| <!DOCTYPE html> |
| <title>Encoding API: Basics</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| |
| test(function() { |
| assert_equals((new TextEncoder).encoding, 'utf-8', 'default encoding is utf-8'); |
| assert_equals((new TextDecoder).encoding, 'utf-8', 'default encoding is utf-8'); |
| }, 'Default encodings'); |
| |
| test(function() { |
| assert_array_equals(new TextEncoder().encode(), [], 'input default should be empty string') |
| assert_array_equals(new TextEncoder().encode(undefined), [], 'input default should be empty string') |
| }, 'Default inputs'); |
| |
| |
| function testDecodeSample(encoding, string, bytes) { |
| test(function() { |
| assert_equals(new TextDecoder(encoding).decode(new Uint8Array(bytes)), string); |
| assert_equals(new TextDecoder(encoding).decode(new Uint8Array(bytes).buffer), string); |
| }, 'Decode sample: ' + encoding); |
| } |
| |
| // z (ASCII U+007A), cent (Latin-1 U+00A2), CJK water (BMP U+6C34), |
| // G-Clef (non-BMP U+1D11E), PUA (BMP U+F8FF), PUA (non-BMP U+10FFFD) |
| // byte-swapped BOM (non-character U+FFFE) |
| var sample = 'z\xA2\u6C34\uD834\uDD1E\uF8FF\uDBFF\uDFFD\uFFFE'; |
| |
| test(function() { |
| var encoding = 'utf-8'; |
| var string = sample; |
| var bytes = [0x7A, 0xC2, 0xA2, 0xE6, 0xB0, 0xB4, 0xF0, 0x9D, 0x84, 0x9E, 0xEF, 0xA3, 0xBF, 0xF4, 0x8F, 0xBF, 0xBD, 0xEF, 0xBF, 0xBE]; |
| var encoded = new TextEncoder().encode(string); |
| assert_array_equals([].slice.call(encoded), bytes); |
| assert_equals(new TextDecoder(encoding).decode(new Uint8Array(bytes)), string); |
| assert_equals(new TextDecoder(encoding).decode(new Uint8Array(bytes).buffer), string); |
| }, 'Encode/decode round trip: utf-8'); |
| |
| testDecodeSample( |
| 'utf-16le', |
| sample, |
| [0x7A, 0x00, 0xA2, 0x00, 0x34, 0x6C, 0x34, 0xD8, 0x1E, 0xDD, 0xFF, 0xF8, 0xFF, 0xDB, 0xFD, 0xDF, 0xFE, 0xFF] |
| ); |
| |
| testDecodeSample( |
| 'utf-16be', |
| sample, |
| [0x00, 0x7A, 0x00, 0xA2, 0x6C, 0x34, 0xD8, 0x34, 0xDD, 0x1E, 0xF8, 0xFF, 0xDB, 0xFF, 0xDF, 0xFD, 0xFF, 0xFE] |
| ); |
| |
| testDecodeSample( |
| 'utf-16', |
| sample, |
| [0x7A, 0x00, 0xA2, 0x00, 0x34, 0x6C, 0x34, 0xD8, 0x1E, 0xDD, 0xFF, 0xF8, 0xFF, 0xDB, 0xFD, 0xDF, 0xFE, 0xFF] |
| ); |
| |
| </script> |
