test: add test for shader preprocess

Cargo.lock

@@ -789,7 +789,9 @@ name = "librashader-preprocess"
 version = "0.1.0-beta.16"
 dependencies = [
  "encoding_rs",
+ "glob",
  "librashader-common",
+ "librashader-presets",
  "nom",
  "rustc-hash",
  "thiserror",

librashader-preprocess/Cargo.toml

@@ -21,3 +21,7 @@ encoding_rs = "0.8.31"
 [features]
 default = [ "line_directives" ]
 line_directives = []
+
+[dev-dependencies]
+glob = "0.3.1"
+librashader-presets = { version = "0.1.0-beta.16", path = "../librashader-presets"}

librashader-preprocess/tests/parse_all.rs

@@ -0,0 +1,19 @@
+use glob::glob;
+use librashader_preprocess::{PreprocessError, ShaderSource};
+use librashader_presets::ShaderPreset;
+#[test]
+fn preprocess_all_slang_presets_parsed() {
+    for entry in glob("../test/slang-shaders/**/*.slangp").unwrap() {
+        if let Ok(path) = entry {
+            if let Ok(preset) = ShaderPreset::try_parse(&path) {
+                for shader in preset.shaders {
+                    ShaderSource::load(&shader.name).expect(&format!(
+                        "Failed to preprocess shader {} from preset {}",
+                        shader.name.display(),
+                        path.display()
+                    ));
+                }
+            }
+        }
+    }
+}