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package org.anarres.cpp;
import java.io.IOException;
import org.junit.Test;
import static org.anarres.cpp.Token.*;
import static org.junit.Assert.*;
/**
*
* @author shevek
*/
public class NumericValueTest {
private Token testNumericValue(String in) throws IOException, LexerException {
StringLexerSource s = new StringLexerSource(in);
Token tok = s.token();
System.out.println("Token is " + tok);
assertEquals(NUMBER, tok.getType());
Token eof = s.token();
assertEquals("Didn't get EOF, but " + tok, EOF, eof.getType());
return tok;
}
private void testNumericValue(String in, double out) throws IOException, LexerException {
System.out.println("Testing '" + in + "' -> " + out);
Token tok = testNumericValue(in);
assertEquals(in, tok.getText());
NumericValue value = (NumericValue) tok.getValue();
assertEquals("Double mismatch", out, value.doubleValue(), 0.01d);
assertEquals("Float mismatch", (float) out, value.floatValue(), 0.01f);
assertEquals("Long mismatch", (long) out, value.longValue());
assertEquals("Integer mismatch", (int) out, value.intValue());
}
@Test
public void testNumericValue() throws Exception {
// Zero
testNumericValue("0", 0);
// Decimal
testNumericValue("1", 1);
testNumericValue("1L", 1);
testNumericValue("12", 12);
testNumericValue("12L", 12);
// Hex
testNumericValue("0xf", 0xf);
testNumericValue("0xfL", 0xf);
testNumericValue("0x12", 0x12);
testNumericValue("0x12L", 0x12);
// Negative
// testNumericValue("-0", 0);
// testNumericValue("-1", -1);
// Negative hex
// testNumericValue("-0x56", -0x56);
// testNumericValue("-0x102", -0x102);
// Octal and negative octal
testNumericValue("0673", Integer.parseInt("673", 8));
// testNumericValue("-0673", Integer.parseInt("-673", 8));
// Floating point
testNumericValue(".0", 0);
testNumericValue(".00", 0);
testNumericValue("0.", 0);
testNumericValue("0.0", 0);
testNumericValue("00.0", 0);
testNumericValue("00.", 0);
// Sign on exponents
testNumericValue("1e1", 1e1);
// testNumericValue("-1e1", -1e1);
testNumericValue("1e-1", 1e-1);
// Hex numbers with decimal exponents
testNumericValue("0x12e3", 0x12e3);
testNumericValue("0x12p3", 0x12p3);
// Octal numbers with decimal exponents
testNumericValue("012e3", 012e3); // Fails
testNumericValue("067e4", 067e4); // Fails
// Issues a warning.
try {
testNumericValue("097", 97);
fail("No warning.");
} catch (LexerException e) {
}
}
}
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