Merge branch 'master' of https://github.com/JonCook/tutorials

libraries-2/src/test/java/com/baeldung/handlebars/BasicUsageUnitTest.java

@@ -0,0 +1,109 @@
+package com.baeldung.handlebars;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import com.github.jknack.handlebars.Handlebars;
+import com.github.jknack.handlebars.Template;
+import com.github.jknack.handlebars.io.ClassPathTemplateLoader;
+import com.github.jknack.handlebars.io.TemplateLoader;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Map;
+import org.junit.Test;
+
+/**
+ * Showcases the tag usage and different template loading mechanisms.
+ *
+ * @author isaolmez
+ */
+public class BasicUsageUnitTest {
+
+    @Test
+    public void whenThereIsNoTemplateFile_ThenCompilesInline() throws IOException {
+        Handlebars handlebars = new Handlebars();
+        Template template = handlebars.compileInline("Hi {{this}}!");
+
+        String templateString = template.apply("Baeldung");
+
+        assertThat(templateString).isEqualTo("Hi Baeldung!");
+    }
+
+    @Test
+    public void whenParameterMapIsSupplied_thenDisplays() throws IOException {
+        Handlebars handlebars = new Handlebars();
+        Template template = handlebars.compileInline("Hi {{name}}!");
+        Map<String, String> parameterMap = new HashMap<>();
+        parameterMap.put("name", "Baeldung");
+
+        String templateString = template.apply(parameterMap);
+
+        assertThat(templateString).isEqualTo("Hi Baeldung!");
+    }
+
+    @Test
+    public void whenParameterObjectIsSupplied_ThenDisplays() throws IOException {
+        Handlebars handlebars = new Handlebars();
+        Template template = handlebars.compileInline("Hi {{name}}!");
+        Person person = new Person();
+        person.setName("Baeldung");
+
+        String templateString = template.apply(person);
+
+        assertThat(templateString).isEqualTo("Hi Baeldung!");
+    }
+
+    @Test
+    public void whenMultipleParametersAreSupplied_ThenDisplays() throws IOException {
+        Handlebars handlebars = new Handlebars();
+        Template template = handlebars.compileInline("Hi {{name}}! This is {{topic}}.");
+        Map<String, String> parameterMap = new HashMap<>();
+        parameterMap.put("name", "Baeldung");
+        parameterMap.put("topic", "Handlebars");
+
+        String templateString = template.apply(parameterMap);
+
+        assertThat(templateString).isEqualTo("Hi Baeldung! This is Handlebars.");
+    }
+
+    @Test
+    public void whenNoLoaderIsGiven_ThenSearchesClasspath() throws IOException {
+        Handlebars handlebars = new Handlebars();
+        Template template = handlebars.compile("greeting");
+        Person person = getPerson("Baeldung");
+
+        String templateString = template.apply(person);
+
+        assertThat(templateString).isEqualTo("Hi Baeldung!");
+    }
+
+    @Test
+    public void whenClasspathTemplateLoaderIsGiven_ThenSearchesClasspathWithPrefixSuffix() throws IOException {
+        TemplateLoader loader = new ClassPathTemplateLoader("/handlebars", ".html");
+        Handlebars handlebars = new Handlebars(loader);
+        Template template = handlebars.compile("greeting");
+        Person person = getPerson("Baeldung");
+
+        String templateString = template.apply(person);
+
+        assertThat(templateString).isEqualTo("Hi Baeldung!");
+    }
+
+    @Test
+    public void whenMultipleLoadersAreGiven_ThenSearchesSequentially() throws IOException {
+        TemplateLoader firstLoader = new ClassPathTemplateLoader("/handlebars", ".html");
+        TemplateLoader secondLoader = new ClassPathTemplateLoader("/templates", ".html");
+        Handlebars handlebars = new Handlebars().with(firstLoader, secondLoader);
+        Template template = handlebars.compile("greeting");
+        Person person = getPerson("Baeldung");
+
+        String templateString = template.apply(person);
+
+        assertThat(templateString).isEqualTo("Hi Baeldung!");
+    }
+
+    private Person getPerson(String name) {
+        Person person = new Person();
+        person.setName(name);
+        return person;
+    }
+}