1 files changed, 77 insertions, 0 deletions
diff --git a/src/test/java/org/anarres/cpp/NumericValueTest.java b/src/test/java/org/anarres/cpp/NumericValueTest.java
new file mode 100644
index 0000000..847be79
--- /dev/null
+++ b/src/test/java/org/anarres/cpp/NumericValueTest.java
@@ -0,0 +1,77 @@
+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(out, value.doubleValue(), 0.01d);
+        assertEquals((float) out, value.floatValue(), 0.01f);
+        assertEquals((long) out, value.longValue());
+        assertEquals((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);
+
+    }
+}