public void ExportExcelTest()
{
// given 匯出策略
IExportStrategy exporter = new ExcelExporter();
// when export
var reportObj = new LunchReport_V3(exporter);
var result = reportObj.Export("午餐清單");
// then assert
Assert.AreEqual("午餐清單.excel", result);
}
public void ExportStrategyWithFactoryTest()
{
var exportType = "excel";
// 將「策略選擇(switch)」的工作交給工廠(factory)負責，如此可以比較整潔
var exporter = ExportManageTool.GetExporter(exportType);
// 策略模式的目標就是使核心類別(報表類別)不再關心策略是如何被選擇的
// 把「策略的選擇」這件事從核心邏輯(取得報表資料)中抽離出來
var reportObj = new LunchReport_V3(exporter);
var fileName = reportObj.Export("午餐清單");
Assert.AreEqual("excel", _GetFileExt(fileName));
}
public void GivenExportTypeTest()
{
var exportType = "excel";
// 完整重構的 strategy
// 在報表物件內部已不再包含策略的選擇(switch)，變成需由外部決定後再傳入報表物件
IExportStrategy exporter = null;
switch (exportType)
{
case "pdf":
exporter = new PDFExporter();
break;
case "excel":
default:
exporter = new ExcelExporter();
break;
}
var reportObj = new LunchReport_V3(exporter);
var result = reportObj.Export("午餐清單");
Assert.AreEqual(exportType, _GetFileExt(result));
}
