public void Log_WhenLogFileDoesNotExists_CreatesFileAndLogsText()
{
// Arrange
string path = "error.log";
Assert.IsFalse(File.Exists(path), "Test setup failed.");
var provider = new XmlFileLoggingProvider(LoggingEventType.Debug, path, null);
File.Delete(path);
Assert.IsFalse(File.Exists(path), "Test setup failed.");
try
{
// Act
provider.Log("Some message");
// Assert
Assert.IsTrue(File.Exists(path), "The provider did not create the file and did not log.");
}
finally
{
File.Delete(path);
}
}
public void Path_ConstructorSuppliedWithRelativePath_ReturnsRootedPath()
{
// Arrange
string relativePath = "log.txt";
// Act
XmlFileLoggingProvider provider = CreateXmlFileLogger(relativePath);
// Assert
Assert.IsTrue(Path.IsPathRooted(provider.Path),
"XmlFileLoggingProvider.Path did not return a rooted path. Path: " + provider.Path);
}
public void Path_ConstructorSuppliedWithUncanonicalName_ReturnsCanonicalName()
{
// Arrange
string uncanonicalPath = "c:\\windows\\..\\log.xml";
string expectedCanonicalPath = "c:\\log.xml";
// Act
XmlFileLoggingProvider provider = CreateXmlFileLogger(uncanonicalPath);
// Assert
Assert.AreEqual(expectedCanonicalPath, provider.Path,
"XmlFileLoggingProvider.Path did not return a canonical path. Path: " + provider.Path);
}
public void Initialize_WithMissingPath_ThrowsExpectedException()
{
// Arrange
var provider = new XmlFileLoggingProvider();
var invalidConfiguration = new NameValueCollection();
try
{
// Act
provider.Initialize("Valid name", invalidConfiguration);
// Assert
Assert.Fail("Exception expected");
}
catch (Exception ex)
{
Assert.IsTrue(ex.Message.Contains("missing 'path' attribute"),
"Exception not expressive enough. Actual message: " + ex.Message);
}
}
public void Log_UninitializedProvider_ThrowsDescriptiveException()
{
// Arrange
var provider = new XmlFileLoggingProvider();
try
{
// Act
provider.Log("Some message");
// Assert
Assert.Fail("Exception expected.");
}
catch (InvalidOperationException ex)
{
Assert.IsTrue(ex.Message.Contains("The provider has not been initialized"),
"A provider that hasn't been initialized correctly, should throw a descriptive " +
"exception. Actual: " + ex.Message + Environment.NewLine + ex.StackTrace);
Assert.IsTrue(ex.Message.Contains("XmlFileLoggingProvider"),
"The message should contain the type name of the unitialized provider. Actual: " +
ex.Message);
}
}
