Add simple test for glsl-new lexer

src/front/glsl_new/lex_tests.rs

@@ -0,0 +1,36 @@
+use super::lex::Lexer;
+use super::parser::Token;
+
+#[test]
+fn glsl_lex_simple() {
+    let source = "void main() {\n}";
+    let lex = Lexer::new(source);
+    let tokens: Vec<Token> = lex.collect();
+    assert_eq!(tokens.len(), 6);
+
+    let mut iter = tokens.iter();
+    assert_eq!(
+        format!("{:?}", iter.next().unwrap()),
+        "Void(TokenMetadata { line: 0, chars: 0..4 })"
+    );
+    assert_eq!(
+        format!("{:?}", iter.next().unwrap()),
+        "Identifier((TokenMetadata { line: 0, chars: 5..9 }, \"main\"))"
+    );
+    assert_eq!(
+        format!("{:?}", iter.next().unwrap()),
+        "LeftParen(TokenMetadata { line: 0, chars: 9..10 })"
+    );
+    assert_eq!(
+        format!("{:?}", iter.next().unwrap()),
+        "RightParen(TokenMetadata { line: 0, chars: 10..11 })"
+    );
+    assert_eq!(
+        format!("{:?}", iter.next().unwrap()),
+        "LeftBrace(TokenMetadata { line: 0, chars: 12..13 })"
+    );
+    assert_eq!(
+        format!("{:?}", iter.next().unwrap()),
+        "RightBrace(TokenMetadata { line: 1, chars: 0..1 })"
+    );
+}

src/front/glsl_new/mod.rs

@@ -3,6 +3,9 @@ use crate::{
 };
 
 mod lex;
+#[cfg(test)]
+mod lex_tests;
+
 use lex::Lexer;
 mod error;
 use error::ParseError;