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[FIX] cap IOU Amounts to their max and min value

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respect rippled's limits
This commit is contained in:
Geert Weening
2014-11-05 16:02:14 -08:00
parent 76cfb69d9f
commit f05941fbc4
2 changed files with 118 additions and 6 deletions
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76
test/amount-test.js
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@@ -1162,4 +1162,80 @@ describe('Amount', function() {
assert.strictEqual(demAmount.to_human_full(), '10.75853086191915/XAU (-0.5%pa)/rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh');
});
});
describe('amount limits', function() {
it ('max JSON wire limite', function() {
assert.strictEqual(Amount.bi_xns_max.toString(), '9000000000000000000');
});
it ('max JSON wire limite', function() {
assert.strictEqual(Amount.bi_xns_min.toString(), '-9000000000000000000');
});
it('max mantissa value', function() {
assert.strictEqual(Amount.bi_man_max_value.toString(), '9999999999999999');
});
it('min mantissa value', function() {
assert.strictEqual(Amount.bi_man_min_value.toString(), '1000000000000000');
});
it ('from_json minimum XRP', function() {
console.log('max', Amount.bi_xns_max.toString());
var amt = Amount.from_json('-9000000000000000000');
assert.strictEqual(amt.to_json(), '-9000000000000000000');
});
it ('from_json maximum XRP', function() {
var amt = Amount.from_json('-9000000000000000000');
assert.strictEqual(amt.to_json(), '-9000000000000000000');
});
it ('from_json less than minimum XRP', function() {
var amt = Amount.from_json('-9000000000000000001');
assert.strictEqual(amt.to_json(), '0');
});
it ('from_json more than maximum XRP', function() {
var amt = Amount.from_json('9000000000000000001');
assert.strictEqual(amt.to_json(), '0');
});
it ('from_json minimum IOU', function() {
var amt = Amount.from_json('-1e-81/USD/rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh');
assert.strictEqual(amt._value.toString(), Amount.bi_man_min_value.toString());
assert.strictEqual(amt.to_text(), '-1000000000000000e-96');
assert.strictEqual(amt.to_text(), Amount.min_value);
});
it('from_json exceed minimum IOU', function() {
assert.throws(function() {
Amount.from_json('-1e-82/USD/rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh')
}, 'Exceeding min value of ' + Amount.min_value);
});
it ('from_json maximum IOU', function() {
var amt = Amount.from_json('9999999999999999e80/USD/rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh');
assert.strictEqual(amt._value.toString(), Amount.bi_man_max_value.toString());
assert.strictEqual(amt.to_text(), '9999999999999999e80');
});
it ('from_json exceed maximum IOU', function() {
assert.throws(function() {
Amount.from_json('9999999999999999e81/USD/rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh')
}, 'Exceeding max value of ' + Amount.max_value);
});
it ('from_json normalize mantissa to valid max range, lost significant digits', function() {
var amt = Amount.from_json('99999999999999999999999999999999/USD/rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh');
assert.strictEqual(amt._value.toString(), Amount.bi_man_max_value.toString());
assert.strictEqual(amt.to_text(), '9999999999999999e16');
});
it ('from_json normalize mantissa to min valid range, lost significant digits', function() {
var amt = Amount.from_json('-0.0000000000000000000000001/USD/rHb9CJAWyB4rj91VRWn96DkukG4bwdtyTh');
assert.strictEqual(amt._value.toString(), Amount.bi_man_min_value.toString());
assert.strictEqual(amt.to_text(), '-1000000000000000e-40');
});
});
});