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author | 2020-11-16 00:10:28 +0100 | |
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committer | 2020-11-16 00:10:28 +0100 | |
commit | e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch) | |
tree | 55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/buffer/test/slice.js | |
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api, login, auth
Diffstat (limited to 'node_modules/buffer/test/slice.js')
-rw-r--r-- | node_modules/buffer/test/slice.js | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/node_modules/buffer/test/slice.js b/node_modules/buffer/test/slice.js new file mode 100644 index 0000000..25c111c --- /dev/null +++ b/node_modules/buffer/test/slice.js @@ -0,0 +1,37 @@ +if (process.env.OBJECT_IMPL) global.TYPED_ARRAY_SUPPORT = false +var B = require('../').Buffer +var test = require('tape') + +test('modifying buffer created by .slice() modifies original memory', function (t) { + if (!B.TYPED_ARRAY_SUPPORT) return t.end() + + var buf1 = new B(26) + for (var i = 0; i < 26; i++) { + buf1[i] = i + 97 // 97 is ASCII a + } + + var buf2 = buf1.slice(0, 3) + t.equal(buf2.toString('ascii', 0, buf2.length), 'abc') + + buf2[0] = '!'.charCodeAt(0) + t.equal(buf1.toString('ascii', 0, buf2.length), '!bc') + + t.end() +}) + +test('modifying parent buffer modifies .slice() buffer\'s memory', function (t) { + if (!B.TYPED_ARRAY_SUPPORT) return t.end() + + var buf1 = new B(26) + for (var i = 0; i < 26; i++) { + buf1[i] = i + 97 // 97 is ASCII a + } + + var buf2 = buf1.slice(0, 3) + t.equal(buf2.toString('ascii', 0, buf2.length), 'abc') + + buf1[0] = '!'.charCodeAt(0) + t.equal(buf2.toString('ascii', 0, buf2.length), '!bc') + + t.end() +}) |