Replace bun with junit-js for JS tests; fix inline validator generation bug (#31)

- Add junit-js 2.0.0 dependency with GraalVM exclusions to avoid version conflicts
- Add JUnit Vintage engine to run JUnit 4 tests under JUnit 5 Platform
- Configure Surefire to discover *TestSuite.java files
- Delete bun-based src/test/js/ directory (replaced by junit-js)
- Add JtdEsmJsTestSuite.java to run JS tests via @RunWith(JSRunner.class)
- Add boolean-schema.test.js and nested-elements-empty-focused.test.js
  - Tests run in GraalVM polyglot, no external JS runtime needed
- Fix EsmRenderer bug where inline validator functions were never emitted:
  - Add generateInlineFunctions() method to emit collected inline validators
  - Fix collision issue by using counter instead of hashCode for function names
  - Support nested elements/schemas that require multiple inline validators

Test results: 29 tests pass in jtd-esm-codegen (17 Java + 2 property + 10 JS)

Author: simbo1905

jtd-esm-codegen/pom.xml

@@ -27,6 +27,7 @@
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
         <maven.compiler.release>21</maven.compiler.release>
         <maven-shade-plugin.version>3.6.0</maven-shade-plugin.version>
+        <graaljs.version>24.1.2</graaljs.version>
     </properties>
 
     <dependencies>
@@ -63,6 +64,50 @@
             <version>1.9.3</version>
             <scope>test</scope>
         </dependency>
+        <!-- GraalVM Polyglot JS for in-process JavaScript execution -->
+        <dependency>
+            <groupId>org.graalvm.polyglot</groupId>
+            <artifactId>polyglot</artifactId>
+            <version>${graaljs.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.graalvm.polyglot</groupId>
+            <artifactId>js-community</artifactId>
+            <version>${graaljs.version}</version>
+            <type>pom</type>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- junit-js: JUnit runner for JavaScript tests via GraalVM polyglot (replaces bun) -->
+        <dependency>
+            <groupId>org.bitbucket.thinbus</groupId>
+            <artifactId>junit-js</artifactId>
+            <version>2.0.0</version>
+            <scope>test</scope>
+            <exclusions>
+                <!-- Exclude GraalVM deps to use project's 24.1.2 (bugfix of 24.1.0) -->
+                <exclusion>
+                    <groupId>org.graalvm.polyglot</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>org.graalvm.js</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+                <exclusion>
+                    <groupId>org.graalvm.truffle</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <!-- JUnit Vintage engine to run JUnit 4 @RunWith(JSRunner.class) tests under JUnit 5 -->
+        <dependency>
+            <groupId>org.junit.vintage</groupId>
+            <artifactId>junit-vintage-engine</artifactId>
+            <version>${junit.jupiter.version}</version>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
     <build>
@@ -87,6 +132,14 @@
                 <artifactId>maven-surefire-plugin</artifactId>
                 <configuration>
                     <argLine>-ea</argLine>
+                    <includes>
+                        <include>**/*Test.java</include>
+                        <include>**/*Tests.java</include>
+                        <include>**/*TestSuite.java</include>
+                    </includes>
+                    <systemPropertyVariables>
+                        <polyglot.engine.WarnInterpreterOnly>false</polyglot.engine.WarnInterpreterOnly>
+                    </systemPropertyVariables>
                 </configuration>
             </plugin>