public void TestNormalCase()
{
SampleFrameDisplayerImpl displayer
= new SampleFrameDisplayerImpl(mockDrawer.Object, 10, 3);
ushort[] samples = new ushort[21];
for(int i = 0; i < 21; i++)
{
samples[i] = (ushort)(i * 2);
}
displayer.SetNumSamplesToDisplay(11);
mockDrawer.Setup(x => x.getCanvasWidth()).Returns(31);
displayer.DisplaySampleFrameFromStartIndex(10, 21, samples);
List<LineCoordinates> expectedLines = new List<LineCoordinates>();
// Test that all of the expected lines got called to be drawn
for(int i = 0; i < 10; i++)
{
int expX1 = i * 3;
int expY1 = samples[i + 10];
int expX2 = i * 3 + 3;
int expY2 = samples[i + 11];
LineCoordinates expectedLine = CreateLineCoordinates(expX1, expY1, expX2, expY2);
expectedLines.Add(expectedLine);
}
// The canvas should be cleared every time before drawing
mockDrawer.Verify(x => x.drawLinesOnOscope(It.Is<List<LineCoordinates>>(
lines => ListOfLineCoordinatesStructsEqual(lines, expectedLines))), Times.Once);
}
public void testNumSamplesAvailableLessThanNumSamplesToDisplay()
{
Mock<OscopeWindowClient> mockDrawer = new Mock<OscopeWindowClient>();
SampleFrameDisplayerImpl displayer
= new SampleFrameDisplayerImpl(mockDrawer.Object, 10, 3);
ushort[] samples = new ushort[21];
for (int i = 0; i < 21; i++)
{
samples[i] = (ushort)(i * 2);
}
displayer.SetNumSamplesToDisplay(11);
mockDrawer.Setup(x => x.getCanvasWidth()).Returns(20);
// calling display samples with a start of 11 and 21 total, so 10 samples available.
displayer.DisplaySampleFrameFromStartIndex(11, 21, samples);
}
public void TestSpacingOfTwo()
{
Mock<OscopeWindowClient> mockDrawer = new Mock<OscopeWindowClient>();
SampleFrameDisplayerImpl displayer
= new SampleFrameDisplayerImpl(mockDrawer.Object, 10, 2);
ushort[] samples = new ushort[] { 0, 1, 2, 3 };
displayer.SetNumSamplesToDisplay(3);
mockDrawer.Setup(x => x.getCanvasWidth()).Returns(4);
displayer.DisplaySampleFrameFromStartIndex(1, 4, samples);
List<LineCoordinates> expLines = new List<LineCoordinates>();
expLines.Add(CreateLineCoordinates(0, 1, 2, 2));
expLines.Add(CreateLineCoordinates(2, 2, 4, 3));
mockDrawer.Verify(x => x.drawLinesOnOscope(It.Is<List<LineCoordinates>>
(lines => ListOfLineCoordinatesStructsEqual(lines, expLines)))
, Times.Once);
}
public void testSpacingTimesNumSamplesToDisplayNotEnoughToCoverCanvas()
{
Mock<OscopeWindowClient> mockDrawer = new Mock<OscopeWindowClient>();
SampleFrameDisplayerImpl displayer
= new SampleFrameDisplayerImpl(mockDrawer.Object, 10, 3);
ushort[] samples = new ushort[21];
for (int i = 0; i < 21; i++)
{
samples[i] = (ushort)(i * 2);
}
displayer.SetNumSamplesToDisplay(11);
// Setting canvas width to 17. The line beginning at 15 and going to 18 should
// still be drawn though.
mockDrawer.Setup(x => x.getCanvasWidth()).Returns(32);
displayer.DisplaySampleFrameFromStartIndex(10, 21, samples);
}
public void testSpacingTimesNumSamplesToDisplayGreatherThanCanvasWidth()
{
Mock<OscopeWindowClient> mockDrawer = new Mock<OscopeWindowClient>();
SampleFrameDisplayerImpl displayer
= new SampleFrameDisplayerImpl(mockDrawer.Object, 10, 3);
ushort[] samples = new ushort[21];
for (int i = 0; i < 21; i++)
{
samples[i] = (ushort)(i * 2);
}
displayer.SetNumSamplesToDisplay(11);
// Setting canvas width to 17. The line beginning at 15 and going to 18 should
// still be drawn though.
mockDrawer.Setup(x => x.getCanvasWidth()).Returns(17);
displayer.DisplaySampleFrameFromStartIndex(10, 21, samples);
// The canvas should be cleared every time before drawing
List<LineCoordinates> expLines = new List<LineCoordinates>();
// Test that all of the expected lines got called to be drawn
for (int i = 0; i < 6; i++)
{
int expX1 = i * 3;
int expY1 = samples[i + 10];
int expX2 = i * 3 + 3;
int expY2 = samples[i + 11];
expLines.Add(CreateLineCoordinates(expX1, expY1, expX2, expY2));
}
mockDrawer.Verify(x => x.drawLinesOnOscope(It.Is<List<LineCoordinates>>
(lines => ListOfLineCoordinatesStructsEqual(lines, expLines)))
, Times.Once);
}
