test(rs): init all grammar tests

Author: phodal

chapi-ast-rust/src/test/kotlin/chapi/ast/rustast/RustAnalyserTest.kt

@@ -1,6 +1,7 @@
 package chapi.ast.rustast
 
 import org.junit.jupiter.api.Test
+import java.io.File
 
 internal class RustAnalyserTest {
 
@@ -14,4 +15,14 @@ internal class RustAnalyserTest {
 
         val codeContainer = RustAnalyser().analysis(str, "test.rs")
     }
+
+    @Test
+    fun allGrammarUnderResources() {
+        val content = this::class.java.getResource("/grammar")!!
+        File(content.toURI()).walkTopDown().forEach {
+            if (it.isFile && it.extension == "rs") {
+                RustAnalyser().analysis(it.readText(), it.name)
+            }
+        }
+    }
 }

chapi-ast-rust/src/test/resources/grammar/comment.rs

@@ -0,0 +1,60 @@
+//! A doc comment that applies to the implicit anonymous module of this crate
+
+pub mod outer_module {
+
+    //!  - Inner line doc
+    //!! - Still an inner line doc (but with a bang at the beginning)
+
+    /*!  - Inner block doc */
+    /*!! - Still an inner block doc (but with a bang at the beginning) */
+
+    //   - Only a comment
+    ///  - Outer line doc (exactly 3 slashes)
+    //// - Only a comment
+
+    /*   - Only a comment */
+    /**  - Outer block doc (exactly) 2 asterisks */
+    /*** - Only a comment */
+
+    pub mod inner_module {}
+
+    pub mod nested_comments {
+        /* In Rust /* we can /* nest comments */ */ */
+
+        // All three types of block comments can contain or be nested inside
+        // any other type:
+
+        /*   /* */  /** */  /*! */  */
+        /*!  /* */  /** */  /*! */  */
+        /**  /* */  /** */  /*! */  */
+        pub mod dummy_item {}
+    }
+
+    pub mod degenerate_cases {
+        // empty inner line doc
+        //!
+
+        // empty inner block doc
+        /*!*/
+
+        // empty line comment
+        //
+
+        // empty outer line doc
+        ///
+
+        // empty block comment
+        /**/
+
+        pub mod dummy_item {}
+
+        // empty 2-asterisk block isn't a doc block, it is a block comment
+        /***/
+
+    }
+
+    /* The next one isn't allowed because outer doc comments
+       require an item that will receive the doc */
+
+    /// Where is my item?
+}