Method testStringSubstr

test/org/apache/pig/test/TestStringUDFs.java:49–62

()

    private static final EvalFunc<String> stringSubstr_ = new SUBSTRING();

    @Test
    public void testStringSubstr() throws IOException {
        Tuple testTuple = Util.buildTuple(null, 0, 2);
        assertNull("null is null", stringSubstr_.exec(testTuple));

        testTuple = Util.buildTuple("", 0, 2);
        assertEquals("empty string", "", stringSubstr_.exec(testTuple));

        testTuple = Util.buildTuple("abcde", 1, 3);
        assertEquals("lowercase string", "bc", stringSubstr_.exec(testTuple));

        testTuple = Util.buildTuple("abc", 0, 15);
        assertEquals("uppercase string", "abc", stringSubstr_.exec(testTuple));
    }

    @Test
    public void testStringSubstr_BI_EQ_EI() throws IOException {