tests(parser): add token-ASTData-mapper.test, #38

tests/parser/token-ASTData-mapper.test.ts

@@ -0,0 +1,40 @@
+import { ELR, Lexer } from "../../src";
+
+describe("ensure TNode's data is generated", () => {
+  test("ParserBuilder", () => {
+    const { parser } = new ELR.ParserBuilder({
+      lexer: new Lexer.Builder().define({ a: /a/ }).build(),
+    })
+      .data("")
+      .mapper({
+        a: (token) => token.content,
+      })
+      .define({ entry: "a a a" })
+      .build({ entry: "entry" });
+
+    const res = parser.parseAll("aaa");
+    expect(res.accept).toBe(true);
+
+    if (res.accept) {
+      expect(res.buffer[0].asNT().children[0].asT().data).toBe("a");
+    }
+  });
+  test("AdvancedBuilder", () => {
+    const { parser } = new ELR.AdvancedBuilder({
+      lexer: new Lexer.Builder().define({ a: /a/ }).build(),
+    })
+      .data("")
+      .mapper({
+        a: (token) => token.content,
+      })
+      .define({ entry: "a a a" })
+      .build({ entry: "entry" });
+
+    const res = parser.parseAll("aaa");
+    expect(res.accept).toBe(true);
+
+    if (res.accept) {
+      expect(res.buffer[0].asNT().children[0].asT().data).toBe("a");
+    }
+  });
+});