public async Task TestFileChangeNotification()
{
// Prevent multiple tests accessing the app config.
using (await _configFileLock.LockAsync())
{
// Get the test config file path.
string filePath = TestConfigurationSection.Active.FilePath;
Trace.WriteLine($"Configuration file: '{filePath}'");
Assert.IsFalse(string.IsNullOrWhiteSpace(filePath));
Assert.IsTrue(File.Exists(filePath));
// Load config file directly (we load into string so we can recreate at end of the test.
string original = File.ReadAllText(filePath);
// Parse it and modify
XDocument document = XDocument.Parse(original);
XElement testElement = document.Element("test");
Assert.IsNotNull(testElement);
XElement customElement = testElement.Element("custom");
Tuple <XObject, XObject> difference = customElement.DeepEquals(
TestConfigurationSection.Active.Custom,
XObjectComparisonOptions.Semantic);
Assert.IsNull(difference, $"{difference?.Item1} : {difference?.Item2}");
// Modify
string str1Random = Tester.RandomString() ?? string.Empty;
string str2Random = Tester.RandomString() ?? string.Empty;
// Update the custom node.
customElement.RemoveAll();
XNamespace ns = customElement.Name.Namespace;
customElement.Add(
new XElement(ns + "string1", str1Random),
new XElement(ns + "string2", str2Random));
// Save file
document.Save(filePath);
// Check for changes
ConfigurationSection <TestConfigurationSection> .ConfigurationChangedEventArgs change =
await WaitForChanges(new CancellationTokenSource(TimeSpan.FromSeconds(1)).Token);
Assert.IsNotNull(change);
Assert.IsTrue(change.Contains("<test>"));
Assert.IsTrue(change.WasChanged("<test><custom>"));
XElement activeCustom = TestConfigurationSection.Active.Custom;
Assert.IsNotNull(activeCustom);
AssertString("custom", activeCustom.Name.LocalName, options: TextOptions.NormalizeLineEndings);
AssertString(
str1Random,
activeCustom.Element("string1")?.Value,
options: TextOptions.NormalizeLineEndings);
AssertString(
str2Random,
activeCustom.Element("string2")?.Value,
options: TextOptions.NormalizeLineEndings);
// Revert
File.WriteAllText(filePath, original);
change = await WaitForChanges(new CancellationTokenSource(TimeSpan.FromSeconds(1)).Token);
Assert.IsNotNull(change);
Assert.IsTrue(change.Contains("<test>"));
Assert.IsTrue(change.WasChanged("<test><custom>"));
}
}
public async Task TestChangeNotificationAndSave()
{
// Prevent multiple tests accessing the app config.
using (await _configFileLock.LockAsync())
{
Assert.IsTrue(TestConfigurationSection.Active.HasFile);
XElement custom = TestConfigurationSection.Active.Custom;
Assert.IsNotNull(custom);
XElement custom2 = TestConfigurationSection.Active.Custom;
Assert.IsNotNull(custom2);
Assert.AreNotSame(
custom,
custom2,
"Get element should retrieve fresh XElement objects to prevent corruption.");
// Get original values.
string str1 = TestConfigurationSection.Active.String;
string str2 = TestConfigurationSection.Active.String2;
string cStr = custom.ToString(SaveOptions.DisableFormatting);
Assert.AreEqual(cStr, custom2.ToString(SaveOptions.DisableFormatting));
Assert.AreEqual("custom", custom.Name.LocalName);
// Generate random values
string str1Random = Tester.RandomString() ?? string.Empty;
string str2Random = Tester.RandomString() ?? string.Empty;
// Update the custom node.
XNamespace ns = custom.Name.Namespace;
TestConfigurationSection.Active.Custom = new XElement(
ns + "custom",
new XElement(ns + "string1", str1Random),
new XElement(ns + "string2", str2Random));
TestConfigurationSection.Active.String = str1Random;
TestConfigurationSection.Active.String2 = str2Random;
TestConfigurationSection.Active.Save();
// Check for changes
ConfigurationSection <TestConfigurationSection> .ConfigurationChangedEventArgs change =
await WaitForChanges(new CancellationTokenSource(TimeSpan.FromSeconds(1)).Token);
Assert.IsNotNull(change);
Assert.IsTrue(change.WasChanged("<test>"));
Assert.IsTrue(change.Contains("<test><custom>"));
Assert.IsTrue(change.Contains("<test>.string"));
Assert.IsTrue(change.Contains("<test>.string2"));
custom = TestConfigurationSection.Active.Custom;
Assert.IsNotNull(custom);
Assert.AreEqual("custom", custom.Name.LocalName);
AssertString(str1Random, custom.Element("string1")?.Value, options: TextOptions.NormalizeLineEndings);
AssertString(str2Random, custom.Element("string2")?.Value, options: TextOptions.NormalizeLineEndings);
AssertString(
str1Random,
TestConfigurationSection.Active.String,
options: TextOptions.NormalizeLineEndings);
AssertString(
str2Random,
TestConfigurationSection.Active.String2,
options: TextOptions.NormalizeLineEndings);
// Revert
// Update the custom node.
TestConfigurationSection.Active.Custom = XElement.Parse(cStr, LoadOptions.PreserveWhitespace);
TestConfigurationSection.Active.String = str1;
TestConfigurationSection.Active.String2 = str2;
TestConfigurationSection.Active.Save();
// Check for changeschange =
change = await WaitForChanges(new CancellationTokenSource(TimeSpan.FromSeconds(1)).Token);
Assert.IsNotNull(change);
Assert.IsTrue(change.WasChanged("<test>"));
Assert.IsTrue(change.Contains("<test><custom>"));
Assert.IsTrue(change.Contains("<test>.string"));
Assert.IsTrue(change.Contains("<test>.string2"));
custom = TestConfigurationSection.Active.Custom;
Assert.IsNotNull(change);
AssertString("custom", custom.Name.LocalName, options: TextOptions.NormalizeLineEndings);
AssertString(
cStr,
custom.ToString(SaveOptions.DisableFormatting),
options: TextOptions.NormalizeLineEndings);
AssertString(str1, TestConfigurationSection.Active.String, options: TextOptions.NormalizeLineEndings);
AssertString(str2, TestConfigurationSection.Active.String2, options: TextOptions.NormalizeLineEndings);
}
}
