public void DeleteFileWhenInitialize()
{
"使用 With 初始化时，不能要求文件存在。".Test((Func <TextFileLogger, TextFileLogger> extraBuilder) =>
{
var testFile = PrepareNotExistFile("test21.md");
var aLogger = extraBuilder(new TextFileLogger(new FileInfo(testFile.FullName)));
aLogger.Message("YY");
aLogger.Close();
// 无异常。
}).WithArguments(
x => x.WithMaxFileSize(100),
x => x.WithMaxLineCount(100),
x => x.WithMaxLineCount(100, 50),
x => x.WithWholeFileOverride()
);
"初始化时，超过大小的文件内容会清空。".Test(() =>
{
const string testFile = "test22.md";
File.WriteAllText(testFile, "XXXXXXXX\n");
var aLogger = new TextFileLogger(new FileInfo(testFile))
.WithMaxFileSize(4);
aLogger.Message("YY");
aLogger.Close();
var lines = File.ReadAllLines(testFile);
Assert.AreEqual(1, lines.Length);
Assert.IsTrue(lines[0].Contains("YY"));
});
"初始化时，超过行数的文件前面行会删除。".Test(() =>
{
const string testFile = "test23.md";
File.WriteAllText(testFile, "XXXXXXXX\n\nYYYYYYYY\nZZZZZZZZ\n");
var aLogger = new TextFileLogger(new FileInfo(testFile))
.WithMaxLineCount(3, 1);
aLogger.Message("WW");
aLogger.Close();
var lines = File.ReadAllLines(testFile);
Assert.AreEqual(2, lines.Length);
Assert.IsTrue(lines[0].Contains("ZZZZZZZZ"));
});
}