQ("'", testQuoted("'''")); + EXPECT_EQ("''", testQuoted("''''")); +} + +/// @brief Test that hex string with colons can be decoded. +/// +/// @param input Input string to be decoded. +/// @param reference A string without colons representing the +/// decoded data. +void testColonSeparated(const std::string& input, + const std::string& reference) { + // Create a reference vector. + std::vector<uint8_t> reference_vector; + ASSERT_NO_THROW(encode::decodeHex(reference, reference_vector)); + + // Fill the output vector with some garbage to make sure that + // the data is erased when a string is decoded successfully. + std::vector<uint8_t> decoded(1, 10); + ASSERT_NO_THROW(decodeColonSeparatedHexString(input, decoded)); + + // Get the string representation of the decoded data for logging + // purposes. + std::string encoded; + ASSERT_NO_THROW(encoded = encode::encodeHex(decoded)); + + // Check if the decoded data matches the reference. + EXPECT_TRUE(decoded == reference_vector) + << "decoded data don't match the reference, input='" + << input << "', reference='" << reference << "'" + ", decoded='" << encoded << "'"; +} + +TEST(StringUtilTest, decodeColonSeparatedHexString) { + // Test valid strings. + testColonSeparated("A1:02:C3:d4:e5:F6", "A102C3D4E5F6"); + testColonSeparated("A:02:3:d:E5:F6", "0A02030DE5F6"); + testColonSeparated("A:B:C:D", "0A0B0C0D"); + testColonSeparated("1", "01"); + testColonSeparated("1e", "1E"); + testColonSeparated("", ""); + + // Test invalid strings. + std::vector<uint8_t> decoded; + // Whitespaces. + EXPECT_THROW(decodeColonSeparatedHexString(" ", decoded), + isc::BadValue); + // Whitespace before digits. + EXPECT_THROW(decodeColonSeparatedHexString(" A1", decoded), + isc::BadValue); + // Two consecutive colons. + EXPECT_THROW(decodeColonSeparatedHexString("A::01", decoded), + isc::BadValue); + // Three consecutive colons. + EXPECT_THROW(decodeColonSeparatedHexString("A:::01", decoded), + isc::BadValue); + // Whitespace within a string. + EXPECT_THROW(decodeColonSeparatedHexString("A :01", decoded), + isc::BadValue); + // Terminating colon. + EXPECT_THROW(decodeColonSeparatedHexString("0A:01:", decoded), + isc::BadValue); + // Opening colon. + EXPECT_THROW(decodeColonSeparatedHexString(":0A:01", decoded), + isc::BadValue); + // Three digits before the colon. + EXPECT_THROW(decodeColonSeparatedHexString("0A1:B1", decoded), + isc::BadValue); +} + +void testFormatted(const std::string& input, + const std::string& reference) { + // Create a reference vector. + std::vector<uint8_t> reference_vector; + ASSERT_NO_THROW(encode::decodeHex(reference, reference_vector)); + + // Fill the output vector with some garbage to make sure that + // the data is erased when a string is decoded successfully. + std::vector<uint8_t> decoded(1, 10); + ASSERT_NO_THROW(decodeFormattedHexString(input, decoded)); + + // Get the string representation of the decoded data for logging + // purposes. + std::string encoded; + ASSERT_NO_THROW(encoded = encode::encodeHex(decoded)); + + // Check if the decoded data matches the reference. + EXPECT_TRUE(decoded == reference_vector) + << "decoded data don't match the reference, input='" + << input << "', reference='" << reference << "'" + ", decoded='" << encoded << "'"; +} + +TEST(StringUtilTest, decodeFormattedHexString) { + // Colon separated. + testFormatted("1:A7:B5:4:23", "01A7B50423"); + // Space separated. + testFormatted("1 A7 B5 4 23", "01A7B50423"); + // No colons, even number of digits. + testFormatted("17a534", "17A534"); + // Odd number of digits. + testFormatted("A3A6f78", "0A3A6F78"); + // '0x' prefix. + testFormatted("0xA3A6f78", "0A3A6F78"); + // '0x' prefix with a special value of 0. + testFormatted("0x0", "00"); + // Empty string. + testFormatted("", ""); + + std::vector<uint8_t> decoded; + // Dangling colon. + EXPECT_THROW(decodeFormattedHexString("0a:", decoded), + isc::BadValue); + // Dangling space. + EXPECT_THROW(decodeFormattedHexString("0a ", decoded), + isc::BadValue); + // '0x' prefix and spaces. + EXPECT_THROW(decodeFormattedHexString("0x01 02", decoded), + isc::BadValue); + // '0x' prefix and colons. + EXPECT_THROW(decodeFormattedHexString("0x01:02", decoded), + isc::BadValue); + // colon and spaces mixed + EXPECT_THROW(decodeFormattedHexString("01:02 03", decoded), + isc::BadValue); + // Missing colon. + EXPECT_THROW(decodeFormattedHexString("01:0203", decoded), + isc::BadValue); + // Missing space. + EXPECT_THROW(decodeFormattedHexString("01 0203", decoded), + isc::BadValue); + // Invalid prefix. + EXPECT_THROW(decodeFormattedHexString("x0102", decoded), + isc::BadValue); + // Invalid prefix again. + EXPECT_THROW(decodeFormattedHexString("1x0102", decoded), + isc::BadValue); +} + +/// @brief Function used to test StringSantitizer +/// @param original - string to sanitize +/// @param char_set - regular expression string describing invalid +/// characters +/// @param char_replacement - character(s) which replace invalid +/// characters +/// @param expected - expected sanitized string +void sanitizeStringTest( + const std::string& original, + const std::string& char_set, + const std::string& char_replacement, + const std::string& expected) { + + StringSanitizerPtr ss; + std::string sanitized; + + try { + ss.reset(new StringSanitizer(char_set, char_replacement)); + } catch (const std::exception& ex) { + ADD_FAILURE() << "Could not construct sanitizer:" << ex.what(); + return; + } + + try { + sanitized = ss->scrub(original); + } catch (const std::exception& ex) { + ADD_FAILURE() << "Could not scrub string:" << ex.what(); + return; + } + + EXPECT_EQ(sanitized, expected); +} + +// Verifies StringSantizer class +TEST(StringUtilTest, stringSanitizer) { + // Bad regular expression should throw. + StringSanitizerPtr ss; + ASSERT_THROW(ss.reset(new StringSanitizer("[bogus-regex","")), BadValue); + + std::string good_data(StringSanitizer::MAX_DATA_SIZE, '0'); + std::string bad_data(StringSanitizer::MAX_DATA_SIZE + 1, '0'); + + ASSERT_NO_THROW(ss.reset(new StringSanitizer(good_data, good_data))); + + ASSERT_THROW(ss.reset(new StringSanitizer(bad_data, "")), BadValue); + ASSERT_THROW(ss.reset(new StringSanitizer("", bad_data)), BadValue); + + // List of invalid chars should work: (b,c,2 are invalid) + sanitizeStringTest("abc.123", "[b-c2]", "*", + "a**.1*3"); + // Inverted list of valid chars should work: (b,c,2 are valid) + sanitizeStringTest("abc.123", "[^b-c2]", "*", + "*bc**2*"); + + // A string of all valid chars should return an identical string. + sanitizeStringTest("-_A--B__Cabc34567_-", "[^A-Ca-c3-7_-]", "x", + "-_A--B__Cabc34567_-"); + + // Replacing with a character should work. + sanitizeStringTest("A[b]c\12JoE3-_x!B$Y#e", "[^A-Za-z0-9_]", "*", + "A*b*c*JoE3*_x*B*Y*e"); + + // Removing (i.e.replacing with an "empty" string) should work. + sanitizeStringTest("A[b]c\12JoE3-_x!B$Y#e", "[^A-Za-z0-9_]", "", + "AbcJoE3_xBYe"); + + // More than one non-matching in a row should work. + sanitizeStringTest("%%A%%B%%C%%", "[^A-Za-z0-9_]", "x", + "xxAxxBxxCxx"); + + // Removing more than one non-matching in a row should work. + sanitizeStringTest("%%A%%B%%C%%", "[^A-Za-z0-9_]", "", + "ABC"); + + // Replacing with a string should work. + sanitizeStringTest("%%A%%B%%C%%", "[^A-Za-z0-9_]", "xyz", + "xyzxyzAxyzxyzBxyzxyzCxyzxyz"); + + // Dots as valid chars work. + sanitizeStringTest("abc.123", "[^A-Za-z0-9_.]", "*", + "abc.123"); + + std::string withNulls("\000ab\000c.12\0003",10); + sanitizeStringTest(withNulls, "[^A-Za-z0-9_.]", "*", + "*ab*c.12*3"); +} + +// Verifies templated buffer iterator seekTrimmed() function +TEST(StringUtilTest, seekTrimmed) { + + // Empty buffer should be fine. + std::vector<uint8_t> buffer; + auto begin = buffer.end(); + auto end = buffer.end(); + ASSERT_NO_THROW(end = seekTrimmed(begin, end, 0)); + EXPECT_EQ(0, std::distance(begin, end)); + + // Buffer of only trim values, should be fine. + buffer = { 1, 1 }; + begin = buffer.begin(); + end = buffer.end(); + ASSERT_NO_THROW(end = seekTrimmed(begin, end, 1)); + EXPECT_EQ(0, std::distance(begin, end)); + + // One trailing null should trim off. + buffer = {'o', 'n', 'e', 0 }; + begin = buffer.begin(); + end = buffer.end(); + ASSERT_NO_THROW(end = seekTrimmed(begin, end, 0)); + EXPECT_EQ(3, std::distance(begin, end)); + + // More than one trailing null should trim off. + buffer = { 't', 'h', 'r', 'e', 'e', 0, 0, 0 }; + begin = buffer.begin(); + end = buffer.end(); + ASSERT_NO_THROW(end = seekTrimmed(begin, end, 0)); + EXPECT_EQ(5, std::distance(begin, end)); + + // Embedded null should be left in place. + buffer = { 'e', 'm', 0, 'b', 'e', 'd' }; + begin = buffer.begin(); + end = buffer.end(); + ASSERT_NO_THROW(end = seekTrimmed(begin, end, 0)); + EXPECT_EQ(6, std::distance(begin, end)); + + // Leading null should be left in place. + buffer = { 0, 'l', 'e', 'a', 'd', 'i', 'n', 'g' }; + begin = buffer.begin(); + end = buffer.end(); + ASSERT_NO_THROW(end = seekTrimmed(begin, end, 0)); + EXPECT_EQ(8, std::distance(begin, end)); +} + +// Verifies isPrintable predicate on strings. +TEST(StringUtilTest, stringIsPrintable) { + string content; + + // Empty is printable. + EXPECT_TRUE(isPrintable(content)); + + // Check Abcd. + content = "Abcd"; + EXPECT_TRUE(isPrintable(content)); + + // Add a control character (not printable). + content += "\a"; + EXPECT_FALSE(isPrintable(content)); +} + +// Verifies isPrintable predicate on byte vectors. +TEST(StringUtilTest, vectorIsPrintable) { + vector<uint8_t> content; + + // Empty is printable. + EXPECT_TRUE(isPrintable(content)); + + // Check Abcd. + content = { 0x41, 0x62, 0x63, 0x64 }; + EXPECT_TRUE(isPrintable(content)); + + // Add a control character (not printable). + content.push_back('\a'); + EXPECT_FALSE(isPrintable(content)); +} + +} // end of anonymous namespace |