public void Constructor_CreatesHandle()
{
// Arrange
var gl = Substitute.For<IOpenGL30>();
gl.CreateShader((uint)ShaderType.VertexShader).Returns(1u);
// Act
var newShader = new VertexShader(gl, "Foo");
// Assert
Assert.AreEqual(1, newShader.Handle);
Assert.AreEqual("Foo", newShader.Code);
}
public void GetCompileResults_ReturnsString()
{
// Arrange
var gl = Substitute.For<IOpenGL30>();
gl.CreateShader(Arg.Any<uint>()).Returns(1u);
gl.WhenForAnyArgs(g => g.GetShaderiv(0, (uint)ShaderParameters.InfoLogLength, Arg.Any<int[]>()))
.Do(x => ((int[])x[2])[0] = 1 );
var result = new string(' ', 1024);
gl.WhenForAnyArgs(g => g.GetShaderInfoLog(Arg.Any<uint>(), Arg.Any<int>(), Arg.Any<int[]>(), ref result))
.Do( x =>
{
((int[])x[2])[0] = 1;
x[3] = "A";
});
var shader = new VertexShader(gl, "Foo");
// Act
var results = shader.GetCompilationResults();
// Assert
Assert.AreEqual("A", results.Message);
}
public void Compile_Succeeds_SetsShaderSource()
{
// Arrange
var gl = Substitute.For<IOpenGL30>();
gl.CreateShader(Arg.Any<uint>()).Returns(1u);
gl.WhenForAnyArgs(g => g.GetShaderiv(Arg.Any<uint>(), Arg.Any<uint>(), Arg.Any<int[]>()))
.Do(
x =>
{
if ((ShaderParameters)x[1] == ShaderParameters.CompileStatus)
((int[])x[2])[0] = (int)GLboolean.True;
});
var shader = new VertexShader(gl, "Foo");
// Act
shader.Compile();
// Assert
gl.Received().ShaderSource(1, 1, Arg.Is<string[]>(s => s.SequenceEqual(new [] { "Foo"} )), Arg.Is<int[]>(s => s.SequenceEqual(new [] { 3 })) );
gl.Received().CompileShader(1);
}
public void Compile_CompilationFails_ThrowsShaderCompilationResults_ReturnsMessage_SuccessIsFalse()
{
// Arrange
var gl = Substitute.For<IOpenGL30>();
gl.CreateShader(Arg.Any<uint>()).Returns(1u);
gl.WhenForAnyArgs(g => g.GetShaderiv(Arg.Any<uint>(), Arg.Any<uint>(), Arg.Any<int[]>()))
.Do(
x =>
{
if ((ShaderParameters)x[1] == ShaderParameters.InfoLogLength)
((int[])x[2])[0] = 1;
});
var log = new string(' ', 1024);
gl.WhenForAnyArgs(g => g.GetShaderInfoLog(Arg.Any<uint>(), Arg.Any<int>(), Arg.Any<int[]>(), ref log))
.Do(x =>
{
(x[3]) = "A";
});
var shader = new VertexShader(gl, "Foo");
// Act
var exception = Assert.Catch<ShaderCompilationException>(shader.Compile);
// Assert
Assert.IsNotNull(exception.CompilationResults);
Assert.AreEqual(false, exception.CompilationResults.Success);
Assert.AreEqual("A", exception.CompilationResults.Message);
}
