LangUtilsTest.java

package com.constellio.data.utils;

import static org.assertj.core.api.Assertions.assertThat;

import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.junit.Test;

import com.constellio.data.utils.LangUtils.ListComparisonResults;
import com.constellio.data.utils.LangUtils.MapComparisonResults;
import com.constellio.data.utils.LangUtils.ModifiedEntry;
import com.constellio.sdk.tests.ConstellioTest;

public class LangUtilsTest extends ConstellioTest {

	@Test
	public void whenComparingListsThenCorrect()
			throws Exception {

		List<String> before = Arrays.asList("a", "a", "b", "b", "d");
		List<String> after = Arrays.asList("a", "c", "c", "d");

		ListComparisonResults<String> results = new LangUtils().compare(before, after);
		assertThat(results.getNewItems()).containsOnly("c").hasSize(1);
		assertThat(results.getRemovedItems()).containsOnly("b").hasSize(1);

		results = new LangUtils().compare(after, before);
		assertThat(results.getRemovedItems()).containsOnly("c").hasSize(1);
		assertThat(results.getNewItems()).containsOnly("b").hasSize(1);

	}

	@Test
	public void whenComparingMapsThenCorrect()
			throws Exception {

		Map<String, String> map1 = new HashMap<>();
		map1.put("a", "1");
		map1.put("b", "1");
		map1.put("c", "1");

		Map<String, String> map2 = new HashMap<>();
		map2.put("b", "1");
		map2.put("c", "2");
		map2.put("d", "3");

		MapComparisonResults<String, String> results = LangUtils.compare(map1, map2);
		assertThat(results.getNewEntries()).containsOnly("d");
		assertThat(results.getRemovedEntries()).containsOnly("a");
		assertThat(results.getModifiedEntries()).containsOnly(new ModifiedEntry<>("c", "1", "2"));

		results = LangUtils.compare(map2, map1);
		assertThat(results.getNewEntries()).containsOnly("a");
		assertThat(results.getRemovedEntries()).containsOnly("d");
		assertThat(results.getModifiedEntries()).containsOnly(new ModifiedEntry<>("c", "2", "1"));

	}

}