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package com.google.refine.expr.functions.strings;

import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;

import org.testng.annotations.Test;

import com.google.refine.RefineTest;
import com.google.refine.expr.EvalError;
import com.google.refine.util.TestUtils;

public class ReplaceTests extends RefineTest {
    @Test
    public void serializeReplace() {
        String json = "{\"description\":\"Returns the string obtained by replacing f with r in s\",\"params\":\"string s, string or regex f, string r\",\"returns\":\"string\"}";
        TestUtils.isSerializedTo(new Replace(), json);
    }

    @Test
    public void testReplace() {
        assertTrue(invoke("replace") instanceof EvalError);
        assertTrue(invoke("replace", "test") instanceof EvalError);
        assertTrue(invoke("replace", "test", "test") instanceof EvalError);
        assertTrue(invoke("replace", "test", "test", null) instanceof EvalError);
        assertEquals(invoke("replace", "", "ripe", "green"), "");
        assertEquals(invoke("replace", "", "", ""), "");
        assertEquals(invoke("replace", "ripe banana", "ripe", "green"), "green banana");
        assertEquals(invoke("replace", "ripe banana", "ripe", ""), " banana");
        assertEquals(invoke("replace", "ripe banana", "wrong", "green"), "ripe banana");
        assertEquals(invoke("replace", "ripe ripe banana", "ripe", "green"), "green green banana");
    }
}

