Antlr4.Test.StringTemplate.TestImports.TestImportDir C# (CSharp) Метод

        public void TestImportDir()
        {
            /*
            dir1
                g.stg has a() that imports dir2 with absolute path
            dir2
                a.st
                b.st
             */
            string dir1 = Path.Combine(tmpdir, "dir1");
            string dir2 = Path.Combine(tmpdir, "dir2");
            string gstr =
                "import \"" + dir2 + "\"\n" +
                "a() ::= <<dir1 a>>\n";
            writeFile(dir1, "g.stg", gstr);

            string a = "a() ::= <<dir2 a>>\n";
            string b = "b() ::= <<dir2 b>>\n";
            writeFile(dir2, "a.st", a);
            writeFile(dir2, "b.st", b);

            TemplateGroup group = new TemplateGroupFile(Path.Combine(dir1, "g.stg"));
            Template st = group.GetInstanceOf("b"); // visible only if import worked
            string expected = "dir2 b";
            string result = st?.Render();
            Assert.AreEqual(expected, result);
        }