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improve test

This commit is contained in:
parrt 2016-12-10 10:32:18 -08:00
parent 2053143665
commit 35e02997f2
1 changed files with 8 additions and 1 deletions
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9
runtime-testsuite/test/org/antlr/v4/test/runtime/java/api/TestExpectedTokens.java
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@ -93,6 +93,8 @@ public class TestExpectedTokens extends BaseJavaTest {
assertEquals("{A, B}", tokens.toString(g.getTokenNames()));
}
// Test for https://github.com/antlr/antlr4/issues/1480
// can't reproduce
@Test public void testFollowIncludedInLeftRecursiveRule() throws Exception {
String gtext =
"grammar T;\n" +
@ -133,11 +135,16 @@ public class TestExpectedTokens extends BaseJavaTest {
// String dot = gen.getDOT(atn.states.get(2), g.getRuleNames(), false);
// System.out.println(dot);
// Simulate call stack after input '(x'
// Simulate call stack after input '(x' from rule s
ParserRuleContext callStackFrom_s = new ParserRuleContext(null, 4);
ParserRuleContext callStackFrom_expr = new ParserRuleContext(callStackFrom_s, 9);
int afterID = 14;
IntervalSet tokens = atn.getExpectedTokens(afterID, callStackFrom_expr);
assertEquals("{R, PLUS}", tokens.toString(g.getTokenNames()));
// Simulate call stack after input '(x' from within rule expr
callStackFrom_expr = new ParserRuleContext(null, 9);
tokens = atn.getExpectedTokens(afterID, callStackFrom_expr);
assertEquals("{R, PLUS}", tokens.toString(g.getTokenNames()));
}
}