Jonathan Cook
110 lines
3.8 KiB
Java
110 lines
3.8 KiB
Java
package com.baeldung.handlebars;
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import static org.assertj.core.api.Assertions.assertThat;
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import com.github.jknack.handlebars.Handlebars;
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import com.github.jknack.handlebars.Template;
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import com.github.jknack.handlebars.io.ClassPathTemplateLoader;
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import com.github.jknack.handlebars.io.TemplateLoader;
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import java.io.IOException;
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import java.util.HashMap;
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import java.util.Map;
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import org.junit.Test;
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/**
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* Showcases the tag usage and different template loading mechanisms.
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*
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* @author isaolmez
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*/
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public class BasicUsageUnitTest {
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@Test
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public void whenThereIsNoTemplateFile_ThenCompilesInline() throws IOException {
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Handlebars handlebars = new Handlebars();
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Template template = handlebars.compileInline("Hi {{this}}!");
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String templateString = template.apply("Baeldung");
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assertThat(templateString).isEqualTo("Hi Baeldung!");
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}
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@Test
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public void whenParameterMapIsSupplied_thenDisplays() throws IOException {
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Handlebars handlebars = new Handlebars();
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Template template = handlebars.compileInline("Hi {{name}}!");
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Map<String, String> parameterMap = new HashMap<>();
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parameterMap.put("name", "Baeldung");
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String templateString = template.apply(parameterMap);
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assertThat(templateString).isEqualTo("Hi Baeldung!");
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}
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@Test
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public void whenParameterObjectIsSupplied_ThenDisplays() throws IOException {
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Handlebars handlebars = new Handlebars();
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Template template = handlebars.compileInline("Hi {{name}}!");
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Person person = new Person();
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person.setName("Baeldung");
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String templateString = template.apply(person);
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assertThat(templateString).isEqualTo("Hi Baeldung!");
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}
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@Test
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public void whenMultipleParametersAreSupplied_ThenDisplays() throws IOException {
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Handlebars handlebars = new Handlebars();
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Template template = handlebars.compileInline("Hi {{name}}! This is {{topic}}.");
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Map<String, String> parameterMap = new HashMap<>();
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parameterMap.put("name", "Baeldung");
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parameterMap.put("topic", "Handlebars");
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String templateString = template.apply(parameterMap);
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assertThat(templateString).isEqualTo("Hi Baeldung! This is Handlebars.");
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}
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@Test
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public void whenNoLoaderIsGiven_ThenSearchesClasspath() throws IOException {
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Handlebars handlebars = new Handlebars();
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Template template = handlebars.compile("greeting");
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Person person = getPerson("Baeldung");
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String templateString = template.apply(person);
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assertThat(templateString).isEqualTo("Hi Baeldung!");
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}
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@Test
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public void whenClasspathTemplateLoaderIsGiven_ThenSearchesClasspathWithPrefixSuffix() throws IOException {
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TemplateLoader loader = new ClassPathTemplateLoader("/handlebars", ".html");
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Handlebars handlebars = new Handlebars(loader);
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Template template = handlebars.compile("greeting");
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Person person = getPerson("Baeldung");
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String templateString = template.apply(person);
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assertThat(templateString).isEqualTo("Hi Baeldung!");
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}
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@Test
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public void whenMultipleLoadersAreGiven_ThenSearchesSequentially() throws IOException {
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TemplateLoader firstLoader = new ClassPathTemplateLoader("/handlebars", ".html");
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TemplateLoader secondLoader = new ClassPathTemplateLoader("/templates", ".html");
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Handlebars handlebars = new Handlebars().with(firstLoader, secondLoader);
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Template template = handlebars.compile("greeting");
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Person person = getPerson("Baeldung");
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String templateString = template.apply(person);
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assertThat(templateString).isEqualTo("Hi Baeldung!");
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}
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private Person getPerson(String name) {
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Person person = new Person();
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person.setName(name);
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return person;
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}
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}
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