jonbodner

public class CalculatorImpl implements Calculator {
  public CalculatorImpl() {
  }
  
  @Override
  public double process(String expression) {
    String[] tokens = expression.split(" ");
    Deque<String> operators = new ArrayDeque<>();
    Deque<Double> numbers = new ArrayDeque<>();
    try {

jonbodner

@Parameters(name = "{index}: CalculatorTest({0})={1}, throws {2}")
public static Collection<Object[]> data() {
  return Arrays.asList(new Object[][]{
    {"1 + 1", 2, null},
    {"1 + 1 + 1", 3, null},
    {"1–1", 0, null},
    {"1 * 1", 1, null},
    {"1 / 1", 1, null},
    {"( 1 + 1 )", 2, null},
    {"+", 0, new CalculatorException("Invalid expression: +")},

jonbodner

@RunWith(Parameterized.class)
public class CalculatorTest {
  @Parameters(name = "{index}: CalculatorTest({0})={1}, throws {2}")
  public static Collection<Object[]> data() {
    return Arrays.asList(new Object[][]{
      {"1 + 1", 2, null},
      {"1 + 1 + 1", 3, null},
      {"1–1", 0, null},
      {"1 * 1", 1, null},
      {"1 / 1", 1, null},

jonbodner

public class CalcControllerTest {

  @Test
  public void result() {
    CalcController c = new CalcController(new Calculator() {
      @Override
      public double process(String expression) {
        if (expression.equals("1 + 1")) {
          return 2;
        }

jonbodner

@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoApplicationTests {

    @Autowired
    ApplicationContext ac;

    @Test
    public void contextLoads() {
        Calculator calculator = ac.getBean(Calculator.class);

jonbodner

	<reporting>
		<plugins>
        	<plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
            	<reportSets>
                    <reportSet>
                        <reports>
     	                   <!-- select non-aggregate reports -->
                            <report>report</report>

jonbodner

        	<plugin>
                <groupId>org.jacoco</groupId>
                <artifactId>jacoco-maven-plugin</artifactId>
                <version>0.8.2</version>
            	<executions>
                    <execution>
                    	<goals>
                            <goal>prepare-agent</goal>
                        </goals>
                    </execution>

jonbodner

package com.example.demo;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class DemoApplicationTests {

jonbodner

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
	<packaging>jar</packaging>

jonbodner

package com.example.demo;

import com.example.demo.calculator.Calculator;
import com.example.demo.calculator.CalculatorImpl;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;

@SpringBootApplication
public class DemoApplication {