public StateService(PersistentComponentState applicationState)
{
_applicationState = applicationState;
if (RuntimeInformation.ProcessArchitecture != Architecture.Wasm)
{
_subscription = applicationState.RegisterOnPersisting(PersistAsJson);
}
}
public void PersistState_ThrowsForDuplicateKeys()
{
// Arrange
var currentState = new Dictionary <string, byte[]>();
var applicationState = new PersistentComponentState(currentState, new List <Func <Task> >());
applicationState.PersistingState = true;
var myState = new byte[] { 1, 2, 3, 4 };
applicationState.PersistAsJson("MyState", myState);
// Act & Assert
Assert.Throws <ArgumentException>(() => applicationState.PersistAsJson("MyState", myState));
}
public void InitializeExistingState_ThrowsIfAlreadyInitialized()
{
// Arrange
var applicationState = new PersistentComponentState(new Dictionary <string, byte[]>(), new List <Func <Task> >());
var existingState = new Dictionary <string, byte[]>
{
["MyState"] = new byte[] { 1, 2, 3, 4 }
};
applicationState.InitializeExistingState(existingState);
// Act & Assert
Assert.Throws <InvalidOperationException>(() => applicationState.InitializeExistingState(existingState));
}
public void PersistAsJson_NullValueAsync()
{
// Arrange
var currentState = new Dictionary <string, byte[]>();
var applicationState = new PersistentComponentState(currentState, new List <Func <Task> >());
applicationState.PersistingState = true;
// Act
applicationState.PersistAsJson <byte[]>("MyState", null);
// Assert
Assert.True(currentState.TryGetValue("MyState", out var stored));
Assert.Null(JsonSerializer.Deserialize <byte[]>(stored));
}
public void PersistAsJson_SerializesTheDataToJsonAsync()
{
// Arrange
var currentState = new Dictionary <string, byte[]>();
var applicationState = new PersistentComponentState(currentState, new List <Func <Task> >());
applicationState.PersistingState = true;
var myState = new byte[] { 1, 2, 3, 4 };
// Act
applicationState.PersistAsJson("MyState", myState);
// Assert
Assert.True(currentState.TryGetValue("MyState", out var stored));
Assert.Equal(myState, JsonSerializer.Deserialize <byte[]>(stored));
}
public void InitializeExistingState_SetupsState()
{
// Arrange
var applicationState = new PersistentComponentState(new Dictionary <string, byte[]>(), new List <Func <Task> >());
var existingState = new Dictionary <string, byte[]>
{
["MyState"] = JsonSerializer.SerializeToUtf8Bytes(new byte[] { 1, 2, 3, 4 })
};
// Act
applicationState.InitializeExistingState(existingState);
// Assert
Assert.True(applicationState.TryTakeFromJson <byte[]>("MyState", out var existing));
Assert.Equal(new byte[] { 1, 2, 3, 4 }, existing);
}
public void TryRetrieveFromJson_NullValue()
{
// Arrange
var serialized = JsonSerializer.SerializeToUtf8Bytes <byte[]>(null);
var existingState = new Dictionary <string, byte[]>()
{
["MyState"] = serialized
};
var applicationState = new PersistentComponentState(new Dictionary <string, byte[]>(), new List <Func <Task> >());
applicationState.InitializeExistingState(existingState);
// Act
Assert.True(applicationState.TryTakeFromJson <byte[]>("MyState", out var stored));
// Assert
Assert.Null(stored);
Assert.False(applicationState.TryTakeFromJson <byte[]>("MyState", out _));
}
public void TryRetrieveFromJson_DeserializesTheDataFromJson()
{
// Arrange
var myState = new byte[] { 1, 2, 3, 4 };
var serialized = JsonSerializer.SerializeToUtf8Bytes(myState);
var existingState = new Dictionary <string, byte[]>()
{
["MyState"] = serialized
};
var applicationState = new PersistentComponentState(new Dictionary <string, byte[]>(), new List <Func <Task> >());
applicationState.InitializeExistingState(existingState);
// Act
Assert.True(applicationState.TryTakeFromJson <byte[]>("MyState", out var stored));
// Assert
Assert.Equal(myState, stored);
Assert.False(applicationState.TryTakeFromJson <byte[]>("MyState", out _));
}
