Unit Test AssertJ Object with Examples - AssertJ 155

Unit Test AssertJ Object with Examples – AssertJ 155

Unit Test AssertJ Object with Examples

介紹 containsAnyOf 、 containsAtIndex 、 containsSequence 、 containsNull 等方法,使用流式斷言,流暢地寫完驗證,不須再寫迴圈, AssertJ Object Unit Test with Examples 在許多測試驗證場景,提供開發者更流暢的驗證 API,驗證更直覺,本篇增加了範例,並透過單元測試來驗證產出結果。

檔案目錄

./
   +- src
       +- test
       |   +- org
       |       +- ruoxue
       |           +- spring_boot_168
       |               +- test
       |                   +- assertj
       |                       +- object
       |                           +- UnitTestAssertJObjectWithExamplesTest.java  

單元測試

Examples AssertJ Object Unit Test 斷言物件的主要目的是取得物件以進行斷言。

Fruit

建立 Fruit 類別,覆寫 toString ,定義屬性和方法,用來建立一個物件。

	@NoArgsConstructor
	@Getter
	@Setter
	public static class Fruit {
		private String name;
		private double quantity;
		private int type;

		public Fruit(String name, double quantity, int type) {
			this.name = name;
			this.quantity = quantity;
			this.type = type;
		}

		public String toString() {
			ToStringBuilder builder = new ToStringBuilder(this, ToStringStyle.JSON_STYLE);
			builder.appendSuper(super.toString());
			builder.append("name", name);
			builder.append("quantity", quantity);
			builder.append("type", type);
			return builder.toString();
		}
	}

containsAnyOf

驗證包含任一字串,若不成立,則會拋出 AssertionError 。

	@Test
	public void containsAnyOf() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsAnyOf("Litchi", "Pomelo");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsAnyOf("101", "99");
	}
{"name":"Litchi 101","quantity":1.7976931348623157E308,"type":1}

containsIgnoringCase

Examples AssertJ Object Unit Test 驗證不分大小寫包含物件,若不成立,則會拋出 AssertionError 。

	@Test
	public void containsIgnoringCase() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringCase("litchi");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringCase("CHI");
	}
{"name":"Litchi 101","quantity":1.7976931348623157E308,"type":1}

doesNotContainIgnoringCase

Examples AssertJ Object Unit Test 驗證不分大小寫不包含物件,若不成立,則會拋出 AssertionError 。

	@Test
	public void doesNotContainIgnoringCase() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).doesNotContainIgnoringCase("pomelo");
		assertThat(value).extracting("name").asInstanceOf(STRING).doesNotContainIgnoringCase("ELO");
	}
{"name":"Litchi 101","quantity":1.7976931348623157E308,"type":1}

containsIgnoringWhitespaces

Examples AssertJ Object Unit Test 驗證不分空白包含物件,若不成立,則會拋出 AssertionError 。

	@Test
	public void containsIgnoringWhitespaces() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringWhitespaces("Litchi ");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringWhitespaces(" 101");
	}
{"name":"Litchi 101","quantity":1.7976931348623157E308,"type":1}

containsIgnoringNewLines

Examples AssertJ Object Unit Test 驗證不分斷列包含物件,若不成立,則會拋出 AssertionError 。

	@Test
	public void containsIgnoringNewLines() {
		Object value = new Fruit("Litc\nhi 1\n01\n", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringNewLines("Litchi", "101");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringNewLines("chi", "101");
	}
{"name":"Litc\nhi 1\n01\n","quantity":1.7976931348623157E308,"type":1}

containsPattern

Examples Unit Test AssertJ Object 驗證符合正則條件的物件,若不成立,則會拋出 AssertionError 。

	@Test
	public void containsPattern() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsPattern("Li.c");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsPattern("1\\d1");
	}
{"name":"Litchi 101","quantity":1.7976931348623157E308,"type":1}

doesNotContainPattern

Examples Unit Test AssertJ Object 驗證不符合正則條件的物件,若不成立,則會拋出 AssertionError 。

	@Test
	public void doesNotContainPattern() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).doesNotContainPattern("Li.x");
		assertThat(value).extracting("name").asInstanceOf(STRING).doesNotContainPattern("1\\d9");
	}
{"name":"Litchi 101","quantity":1.7976931348623157E308,"type":1}

containsSequence

Examples Unit Test AssertJ Object 驗證依序包含物件,若不成立,則會拋出 AssertionError 。

	@Test
	public void containsSequence() {
		Object value = new Fruit("Litchi 101 Pomelo 99", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSequence("Litchi", " ", "101");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSequence(Arrays.asList("Litchi", " ", "101"));
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSequence("Pomelo", " ", "99");
	}
{"name":"Litchi 101 Pomelo 99","quantity":1.7976931348623157E308,"type":1}

containsSubsequence

Examples Unit Test AssertJ Object 驗證依序包含物件,若不成立,則會拋出 AssertionError 。

	@Test
	public void containsSubsequence() {
		Object value = new Fruit("Litchi 101 Pomelo 99", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSubsequence("Litchi", "Pomelo");
		assertThat(value).extracting("name").asInstanceOf(STRING)
				.containsSubsequence(Arrays.asList("Litchi", "Pomelo"));
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSubsequence("101", " ", "99");
	}
{"name":"Litchi 101 Pomelo 99","quantity":1.7976931348623157E308,"type":1}

UnitTestAssertJObjectWithExamplesTest.java

Examples Unit Test AssertJ Object 新增單元測試,驗證是否符合預期。

package org.ruoxue.spring_boot_168.test.assertj.object;

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

import java.util.Arrays;

import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.junit.jupiter.api.Test;

import lombok.Getter;
import lombok.NoArgsConstructor;
import lombok.Setter;

public class UnitTestAssertJObjectWithExamplesTest {

	@NoArgsConstructor
	@Getter
	@Setter
	public static class Fruit {
		private String name;
		private double quantity;
		private int type;

		public Fruit(String name, double quantity, int type) {
			this.name = name;
			this.quantity = quantity;
			this.type = type;
		}

		public String toString() {
			ToStringBuilder builder = new ToStringBuilder(this, ToStringStyle.JSON_STYLE);
			builder.appendSuper(super.toString());
			builder.append("name", name);
			builder.append("quantity", quantity);
			builder.append("type", type);
			return builder.toString();
		}
	}

	@Test
	public void containsAnyOf() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsAnyOf("Litchi", "Pomelo");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsAnyOf("101", "99");
	}

	@Test
	public void containsIgnoringCase() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringCase("litchi");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringCase("CHI");
	}

	@Test
	public void doesNotContainIgnoringCase() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).doesNotContainIgnoringCase("pomelo");
		assertThat(value).extracting("name").asInstanceOf(STRING).doesNotContainIgnoringCase("ELO");
	}

	@Test
	public void containsIgnoringWhitespaces() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringWhitespaces("Litchi ");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringWhitespaces(" 101");
	}

	@Test
	public void containsIgnoringNewLines() {
		Object value = new Fruit("Litc\nhi 1\n01\n", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringNewLines("Litchi", "101");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsIgnoringNewLines("chi", "101");
	}

	@Test
	public void containsPattern() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsPattern("Li.c");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsPattern("1\\d1");
	}

	@Test
	public void doesNotContainPattern() {
		Object value = new Fruit("Litchi 101", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).doesNotContainPattern("Li.x");
		assertThat(value).extracting("name").asInstanceOf(STRING).doesNotContainPattern("1\\d9");
	}

	@Test
	public void containsSequence() {
		Object value = new Fruit("Litchi 101 Pomelo 99", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSequence("Litchi", " ", "101");
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSequence(Arrays.asList("Litchi", " ", "101"));
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSequence("Pomelo", " ", "99");
	}

	@Test
	public void containsSubsequence() {
		Object value = new Fruit("Litchi 101 Pomelo 99", Double.MAX_VALUE, 1);
		System.out.println(value);
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSubsequence("Litchi", "Pomelo");
		assertThat(value).extracting("name").asInstanceOf(STRING)
				.containsSubsequence(Arrays.asList("Litchi", "Pomelo"));
		assertThat(value).extracting("name").asInstanceOf(STRING).containsSubsequence("101", " ", "99");
	}
}

心得分享

Unit Test AssertJ Object Example 斷言的基本方法是 assertThat 方法,提高了測試程式碼的可讀性,並且被設計為在主流 IDE 中易於使用,讓開發者將繁瑣的測試驗證過程,變為更簡單,善用 Examples Unit Test AssertJ Object 將有助於驗證效率的提升。

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