Gen preview iceberg test

test/lib/iceberg/events/orders_order_fill.js

@@ -38,6 +38,10 @@ describe('iceberg:events:orders_order_fill', () => {
 
  onOrderFill({
  ...instance,
+ state: {
+ ...instance.state,
+ remainingAmount: 100
+ },
  h: {
  ...instance.h,
  emit: (eName, gid, orders, cancelDelay) => {

test/lib/iceberg/meta/gen_preview.js

@@ -0,0 +1,49 @@
+/* eslint-env mocha */
+'use strict'
+
+const assert = require('assert')
+const genPreview = require('../../../../lib/iceberg/meta/gen_preview')
+
+const getState = (argOverrides = {}) => {
+ return {
+ amount: 42,
+ sliceAmount: 10,
+ symbol: 'tBTCUSD',
+ price: 50000,
+ orderType: 'LIMIT',
+ ...argOverrides
+ }
+}
+
+describe('iceberg:meta:init_state', () => {
+ it('generates the sliced order a/c to given input', () => {
+ const o = genPreview(getState())
+ const [slicedOrder] = o
+
+ assert.deepStrictEqual(o.length, 1, 'no order created')
+ assert.deepStrictEqual(slicedOrder.amount, 10, 'invalid sliced amount')
+ assert.deepStrictEqual(slicedOrder.symbol, 'tBTCUSD', 'invalid order symbol')
+ assert.deepStrictEqual(slicedOrder.price, 50000, 'invalid order price')
+ })
+
+ it('generates the correct sliced order for float amounts', () => {
+ const o = genPreview(getState({
+ excessAsHidden: true,
+ amount: 0.3,
+ sliceAmount: 0.1
+ }))
+ const [excessOrder, slicedOrder] = o
+
+ assert.deepStrictEqual(excessOrder.amount, 0.2, 'invalid excess sliced amount')
+ assert.deepStrictEqual(slicedOrder.amount, 0.1, 'invalid sliced amount')
+ })
+
+ it('generates an extra hidden order for excess amount', () => {
+ const o = genPreview(getState({ excessAsHidden: true }))
+ const [excessOrder] = o
+
+ assert.deepStrictEqual(o.length, 2, 'did not create an order for excess amount')
+ assert.ok(excessOrder.hidden, 'did not create a hidden order for excess amount')
+ assert.deepStrictEqual(excessOrder.amount, 32, 'invalid excess amount')
+ })
+})