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package com.google.refine.operations.column;

import static org.testng.Assert.assertThrows;

import java.io.Serializable;

import com.fasterxml.jackson.databind.node.TextNode;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeSuite;
import org.testng.annotations.Test;

import com.google.refine.RefineTest;
import com.google.refine.expr.EvalError;
import com.google.refine.model.AbstractOperation;
import com.google.refine.model.Project;
import com.google.refine.operations.OperationDescription;
import com.google.refine.operations.OperationRegistry;
import com.google.refine.util.ParsingUtilities;
import com.google.refine.util.TestUtils;

public class ColumnRenameOperationTests extends RefineTest {

    protected Project project;

    @BeforeMethod
    public void setUpInitialState() {
        project = createProject(new String[] { "foo", "bar", "hello" },
                new Serializable[][] {
                        { "v1", "a", "d" },
                        { "v3", "a", "f" },
                        { "", "a", "g" },
                        { "", "b", "h" },
                        { new EvalError("error"), "a", "i" },
                        { "v1", "b", "j" }
                });
    }

    @BeforeSuite
    public void setUp() {
        OperationRegistry.registerOperation(getCoreModule(), "column-rename", ColumnRenameOperation.class);
    }

    @Test
    public void serializeColumnRenameOperation() throws Exception {
        String json = "{\"op\":\"core/column-rename\","
                + "\"description\":" + new TextNode(OperationDescription.column_rename_brief("old name", "new name")).toString() + ","
                + "\"oldColumnName\":\"old name\","
                + "\"newColumnName\":\"new name\"}";
        AbstractOperation op = ParsingUtilities.mapper.readValue(json, AbstractOperation.class);
        TestUtils.isSerializedTo(op, json);
    }

    @Test
    public void testValidate() {
        ColumnRenameOperation noOldName = new ColumnRenameOperation(null, "newfoo");
        assertThrows(IllegalArgumentException.class, () -> noOldName.validate());
        ColumnRenameOperation noNewName = new ColumnRenameOperation("foo", null);
        assertThrows(IllegalArgumentException.class, () -> noNewName.validate());
    }

    @Test
    public void testRename() throws Exception {
        ColumnRenameOperation SUT = new ColumnRenameOperation("foo", "newfoo");

        runOperation(SUT, project);

        Project expected = createProject(
                new String[] { "newfoo", "bar", "hello" },
                new Serializable[][] {
                        { "v1", "a", "d" },
                        { "v3", "a", "f" },
                        { "", "a", "g" },
                        { "", "b", "h" },
                        { new EvalError("error"), "a", "i" },
                        { "v1", "b", "j" },
                });
        assertProjectEquals(project, expected);
    }
}
