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Add regression test for #670

This commit is contained in:
Sam Harwell 2014-09-25 21:47:25 -05:00
parent 7f577d9209
commit 3137672390
1 changed files with 20 additions and 0 deletions
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20
tool/test/org/antlr/v4/test/TestCompositeGrammars.java
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@ -797,4 +797,24 @@ public class TestCompositeGrammars extends BaseTest {
assertEquals("", found);
assertNull(stderrDuringParse);
}
/**
* This is a regression test for antlr/antlr4#670 "exception when importing
* grammar".
* https://github.com/antlr/antlr4/issues/670
*/
@Test
public void testImportLargeGrammar() throws Exception {
String slave = load("Java.g4", "UTF-8");
String master =
"grammar NewJava;\n" +
"import Java;\n";
System.out.println("dir "+tmpdir);
mkdir(tmpdir);
writeFile(tmpdir, "Java.g4", slave);
String found = execParser("NewJava.g4", master, "NewJavaParser", "NewJavaLexer", "compilationUnit", "package Foo;", debug);
assertEquals("", found);
assertNull(stderrDuringParse);
}
}