diff --git a/LanguageServer/src/main/resources/models/accounts.model b/LanguageServer/src/main/resources/models/accounts.model
new file mode 100644
index 0000000..16a2cf7
--- /dev/null
+++ b/LanguageServer/src/main/resources/models/accounts.model
@@ -0,0 +1,12 @@
+/*
+ * Hello World!
+ * これはコメントです。
+ */
+channel Signup {
+    out accounts(accounts: List, signup(name: Str)) = append(accounts, {"name": name})
+}
+
+// This is a single-line comment
+channel ChangeName(uid: Int) { // Describe // this line is contained by former comment.
+    out accounts.{uid}.name(n: Str, changeName(name)) = name
+}
\ No newline at end of file
diff --git a/LanguageServer/src/test/java/org/nittalab/dtram/languageserver/utils/TokenizerTest.java b/LanguageServer/src/test/java/org/nittalab/dtram/languageserver/utils/TokenizerTest.java
new file mode 100644
index 0000000..a0a21bb
--- /dev/null
+++ b/LanguageServer/src/test/java/org/nittalab/dtram/languageserver/utils/TokenizerTest.java
@@ -0,0 +1,31 @@
+package org.nittalab.dtram.languageserver.utils;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.nittalab.dtram.languageserver.model.Token;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import java.util.List;
+import java.util.logging.Logger;
+
+@DisplayName("Tokenizer Test")
+public class TokenizerTest {
+    private static final Logger logger = Logger.getLogger(TokenizerTest.class.getName());
+
+    @Test
+    public void test() {
+        try (InputStream is = getClass().getResourceAsStream("/models/accounts.model")) {
+            assert is != null : "Couldn't get testing resource!";
+            BufferedReader reader = new BufferedReader(new InputStreamReader(is));
+
+            Tokenizer tokenizer = new Tokenizer(reader);
+            List<Token> tokens = tokenizer.execute();
+            tokens.forEach(System.out::println);
+        } catch (IOException e) {
+            logger.severe(e.getMessage());
+        }
+    }
+}