import org.junit.Test;

import static org.junit.Assert.assertTrue;

/**
 * test class for Percolation.java
 */
public class PercolationTest {

    @Test
    public void testOpen() throws Exception {
        System.out.println("testOpen start");
        assertTrue (true);

    }

    @org.junit.Test
    public void testPercolates() throws Exception {

    }
}

@@ -17,16 +17,106 @@
 .Test;%0A%0A
+import static org.junit.Assert.assertFalse;%0Aimport static org.junit.Assert.assertNotNull;%0A
 import s
@@ -332,36 +332,223 @@
 %22);%0A
-        assertTrue (true
+%0A        Percolation percolation = new Percolation(8);%0A        assertNotNull(percolation);%0A        percolation.open(1,2);%0A        assertTrue(percolation.isOpen(1,2));%0A        assertFalse(percolation.isOpen(2,1)
 );%0A%0A
+%0A
     
@@ -555,26 +555,16 @@
 %7D%0A%0A    @
-org.junit.
 Test%0A   

update percolation tests