public void EvaluationAssignmentOfVariable()
{
Initialize(@"form ExampleBlock {
question Q1 (number) ""Give me a number"";
if (Q1==2){
statement S1 (number, Q1) ""you wrote 2"";
}
else {
statement S2 (number, Q1) ""you didnt write 2"";
};
}
");
Assert.IsTrue(Builder.RunEvaluators());
Identifier i = new Identifier("Q1");
NumberWrapper nw = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValue(i);
nw.Value = 2;
Assert.IsTrue(Builder.RunEvaluators());
Identifier S1 = new Identifier("S1");
NumberWrapper S1_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValue(S1);
Assert.AreEqual(nw.Value, S1_value.Value);
}
public void EvaluationOfUnavailableBlock()
{
Initialize(@"form ExampleBlock {
question Q1 (number) ""Give me a number"";
if (Q1==2){
statement S1 (number, (123+(123/Q1))) ""you wrote 2"";
};
}
");
Assert.IsTrue(Builder.RunEvaluators());
NumberWrapper nw = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("Q1");
nw.Value = 1; // new answer to the question
Assert.IsTrue(Builder.RunEvaluators(), "reevaluation failed");
NumberWrapper S1_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S1");
Assert.IsNotNull(S1_value);
nw.Value = 0; // new answer to the question, statement should not be evaluated
Assert.IsTrue(Builder.RunEvaluators(), "division by zero exception should not be thrown");
bool correctException = false;
try
{
Builder.DataContext.ValueReferenceTable.GetValueOrNull("S1");
}
catch (EvaluationError)
{
correctException = true;
}
Assert.IsTrue(correctException, "exception not caught, identifier should be removed");
}
public void Maths()
{
Initialize(@"form ExampleBlock {
question Q1 (number) ""Give me a number"";
statement S1 (number, (1+(2-(3-(4*Q1))))) ""bla"";
}
");
Assert.IsTrue(Builder.RunEvaluators(), "evaluation");
NumberWrapper nw = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("Q1");
Assert.IsNotNull(nw);
nw.Value = 42; // answer to the question
Assert.IsTrue(Builder.RunEvaluators(), "reevaluation");
NumberWrapper S1_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S1");
Assert.IsNotNull(S1_value);
Assert.AreEqual((1 + (2 - (3 - (4 * 42)))), S1_value.Value);
nw.Value = -6; // answer to the question
Assert.IsTrue(Builder.RunEvaluators(), "reevaluation");
S1_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S1");
Assert.IsNotNull(S1_value);
Assert.AreEqual((1 + (2 - (3 - (4 * (-6))))), S1_value.Value);
}
public void PlusOperatorTest()
{
//we expect that yesno should throw and exception but number and text should add, resp. concat.
NumberWrapper na = new NumberWrapper(12345);
NumberWrapper nb = new NumberWrapper(12345);
TextWrapper ta = new TextWrapper("bla");
TextWrapper tb = new TextWrapper("ble");
Assert.AreEqual(24690, (na + nb).Value);
Assert.AreEqual("blable", (ta + tb).Value);
}
public void DivisionByZeroTest()
{
//we expect that yesno should throw and exception but number and text should add, resp. concat.
NumberWrapper na = new NumberWrapper(12345);
NumberWrapper nb = new NumberWrapper(0);
bool exceptionRaised = false;
try{
var c = na / nb;
}
catch (Exception e) {
Assert.IsInstanceOfType(e, typeof(DivisionByZeroError));
exceptionRaised = true;
}
Assert.IsTrue(exceptionRaised, "No exception has been raised");
}
public void EvaluationReassignmentOfVariable()
{
Initialize(@"form ExampleBlock {
question Q1 (number) ""Give me a number"";
if (Q1==2){
statement S1 (number, (123+(Q1*2))) ""you wrote 2"";
}
else {
statement S2 (number, Q1) ""you didnt write 2"";
};
}
");
Assert.IsTrue(Builder.RunEvaluators(), "First evaluation");
NumberWrapper S1_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S1");
Assert.IsNull(S1_value, "S1 should not exist");
NumberWrapper S2_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S2");
Assert.IsNull(S2_value, "S2 should not exist");
NumberWrapper nw = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("Q1");
nw.Value = 2; // answer to the question so the if condition is true
Assert.IsTrue(Builder.RunEvaluators(), "Second evaluation");
S1_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S1");
Assert.IsNotNull(S1_value, "S1 variable was not evaluated correctly");
S2_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S2");
Assert.IsNull(S2_value, "S2 variable is evaluated, shouldnt be");
Assert.AreEqual(2 * 2 + 123, S1_value.Value, "Bad maths");
nw = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("Q1");
nw.Value = 31; // answer to the question so the if condition is false
Assert.IsTrue(Builder.RunEvaluators(), "Third evaluation");
S1_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S1");
Assert.IsNull(S1_value, "S1 shouldnt exist anymore");
S2_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S2");
Assert.IsNotNull(S2_value, "S2 should appear");
}
public void EvaluatedValueComparisson()
{
YesnoWrapper yes = new YesnoWrapper(true);
YesnoWrapper no = new YesnoWrapper(false);
NumberWrapper a = new NumberWrapper(12345);
NumberWrapper b = new NumberWrapper(12345);
Assert.IsTrue((a == b).ToBool());
Number n = new Number();
n.Value = 12345;
NumberWrapper c = new NumberWrapper(n);
Assert.IsTrue((c == a).ToBool());
Assert.IsFalse((c != a).ToBool());
b.Value = 23456;
Assert.IsFalse((c == b).ToBool());
Assert.IsTrue((c != b).ToBool());
}
public void EvaluationDivisionByZeroReassignment()
{
Initialize(@"form ExampleBlock {
question Q1 (number) ""Give me a number"";
statement S1 (number, (123+(123/Q1))) ""you wrote 2"";
}
");
Assert.IsTrue(Builder.RunEvaluators());
NumberWrapper nw = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("Q1");
nw.Value = 0; // new answer to the question, division by zero
Assert.IsFalse(Builder.RunEvaluators(), "division by zero");
Assert.IsInstanceOfType(Builder.DataContext.ASTHandlerExceptions[0], typeof(DivisionByZeroError), "incorrect exception");
nw.Value = 1; // new answer to the question
Assert.IsTrue(Builder.RunEvaluators(), "reevaluation failed");
NumberWrapper S1_value = (NumberWrapper)Builder.DataContext.ValueReferenceTable.GetValueOrNull("S1");
Assert.IsNotNull(S1_value);
Assert.AreEqual(123 + (123 / 1), S1_value.Value);
}
//This region contains all HUD data
#region HUD data
void initializeHUD()
{
hud = new HUDComponent(this, GraphicsDevice);
BaseTextType temp;
temp = new BaseTextType("Score:", "Fonts/LindseySmall", new Vector2(10, 5), Color.Blue);
hud.addText(temp);
temp = new BaseTextType("Score Number", "Fonts/LindseySmall", new Vector2(55, 5), Color.Blue);
temp = new NumberWrapper(temp, score);
hud.addText(temp);
temp = new BaseTextType("Lives:", "Fonts/LindseySmall", new Vector2(100, 5), Color.Blue);
hud.addText(temp);
temp = new BaseTextType("Lives Number", "Fonts/LindseySmall", new Vector2(145, 5), Color.Blue);
temp = new NumberWrapper(temp, lives);
hud.addText(temp);
temp = new BaseTextType("Level:", "Fonts/LindseySmall", new Vector2(170, 5), Color.Blue);
hud.addText(temp);
temp = new BaseTextType("Level Number", "Fonts/LindseySmall", new Vector2(220, 5), Color.Blue);
temp = new NumberWrapper(temp, levelNumber);
hud.addText(temp);
temp = new BaseTextType("Add Score Number", "Fonts/LindseySmall", new Vector2(60, 15), Color.Yellow);
temp = new NumberWrapper(temp, 0);
temp = new FloatWrapper(temp, new Vector2(0, 3), 1.0f);
temp = new FadeWrapper(temp, 1.0f, -1);
temp = new ScaleWrapper(temp, 1.02f, 1.0f, 1.0f);
hud.addText(temp);
Components.Add(hud);
}
public void NumberWrapper()
{
var a = new NumberWrapper<double>(2);
var b = new NumberWrapper<double>(3);
a.RaisedTo(b).Should().Be(new NumberWrapper<double>(8));
}
/// <summary>
/// Uses a native library to load an image and extract answers from it.
/// Works with both image bytes as well as just an image file path.
/// This method is unsafe.
/// </summary>
/// <param name="sheet">The path to the image containing answers to be extracted as a string or an array of image bytes.</param>
/// <param name="studentNumberAnswers">This parameter will contain the student number answers extracted from the student number table.</param>
/// <param name="extractedAnswers">This parameter will contain the answers extracted from the answer tables.</param>
/// <returns>True if the process has succeeded and false otherwise.</returns>
bool ExtractAnswers <T>(T sheet, out bool[,,] studentNumberAnswers, out bool[,,] extractedAnswers)
{
extractedAnswers = new bool[3, 8, 5];
studentNumberAnswers = new bool[1, 5, 10];
// the first row and the first column of the original tables were removed as they do not contain any answers
int studentNumberRows = parameters.StudentTableRows - 1;
int studentNumberColumns = parameters.StudentTableColumns - 1;
int answerRows = parameters.AnswerTableRows - 1;
int answerColumns = parameters.AnswerTableColumns - 1;
NumberWrapper numberWrapper = new NumberWrapper();
AnswerWrapper answerWrapper = new AnswerWrapper();
bool success = false;
unsafe
{
bool *numberPtr = numberWrapper.number;
bool *answersPtr = answerWrapper.answers;
bool *successPtr = &success;
string sheetFilename;
byte[] sheetImageBytes;
// if the sheet has been passed as a filename
if ((sheetFilename = sheet as string) != null)
{
NativeAPIWrapper.extract_answers_path_api(sheetFilename, parameters, numberPtr, answersPtr, successPtr);
}
// if the sheet has been passed as image bytes
else if ((sheetImageBytes = sheet as byte[]) != null)
{
// the image is saved in PNG (or another format) so we need to convert it to BMP which the library can read
Image sheetImage = ImageHandling.GetBitmap(sheetImageBytes);
int imageRows = sheetImage.Height;
int imageCols = sheetImage.Width;
byte[] sheetImageBitmapBytes = ImageHandling.GetImageBytes(sheetImage, ImageFormat.Bmp);
sheetImage.Dispose();
fixed(byte *imageBitmapBytesPtr = sheetImageBitmapBytes)
{
NativeAPIWrapper.extract_answers_image_api(imageBitmapBytesPtr, imageRows, imageCols, parameters, numberPtr, answersPtr, successPtr);
}
}
else
{
return(false);
}
if (!success)
{
return(false);
}
// convert the student number values from a C-style array of answers to a C# multi-dimensional array
for (int row = 0; row < studentNumberRows; row++)
{
for (int col = 0; col < studentNumberColumns; col++)
{
if (numberPtr[row * studentNumberColumns + col] == true)
{
studentNumberAnswers[0, row, col] = true;
}
else
{
studentNumberAnswers[0, row, col] = false;
}
}
}
// convert the answer table values from a C-style array to a C# multi-dimensional array
for (int table = 0; table < parameters.TableCount - 1; table++)
{
for (int row = 0; row < answerRows; row++)
{
for (int col = 0; col < answerColumns; col++)
{
if (answersPtr[table * answerRows * answerColumns + row * answerColumns + col] == true)
{
extractedAnswers[table, row, col] = true;
}
else
{
extractedAnswers[table, row, col] = false;
}
}
}
}
}
return(true);
}
public void NumberWrapper()
{
var a = new NumberWrapper<double>(-34.4);
var b = new NumberWrapper<double>(-1);
a.Plus(b).Should().Be(new NumberWrapper<double>(-35.4));
}
public void NumberWrapper()
{
var a = new NumberWrapper<double>(-34.4);
a.Floor().Should().Be(new NumberWrapper<double>(-35));
}
public void NumberWrapper()
{
var a = new NumberWrapper<double>(12);
var b = new NumberWrapper<double>(3);
a.DividedBy(b).Should().Be(new NumberWrapper<double>(4));
}
public WidgetBase GetWidget(QuestionUnit unit, NumberWrapper typeWrapper)
{
unit.InitialiseValue(typeWrapper);
return(new NumberWidget(unit));
}
public void NumberWrapper()
{
var a = new NumberWrapper<int>(34);
var b = new NumberWrapper<int>(15);
a.Remainder(b).Should().Be(new NumberWrapper<int>(4));
}
public void NumberWrapper()
{
var a = new NumberWrapper<double>(-34.4);
a.Abs().Should().Be(new NumberWrapper<double>(34.4));
}
//This region contains code for the HUD component, such as initializing and loading, as well as Event Handlers
#region HUD Data
void initializeHUD()
{
hud = new HUDComponent(this, GraphicsDevice);
BaseTextType temp;
temp = new TextType("Score", new Vector2(190, 90), Color.Red);
hud.addText(temp);
temp = new TextType("Score Number", new Vector2(190, 105), Color.Red);
temp = new NumberWrapper(temp, score);
hud.addText(temp);
temp = new TextType("Level", new Vector2(190, 130), Color.Red);
hud.addText(temp);
temp = new TextType("Level Number", new Vector2(210, 145), Color.Red);
temp = new NumberWrapper(temp, level);
hud.addText(temp);
temp = new TextType("Bonus", new Vector2(190, 170), Color.Red);
hud.addText(temp);
temp = new TextType("Multiplier Number", new Vector2(210, 185), Color.Red);
temp = new NumberWrapper(temp, multiplier);
hud.addText(temp);
temp = new TextType("High\nScore", new Vector2(190, 210), Color.Red);
hud.addText(temp);
temp = new TextType("High Score Number", new Vector2(190, 245), Color.Red);
temp = new NumberWrapper(temp, highScores.getHighScore());
hud.addText(temp);
temp = new TextType("Next Level", new Vector2(25, 160), Color.White);
temp = new FloatWrapper(temp, new Vector2(0, -3), 3.0f);
hud.addText(temp);
temp = new TextType("Next Level Number", new Vector2(90, 190), Color.White);
temp = new NumberWrapper(temp, level);
temp = new FloatWrapper(temp, new Vector2(0, -3), 3.0f);
hud.addText(temp);
temp = new TextType("Add Score Number", new Vector2(80, 240), Color.Yellow);
temp = new NumberWrapper(temp, 0);
temp = new FloatWrapper(temp, new Vector2(0, -3), 1.0f);
hud.addText(temp);
temp = new TextType("Multiplier Bonus", new Vector2(100, 100), Color.Orange);
temp = new ScaleWrapper(temp, 1, 1.5f, 0.5f, 3);
hud.addText(temp);
temp = new TextType("Add Multiplier Number", new Vector2(100, 130), Color.Orange);
temp = new NumberWrapper(temp, level);
temp = new ScaleWrapper(temp, 1, 1.5f, 0.5f, 3);
hud.addText(temp);
temp = new TextType("Bonus Expired", new Vector2(25, 120), Color.Orange);
temp = new FadeWrapper(temp, 4);
hud.addText(temp);
Components.Add(hud);
}