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*/

package com.google.refine.tests.model;

import static org.mockito.Mockito.mock;

import java.io.IOException;
import java.io.StringWriter;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Properties;

import org.json.JSONException;
import org.json.JSONObject;
import org.slf4j.LoggerFactory;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

import com.google.refine.ProjectManager;
import com.google.refine.ProjectMetadata;
import com.google.refine.browsing.Engine;
import com.google.refine.browsing.RowVisitor;
import com.google.refine.expr.functions.FacetCount;
import com.google.refine.grel.Function;
import com.google.refine.io.FileProjectManager;
import com.google.refine.model.Cell;
import com.google.refine.model.Column;
import com.google.refine.model.ModelException;
import com.google.refine.model.Project;
import com.google.refine.model.Row;
import com.google.refine.operations.EngineDependentOperation;
import com.google.refine.operations.row.RowRemovalOperation;
import com.google.refine.tests.RefineTest;


public class CacheTests extends RefineTest {

    //{project=1718051861971, engine= ...}
    //engine={ "facets" : ..., "mode":"row-based"}}
    //facets = [{"type":"list","name":"row","columnName":"row","expression":"facetCount(value, 'value', 'row') > 1","omitBlank":false,"omitError":false,"selection":[],"selectBlank":false,"selectError":false,"invert":false}]

    // {project=1718051861971, engine=

    // Equivalent to duplicate facet on Column A with true selected
    static final String ENGINE_JSON_DUPLICATES = "{\"facets\":[{\"type\":\"list\",\"name\":\"facet A\",\"columnName\":\"Column A\",\"expression\":\"facetCount(value, 'value', 'Column A') > 1\",\"omitBlank\":false,\"omitError\":false,\"selection\":[{\"v\":{\"v\":true,\"l\":\"true\"}}],\"selectBlank\":false,\"selectError\":false,\"invert\":false}],\"mode\":\"row-based\"}}";

    @Override
    @BeforeTest
    public void init() {
        logger = LoggerFactory.getLogger(this.getClass());
    }

    // dependencies
    StringWriter writer;
    Project project;
    Properties options;
    JSONObject engine_config;
    Engine engine;
    Properties bindings;

    @BeforeMethod
    public void SetUp() throws JSONException, IOException, ModelException {
        writer = new StringWriter();
        
        Path dir = Files.createTempDirectory("openrefine-test-workspace-dir");
        FileProjectManager.initialize(dir.toFile());
        project = new Project();
        ProjectMetadata pm = new ProjectMetadata();
        pm.setName("TNG Test Project");
        ProjectManager.singleton.registerProject(project, pm);

        int index = project.columnModel.allocateNewCellIndex();
        Column column = new Column(index,"Column A");
        project.columnModel.addColumn(index, column, true);
        
        options = mock(Properties.class);
        engine = new Engine(project);
        engine_config = new JSONObject(ENGINE_JSON_DUPLICATES);
//        engine_config.getJSONArray("facets").getJSONObject(0).getJSONArray("selection").put(new JSONArray());
        engine.initializeFromJSON(engine_config);
        engine.setMode(Engine.Mode.RowBased);
        
        bindings = new Properties();
        bindings.put("project", project);
        
    }

    @AfterMethod
    public void TearDown() {
        writer = null;
        project = null;
        options = null;
    }

    /**
     * Test for issue 567.  Problem doesn't seem to occur when testing
     * interactively, but this demonstrates that the facet count cache
     * can get stale after row removal operations
     * 
     * @throws Exception
     */
    @Test
    public void testIssue567() throws Exception {
        for (int i = 0; i < 5; i++) {
            Row row = new Row(5);
            row.setCell(0, new Cell(i < 4 ? "a":"b", null));
            project.rows.add(row);
        }
        engine.getAllRows().accept(project, new CountingRowVisitor(5)) ;
        engine.getAllFilteredRows().accept(project, new CountingRowVisitor(4));
        Function fc = new FacetCount();
        Integer count = (Integer) fc.call(bindings, new Object[] {"a", "value", "Column A"});
        Assert.assertEquals(count.intValue(), 4);
        EngineDependentOperation op = new RowRemovalOperation(engine_config);
        op.createProcess(project, options).performImmediate();
        engine.getAllRows().accept(project, new CountingRowVisitor(1)) ;
        engine.getAllFilteredRows().accept(project, new CountingRowVisitor(0));
        count = (Integer) fc.call(bindings, new Object[] {"a", "value", "Column A"});
        Assert.assertEquals(count.intValue(), 0);
    }
    
    class CountingRowVisitor implements RowVisitor {

        private int count = 0;
        private int target;

        private CountingRowVisitor(int targetCount) {
            target = targetCount;
        }

        @Override
        public boolean visit(Project project, int rowIndex, Row row) {
            count++;
            return false;
        }

        @Override
        public void start(Project project) {
            count = 0; 
        }

        @Override
        public void end(Project project) {
            Assert.assertEquals(count, target); 
        }
    }
}

@@ -1612,37 +1612,8 @@
 on;%0A
-import java.io.StringWriter;%0A
 impo
@@ -3649,33 +3649,8 @@
 ies%0A
-    StringWriter writer;%0A
     
@@ -3863,54 +3863,8 @@
 n %7B%0A
-        writer = new StringWriter();%0A        %0A
     
@@ -4881,14 +4881,15 @@
     
-writer
+project
  = n
@@ -4893,39 +4893,62 @@
 = null;%0A        
-project
+options = null;%0A        engine
  = null;%0A       
@@ -4940,38 +4940,39 @@
 = null;%0A        
-option
+binding
 s = null;%0A    %7D%0A

Remove unused code