public void defaultValueTest()
{
LazyInitObject <int> lazy = default;
Assert.Equal(LazyInitObjectState.UNINITIALIZED, lazy.currentState);
Assert.Throws <InvalidOperationException>(() => lazy.value);
}
public void valueTest_withUserSuppliedLock()
{
int initFuncCalledCount = 0;
object value = new object();
object mutex = new object();
object initFunc()
{
Assert.True(Monitor.IsEntered(mutex));
initFuncCalledCount++;
return(value);
}
var lazy = new LazyInitObject <object>(initFunc, mutex);
Assert.False(Monitor.IsEntered(mutex));
object lazyValue = lazy.value;
Assert.Same(value, lazyValue);
Assert.Equal(1, initFuncCalledCount);
Assert.False(Monitor.IsEntered(mutex));
lazyValue = lazy.value;
Assert.Same(value, lazyValue);
Assert.Equal(1, initFuncCalledCount);
Assert.False(Monitor.IsEntered(mutex));
}
public ASError([ParamDefaultValue("")] ASAny message, int id = 0)
{
this.m_errorID = id;
this.message = message;
this.name = "Error";
this.m_stackTrace = new StackTrace(1, fNeedFileInfo: false);
this.m_lazyStackTraceString = new LazyInitObject <string>(_initStackTrace);
}
internal ClassConstructor(Class declaringClass)
{
m_declaringClass = declaringClass;
m_metadata = MetadataTagCollection.empty;
m_lazyRuntimeDispatch = new LazyInitObject <RuntimeDispatch.MethodStub>(
() => RuntimeDispatch.generateCtorStub(this)
);
}
public void currentStateTest_beforeValueAccessed()
{
var lazy = new LazyInitObject <int>(() => 0);
Assert.Equal(LazyInitObjectState.UNINITIALIZED, lazy.currentState);
lazy = new LazyInitObject <int>(() => 1000, new object(), LazyInitRecursionHandling.RETURN_DEFAULT);
Assert.Equal(LazyInitObjectState.UNINITIALIZED, lazy.currentState);
}
public void valueTest_whenInitFuncThrows()
{
LazyInitObject <int> lazy = default;
Exception ex = new Exception();
int initFunc() => throw ex;
lazy = new LazyInitObject <int>(initFunc);
var caughtEx = Assert.Throws <Exception>(() => lazy.value);
Assert.Same(ex, caughtEx);
Assert.Equal(LazyInitObjectState.FAILED, lazy.currentState);
Assert.Throws <InvalidOperationException>(() => lazy.value);
}
public void currentStateTest_afterFirstValueAccess()
{
LazyInitObject <int> lazy = default;
int initFunc()
{
Assert.Equal(LazyInitObjectState.IN_INITIALIZER, lazy.currentState);
return(10000);
}
lazy = new LazyInitObject <int>(initFunc);
_ = lazy.value;
Assert.Equal(LazyInitObjectState.COMPLETE, lazy.currentState);
_ = lazy.value;
Assert.Equal(LazyInitObjectState.COMPLETE, lazy.currentState);
}
public void valueTest()
{
int initFuncCalledCount = 0;
object value = new object();
object initFunc()
{
initFuncCalledCount++;
return(value);
}
var lazy = new LazyInitObject <object>(initFunc);
object lazyValue = lazy.value;
Assert.Same(value, lazyValue);
Assert.Equal(1, initFuncCalledCount);
lazyValue = lazy.value;
Assert.Same(value, lazyValue);
Assert.Equal(1, initFuncCalledCount);
}
public void recursionHandlingTest()
{
LazyInitObject <int> lazy = default;
lazy = new LazyInitObject <int>(() => {
Assert.Throws <InvalidOperationException>(() => lazy.value);
return(10000);
});
Assert.Equal(10000, lazy.value);
lazy = new LazyInitObject <int>(
() => {
Assert.Equal(0, lazy.value);
return(10000);
},
null,
LazyInitRecursionHandling.RETURN_DEFAULT
);
Assert.Equal(10000, lazy.value);
int recCallCount = 0;
lazy = new LazyInitObject <int>(
() => {
recCallCount++;
if (recCallCount < 5)
{
Assert.Equal(5, lazy.value);
}
return(recCallCount);
},
null,
LazyInitRecursionHandling.RECURSIVE_CALL
);
Assert.Equal(5, lazy.value);
}
public void valueTest_multipleThreads_initFuncThrows()
{
var threads = new Thread[16];
var exceptions = new Exception[threads.Length];
var lazy = new LazyInitObject <int>(() => {
Thread.Sleep(100);
throw new Exception();
});
for (int i = 0; i < threads.Length; i++)
{
int curIndex = i;
threads[i] = new Thread(() => {
try {
_ = lazy.value;
}
catch (Exception e) {
exceptions[curIndex] = e;
}
});
}
for (int i = 0; i < threads.Length; i++)
{
threads[i].Start();
Thread.Sleep(10);
}
for (int i = 0; i < threads.Length; i++)
{
threads[i].Join();
}
Assert.Equal(LazyInitObjectState.FAILED, lazy.currentState);
Assert.DoesNotContain(exceptions, x => x == null);
}
public void valueTest_multipleThreads()
{
var threads = new Thread[16];
var values = new ConcurrentBag <int>();
int returnValue = 10000;
var lazy = new LazyInitObject <int>(
() => {
Thread.Sleep(100);
return(Interlocked.Increment(ref returnValue));
},
recursionHandling: LazyInitRecursionHandling.RECURSIVE_CALL
);
for (int i = 0; i < threads.Length; i++)
{
threads[i] = new Thread(() => values.Add(lazy.value));
}
for (int i = 0; i < threads.Length; i++)
{
threads[i].Start();
Thread.Sleep(10);
}
for (int i = 0; i < threads.Length; i++)
{
threads[i].Join();
}
Assert.Equal(10001, returnValue);
Assert.Equal(10001, lazy.value);
Assert.Equal(LazyInitObjectState.COMPLETE, lazy.currentState);
Assert.Equal <int>(new[] { 10001 }, values.ToArray().Distinct());
}
