let historyRecordManager = new HistoryRecordManager();

historyRecordManager.push(new HistoryRecordData("05/10", 1000));
historyRecordManager.push(new HistoryRecordData("05/11", 100));
historyRecordManager.push(new HistoryRecordData("05/12", 200));
historyRecordManager.push(new HistoryRecordData("05/13", 2000));
historyRecordManager.push(new HistoryRecordData("05/14", 10000));

QUnit.test( "push", function( assert ) {
	assert.equal(historyRecordManager.count, 5);
});

QUnit.test( "getAt", function( assert ) {
	assert.equal(historyRecordManager.getDateAt(0), "05/10");
	assert.equal(historyRecordManager.getDateAt(4), "05/14");
});

QUnit.test( "clear", function( assert ) {
	let historyRecordManagerForClear = new HistoryRecordManager();
	historyRecordManagerForClear.push(new HistoryRecordData("05/10", 1));
	historyRecordManagerForClear.clear();

	assert.equal(historyRecordManagerForClear.count, 0);
});

QUnit.test( "underValueForGraph", function( assert ) {
	assert.equal(historyRecordManager.underValueForGraph(), 100);
});

QUnit.test( "upperValueForGraph", function( assert ) {
	assert.equal(historyRecordManager.upperValueForGraph(), 10000);
});