packager

app/node_modules/cuint/test/UINT64_multiply-test.js

@@ -0,0 +1,75 @@
+var assert = require('assert')
+var UINT64 = require('..').UINT64
+
+describe('multiply method', function () {
+
+  describe('0*0', function () {
+
+    it('should return 0', function (done) {
+      var u = UINT64(0).multiply( UINT64(0) )
+
+      assert.equal( u.toNumber(), 0 )
+      done()
+    })
+
+  })
+
+  describe('1*0', function () {
+
+    it('should return 0', function (done) {
+      var u = UINT64(1).multiply( UINT64(0) )
+
+      assert.equal( u.toNumber(), 0 )
+      done()
+    })
+
+  })
+
+  describe('0*1', function () {
+
+    it('should return 0', function (done) {
+      var u = UINT64(0).multiply( UINT64(1) )
+
+      assert.equal( u.toNumber(), 0 )
+      done()
+    })
+
+  })
+
+  describe('low bit*high bit', function () {
+
+    it('should return n', function (done) {
+      var n = Math.pow(2, 17)
+      var u = UINT64(3).multiply( UINT64(n) )
+
+      assert.equal( u.toNumber(), 3*n )
+      done()
+    })
+
+  })
+
+  describe('high bit*low bit', function () {
+
+    it('should return n', function (done) {
+      var n = Math.pow(2, 17)
+      var u = UINT64(n).multiply( UINT64(3) )
+
+      assert.equal( u.toNumber(), 3*n )
+      done()
+    })
+
+  })
+
+  describe('high bit*high bit', function () {
+
+    it('should return n', function (done) {
+      var n = 'FFFFFFFF'
+      var u = UINT64(n, 16).multiply( UINT64(n, 16) )
+
+      assert.equal( u.toNumber(), 1 )
+      done()
+    })
+
+  })
+
+})