Shader: Add lexer tests

src/Nazara/Shader/ShaderLangLexer.cpp

@@ -530,8 +530,6 @@ namespace Nz::ShaderLang
 			empty = false;
 		}
 
-		ss << '\n';
-
 		return std::move(ss).str();
 	}
 }

tests/Engine/Shader/LexerTests.cpp

@@ -0,0 +1,38 @@
+#include <Engine/Shader/ShaderUtils.hpp>
+#include <Nazara/Core/File.hpp>
+#include <Nazara/Core/StringExt.hpp>
+#include <Nazara/Shader/ShaderBuilder.hpp>
+#include <Nazara/Shader/ShaderLangLexer.hpp>
+#include <catch2/catch.hpp>
+#include <cctype>
+
+TEST_CASE("lexer", "[Shader]")
+{
+	SECTION("Simple code")
+	{
+		std::string_view nzslSource = R"(
+[nzsl_version("1.0")]
+module;
+
+[entry(frag)]
+fn main()
+{
+	let vec = vec4[f32](0.0, 1.0, 2.0, 3.0);
+	let i = 42;
+	let value = vec.xyz;
+}
+)";
+
+		std::vector<Nz::ShaderLang::Token> tokens = Nz::ShaderLang::Tokenize(nzslSource);
+		CHECK(Nz::ShaderLang::ToString(tokens) == R"(OpenSquareBracket Identifier(nzsl_version) OpenParenthesis StringValue("1.0") ClosingParenthesis ClosingSquareBracket
+Module Semicolon
+OpenSquareBracket Identifier(entry) OpenParenthesis Identifier(frag) ClosingParenthesis ClosingSquareBracket
+FunctionDeclaration Identifier(main) OpenParenthesis ClosingParenthesis
+OpenCurlyBracket
+Let Identifier(vec) Assign Identifier(vec4) OpenSquareBracket Identifier(f32) ClosingSquareBracket OpenParenthesis FloatingPointValue(0) Comma FloatingPointValue(1) Comma FloatingPointValue(2) Comma FloatingPointValue(3) ClosingParenthesis Semicolon
+Let Identifier(i) Assign IntegerValue(42) Semicolon
+Let Identifier(value) Assign Identifier(vec) Dot Identifier(xyz) Semicolon
+ClosingCurlyBracket
+EndOfStream)");
+	}
+}