Method nameToId

test/simpledb/TupleDescTest.java:89–125

Unit test for TupleDesc.nameToId()

()

     * Unit test for TupleDesc.nameToId()
     */
    @Test public void nameToId() {
        int[] lengths = new int[] { 1, 2, 1000 };
        String prefix = "test";
        
        for (int len: lengths) {
            // Make sure you retrieve well-named fields
            TupleDesc td = Utility.getTupleDesc(len, prefix);
            for (int i = 0; i < len; ++i) {
                assertEquals(i, td.fieldNameToIndex(prefix + i));
            }
            
            // Make sure you throw exception for non-existent fields
            try {
                td.fieldNameToIndex("foo");
                Assert.fail("foo is not a valid field name");
            } catch (NoSuchElementException e) {
                // expected to get here
            }
            
            // Make sure you throw exception for null searches
            try {
                td.fieldNameToIndex(null);
                Assert.fail("null is not a valid field name");
            } catch (NoSuchElementException e) {
                // expected to get here
            }

            // Make sure you throw exception when all field names are null
            td = Utility.getTupleDesc(len);
            try {
                td.fieldNameToIndex(prefix);
                Assert.fail("no fields are named, so you can't find it");
            } catch (NoSuchElementException e) {
                // expected to get here
            }
        }
    }    

    /**
     * Unit test for TupleDesc.getSize()