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authorGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
committerGravatar Piotr Russ <mail@pruss.it> 2020-11-16 00:10:28 +0100
commite06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch)
tree55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/buffer/test/node/test-buffer-compare-offset.js
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Diffstat (limited to 'node_modules/buffer/test/node/test-buffer-compare-offset.js')
-rw-r--r--node_modules/buffer/test/node/test-buffer-compare-offset.js66
1 files changed, 66 insertions, 0 deletions
diff --git a/node_modules/buffer/test/node/test-buffer-compare-offset.js b/node_modules/buffer/test/node/test-buffer-compare-offset.js
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+++ b/node_modules/buffer/test/node/test-buffer-compare-offset.js
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+'use strict';
+var Buffer = require('../../').Buffer;
+
+
+
+var assert = require('assert');
+
+var a = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8, 9, 0]);
+var b = Buffer.from([5, 6, 7, 8, 9, 0, 1, 2, 3, 4]);
+
+assert.equal(-1, a.compare(b));
+
+// Equivalent to a.compare(b).
+assert.equal(-1, a.compare(b, 0));
+assert.equal(-1, a.compare(b, '0'));
+
+// Equivalent to a.compare(b).
+assert.equal(-1, a.compare(b, 0, undefined, 0));
+
+// Zero-length targer, return 1
+assert.equal(1, a.compare(b, 0, 0, 0));
+assert.equal(1, a.compare(b, '0', '0', '0'));
+
+// Equivalent to Buffer.compare(a, b.slice(6, 10))
+assert.equal(1, a.compare(b, 6, 10));
+
+// Zero-length source, return -1
+assert.equal(-1, a.compare(b, 6, 10, 0, 0));
+
+// Equivalent to Buffer.compare(a.slice(4), b.slice(0, 5))
+assert.equal(1, a.compare(b, 0, 5, 4));
+
+// Equivalent to Buffer.compare(a.slice(1), b.slice(5))
+assert.equal(1, a.compare(b, 5, undefined, 1));
+
+// Equivalent to Buffer.compare(a.slice(2), b.slice(2, 4))
+assert.equal(-1, a.compare(b, 2, 4, 2));
+
+// Equivalent to Buffer.compare(a.slice(4), b.slice(0, 7))
+assert.equal(-1, a.compare(b, 0, 7, 4));
+
+// Equivalent to Buffer.compare(a.slice(4, 6), b.slice(0, 7));
+assert.equal(-1, a.compare(b, 0, 7, 4, 6));
+
+// zero length target
+assert.equal(1, a.compare(b, 0, null));
+
+// coerces to targetEnd == 5
+assert.equal(-1, a.compare(b, 0, {valueOf: () => 5}));
+
+// zero length target
+assert.equal(1, a.compare(b, Infinity, -Infinity));
+
+// zero length target because default for targetEnd <= targetSource
+assert.equal(1, a.compare(b, '0xff'));
+
+var oor = /out of range index/;
+
+assert.throws(() => a.compare(b, 0, 100, 0), oor);
+assert.throws(() => a.compare(b, 0, 1, 0, 100), oor);
+assert.throws(() => a.compare(b, -1), oor);
+assert.throws(() => a.compare(b, 0, '0xff'), oor);
+assert.throws(() => a.compare(b, 0, Infinity), oor);
+assert.throws(() => a.compare(b, -Infinity, Infinity), oor);
+assert.throws(() => a.compare(), /Argument must be a Buffer/);
+