public void InitializerShouldCorrectlyFormatCallStack()
{
ITelemetry telemetry = new DependencyTelemetry();
ITelemetryInitializer initializer = new DependencyCallstacksTelemetryInitializer();
// There should be no call stack info to start
Assert.IsFalse(
telemetry.Context.Properties.ContainsKey(CallStackIdentifier),
"Call stack should not exist before initialization");
// Use OutsideCodeHelper so that part of the stack is detected as the user's code
OutsideCodeHelper.Execute(() => { initializer.Initialize(telemetry); });
// The above line should be the only entry in the stack. Nothing else is "the user's code".
// We'll verify format by making a regex that tests a line of the generated stack against
// the correct namespace and function, allowing a variable filename/linenumber
MethodInfo methodInfo = ((Action <Action>)OutsideCodeHelper.Execute).Method;
Regex callStackEntryRegex = new Regex(string.Format(
CultureInfo.InvariantCulture,
CallStackEntryRegexFormat,
methodInfo.Name,
methodInfo.ReflectedType.FullName.Split('.').Last()));
string[] callStack = telemetry.Context.Properties[CallStackIdentifier].Split(
new char[] { '\n' },
StringSplitOptions.RemoveEmptyEntries);
Assert.IsTrue(
callStack.Length == 1,
"Expected only one call stack entry");
Assert.IsTrue(
callStackEntryRegex.IsMatch(callStack[0]),
"'{0}' does not follow the format: functionName,className,fileInfo\\n",
callStack[0]);
}
public void InitializerShouldAddCallStackForDependencyTelemetry()
{
ITelemetry telemetry = new DependencyTelemetry();
ITelemetryInitializer initializer = new DependencyCallstacksTelemetryInitializer();
// There should be no call stack info to start
Assert.IsFalse(
telemetry.Context.Properties.ContainsKey(CallStackIdentifier),
"Call stack should not exist before initialization");
// Initializing generates call stack info
// Use OutsideCodeHelper so that part of the stack is detected as the user's code
OutsideCodeHelper.Execute(() => { initializer.Initialize(telemetry); });
Assert.IsTrue(
telemetry.Context.Properties.ContainsKey(CallStackIdentifier),
"Call stack should exist");
Assert.IsFalse(
string.IsNullOrWhiteSpace(telemetry.Context.Properties[CallStackIdentifier]),
"Call stack should not be empty");
Assert.IsTrue(
telemetry.Context.Properties[CallStackIdentifier].Contains(typeof(OutsideCodeHelper).Name),
"Call stack should successfully report called methods");
// Initializing again does not overwrite call stack info
telemetry.Context.Properties[CallStackIdentifier] = TestString;
initializer.Initialize(telemetry);
Assert.IsTrue(
telemetry.Context.Properties[CallStackIdentifier].Equals(TestString),
"Subsequent calls to initialize should not overwrite stored call stack");
}
public void InitializerShouldNotAddCallStackForNonDependency()
{
ITelemetry telemetry = new EventTelemetry();
ITelemetryInitializer initializer = new DependencyCallstacksTelemetryInitializer();
// Use OutsideCodeHelper so that part of the stack is detected as the user's code
OutsideCodeHelper.Execute(() => { initializer.Initialize(telemetry); });
Assert.IsFalse(
telemetry.Context.Properties.ContainsKey(CallStackIdentifier),
"Call stack should not exist");
}