Adjust tests to match WGSL spec on number literals

Suffixes are not type names and currently only a plain `u` is supported
for uints. More specifically, `i` and `f` suffixes or suffixes with
widths in bits like `u32` are not supported at the moment.

src/front/wgsl/lexer.rs

@@ -677,7 +677,12 @@ fn test_tokens() {
  Token::Number {
  value: "2",
  ty: 'u',
- width: "3",
+ width: "",
+ },
+ Token::Number {
+ value: "3",
+ ty: 'i',
+ width: "",
  },
  Token::Word("o"),
  ],
@@ -688,9 +693,9 @@ fn test_tokens() {
  Token::Number {
  value: "2.4",
  ty: 'f',
- width: "44",
+ width: "",
  },
- Token::Word("po"),
+ Token::Word("f44po"),
  ],
  );
  sub_test(

src/front/wgsl/tests.rs

@@ -88,7 +88,7 @@ fn parse_type_inference() {
  fn foo() {
  let a = 2u;
  let b: u32 = a;
- var x = 3f32;
+ var x = 3.;
  var y = vec2<f32>(1, 2);
  }",
  )