package data.io;

import static org.junit.Assert.*;

import java.util.Iterator;

import org.apache.log4j.PropertyConfigurator;
import org.junit.BeforeClass;
import org.junit.Test;

import data.MVDataEntry;
import data.io.stub.StubDataReader;

public class SafeDataReaderTest {
	
	private static final String LOG_PROPERTIES_FILE = "conf/log4j.properties";
	
	@BeforeClass
	public static void setup() {
		PropertyConfigurator.configure(LOG_PROPERTIES_FILE);
	}

	@Test
	public void testNoErrors() {
		MVDataEntry testEntries[] = new MVDataEntry[5];
		for (int i=0;i<5;i++) {
			testEntries[i] = new MVDataEntry("line"+(i+1));
			testEntries[i].put("attr1", "value"+(i+1));
		}		
		
		StubDataReader src = new StubDataReader("testNoSkipErrors_src", testEntries);
		StubDataReader expected = new StubDataReader("testNoSkipErrors_expected", testEntries);
		
		SafeDataReader reader = new SafeDataReader(src, false);
		
		// Test twice to check if asking a new iterator "rewinds" correctly
		for (int i=0;i<2;i++) {
			//System.out.println("Loop " + (i+1));
			Iterator<MVDataEntry> readerIt = reader.iterator();
			for ( MVDataEntry e: expected) {
				assertTrue(readerIt.hasNext());
				MVDataEntry r = readerIt.next();
				//System.out.println(e + " / " + r);
				assertEquals(e, r);
			}
			assertFalse(readerIt.hasNext());
		}
	}

	//TODO Real tests with messy input readers (null values, exception, hasNext/next() incoherence)
}