/*
 * Copyright (C) 2008 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package tests.SQLite;

import SQLite.Blob;
import SQLite.Database;
import SQLite.Exception;
import SQLite.Stmt;
import dalvik.annotation.KnownFailure;
import dalvik.annotation.TestLevel;
import dalvik.annotation.TestTargetClass;
import dalvik.annotation.TestTargetNew;
import dalvik.annotation.TestTargets;

import junit.framework.TestCase;

import tests.support.DatabaseCreator;
import tests.support.Support_SQL;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

@TestTargetClass(Blob.class)
public class BlobTest extends SQLiteTest {
    
    private static Blob testBlob = null;
    
    private byte[] blobInput= null;
    
    private static InputStream file = null;
    
    private static Database db = null;
    
    private static Stmt st = null;
    
    public class MockBlob extends Blob {
        public void finalize() {
            try {
                super.finalize();
            } catch (Throwable exception) {
                fail("Test activity faild!");
            }
        }
    }
    
    public void setUp() throws java.lang.Exception {
        super.setUp();
        testBlob = new Blob();
        
        super.setUp();
        Support_SQL.loadDriver();
        db = new Database();
        db.open(dbFile.getPath(), 0);
             
        db.exec("create table B(id integer primary key, val blob)",null);
        db.exec("insert into B values(1, zeroblob(128))", null);
        db.exec("insert into B values(2, zeroblob(128))", null);
        db.exec("insert into B values(3, zeroblob(128))", null);
        
        // can not fill Blob with data at this point...
        /*
        File resources = Support_Resources.createTempFolder();
        BufferedReader r = null;
        try {
            Class c = Class.forName(this.getClass().getName());
            assertNotNull(c);
            file = Class.forName(this.getClass().getName())
                    .getResourceAsStream("/blob.c");
            r = new BufferedReader(new InputStreamReader(file));
        } catch (NullPointerException e) {
            fail("Should not throw NullPointerException reading file"
                    + e.getMessage());
        }
        OutputStream out = testBlob.getOutputStream();
        String s = null;
        while ((s = r.readLine()) != null) {
            out.write(r.readLine().getBytes());
        }
        out.flush();
        out.close();
        testBlob.close();
        */
    }

    public void tearDown() {
        
        testBlob.close();
        super.tearDown();
    }
    
    /**
     * @throws Exception 
     * @throws IOException 
     * @tests Blob#Blob()
     */
    @TestTargets ( {
    @TestTargetNew(
        level = TestLevel.NOT_FEASIBLE,
        notes = "db.open_blob is not supported also for Stmt, therefore cannot test Blobs",
        method = "Blob",
        args = {}
    ),
    @TestTargetNew(
        level = TestLevel.NOT_FEASIBLE,
        notes = "functional test",
        method = "getOutputStream",
        args = {}    
    ),
    @TestTargetNew(
        level = TestLevel.NOT_FEASIBLE,
        notes = "functional test",
        method = "getInputStream",
        args = {}
    )
    })
    @KnownFailure("db.open_blob is not supported.")
    public void testBlob() throws Exception, IOException {
        byte[] b = new byte[4];
        byte[] b128 = new byte[128];
        for (int i = 0; i < b128.length; i++) {
        b128[i] = (byte) i;
        }
        Blob blob = db.open_blob(dbFile.getPath(), "B", "val", 1, true);
        try {
            
        OutputStream os = blob.getOutputStream();
        os.write(b128);
        os.close();
        
        InputStream is = blob.getInputStream();
        is.skip(96);
        assertEquals(4,is.read(b));
        is.close();
        } finally {
        blob.close();
        }
    }

    /**
     * @tests Blob#finalize()
     */
    @TestTargetNew(
        level = TestLevel.NOT_FEASIBLE,
        notes = "Can not be checked. Should be tested in DX test package.",
        method = "finalize",
        args = {}
    )
    public void testFinalize() {
        
    }

    /**
     * @tests Blob.getInputStream()
     */
    @TestTargetNew(
        level = TestLevel.PARTIAL_COMPLETE,
        notes = "Exception test",
        method = "getInputStream",
        args = {}
    )
    public void testGetInputStream() {
        InputStream in = testBlob.getInputStream();
        
        try {
            in.read();
            fail("Exception not thrown for invalid Blob.");
        } catch (Throwable e) {
            //ok
        }   
    }

    /**
     * @tests Blob#getOutputStream()
     */
    @TestTargetNew(
        level = TestLevel.COMPLETE,
        notes = "Exception test",
        method = "getOutputStream",
        args = {}
    )
    public void testGetOutputStream() {
        OutputStream out = testBlob.getOutputStream();
       
        try {
           out.write(null);
           fail("Write operation unsupported");
        } catch (Throwable e) {
            assertEquals("Write operation unsupported", e.getMessage());
        }
    }

    /**
     * @tests Blob#close()
     */
    @TestTargetNew(
        level = TestLevel.NOT_FEASIBLE,
        notes = "not clear from spec what should happen when Blob is closed.",
        method = "close",
        args = {}
    )
//    @KnownFailure("Blob does not clean up inputStream.")
    public void testClose() {
    assertNotNull(testBlob);
       
    testBlob.close();
    // inputStream either null or some error occurs
    try {
        // TODO This does look a bit weird. Revisit later. 
        assertNull(testBlob.getInputStream());
    } catch (Throwable e) {
        //ok
    }
    }
}