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'use strict'
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// ----------------------------------------------------------------------------
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const log = require ('ololog')
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, ansi = require ('ansicolor').nice
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, chai = require ('chai')
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, ccxt = require ('../../../ccxt.js')
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, expect = chai.expect
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, assert = chai.assert
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/* ------------------------------------------------------------------------ */
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// will try to place a buy order at the minimum price level on minimum amount possible
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// will skip if balance is positive or market limits are not set
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module.exports = async (exchange, symbol, balance) => {
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if (!exchange.has.createOrder) {
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log ('createOrder not supported')
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return
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}
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const markets = await exchange.loadMarkets ()
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const market = markets[symbol]
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if (market.limits === undefined) {
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log ('market.limits property is not set, will not test order creation')
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return
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}
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const { price, amount, cost } = market.limits
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if (price === undefined || amount === undefined || cost === undefined) {
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log ('market.limits.[price|amount|cost] property is not set, will not test order creation')
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return
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}
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let minPrice = price.min
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let minAmount = amount.min // will be adjusted co cover minCost if needed
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const minCost = cost.min
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if (minPrice === undefined || minAmount === undefined || minCost === undefined) {
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log ('min limits are not set, will not test order creation')
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return
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}
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if (minCost > minPrice * minAmount) {
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minAmount = minCost / minPrice
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}
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minPrice = exchange.priceToPrecision (symbol, minPrice)
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minAmount = exchange.amountToPrecision (symbol, minAmount)
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if (balance === undefined) {
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log ('balance is not set, cannot ensure safety, will not test order creation')
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return
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}
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const { base, quote } = market
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if (balance[quote] !== undefined && balance[quote].total > 0) {
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log ('balance is not empty, will not test order creation')
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return
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}
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try {
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log ('creating limit buy order...', symbol, minAmount, minPrice)
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let order = await exchange.createLimitBuyOrder (symbol, minAmount, minPrice)
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log ('order created although it should not had to - cleaning up')
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log (order)
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await exchange.cancelOrder (order.id, symbol)
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assert.fail ()
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} catch (e) {
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if (e instanceof ccxt.InsufficientFunds) {
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log ('InsufficientFunds thrown as expected')
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} else {
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log ('InsufficientFunds failed, exception follows:')
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throw e
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}
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}
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}
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