Support inline examples (:content_model: simple)

Author: abelsromero

asciidoctor-parser-doxia-module/src/main/java/org/asciidoctor/maven/site/parser/processors/ExampleNodeProcessor.java

@@ -50,12 +50,22 @@ public void process(StructuralNode node) {
 
         final List<StructuralNode> blocks = node.getBlocks();
         if (!blocks.isEmpty()) {
-            sink.division(SinkAttributes.of(STYLE, Styles.EXAMPLE));
-            blocks.forEach(this::sink);
-            sink.division_();
+            divWrap(sink, node, () -> blocks.forEach(this::sink));
+        } else {
+            // For :content_model: simple (inline)
+            // https://docs.asciidoctor.org/asciidoc/latest/blocks/example-blocks/#example-style-syntax
+            final String content = (String) node.getContent();
+            if (isNotBlank(content)) {
+                divWrap(sink, node, () -> sink.text(content));
+            }
         }
 
         sink.division_();
+    }
 
+    void divWrap(Sink sink, StructuralNode node, Runnable consumer) {
+        sink.division(SinkAttributes.of(STYLE, Styles.EXAMPLE));
+        consumer.run();
+        sink.division_();
     }
 }

asciidoctor-parser-doxia-module/src/main/java/org/asciidoctor/maven/site/parser/processors/Styles.java

@@ -16,6 +16,7 @@ class Styles {
         "border-color: #e0e0dc",
         "border: 1px solid #e6e6e6",
         "box-shadow: 0 1px 4px #e0e0dc",
+        "margin-bottom: 1.25em",
         "padding: 1.25em"
     ).collect(Collectors.joining("; "));
 }

asciidoctor-parser-doxia-module/src/test/java/org/asciidoctor/maven/site/parser/processors/ExampleNodeProcessorTest.java

@@ -10,6 +10,7 @@
 import org.asciidoctor.ast.StructuralNode;
 import org.asciidoctor.maven.site.parser.NodeProcessor;
 import org.asciidoctor.maven.site.parser.processors.test.NodeProcessorTest;
+import org.junit.jupiter.api.Nested;
 import org.junit.jupiter.api.Test;
 
 import static org.asciidoctor.maven.site.parser.processors.test.Html.*;
@@ -20,7 +21,7 @@
 class ExampleNodeProcessorTest {
 
     public static final String EXAMPLE_TITLE_OPENING = "<div style=\"color: #7a2518; margin-bottom: .25em\">";
-    public static final String EXAMPLE_CONTENT_OPENING = "<div style=\"background: #fffef7; border-color: #e0e0dc; border: 1px solid #e6e6e6; box-shadow: 0 1px 4px #e0e0dc; padding: 1.25em\">";
+    public static final String EXAMPLE_CONTENT_OPENING = "<div style=\"background: #fffef7; border-color: #e0e0dc; border: 1px solid #e6e6e6; box-shadow: 0 1px 4px #e0e0dc; margin-bottom: 1.25em; padding: 1.25em\">";
 
     private Asciidoctor asciidoctor;
     private NodeProcessor nodeProcessor;
@@ -172,4 +173,41 @@ private String process(String content) {
 
         return removeLineBreaks(sinkWriter.toString());
     }
+
+    @Nested
+    class WithSimpleContentModel {
+
+        @Test
+        void should_convert_minimal_example() {
+            String content = "= Tile\n\n" + "== Section\n\n" +
+                "[example]\n" +
+                "SomeText";
+
+            String html = process(content);
+
+            // Content is directly embedded instead of delegated to paragraph processor
+            assertThat(html)
+                .isEqualTo(div(
+                    EXAMPLE_CONTENT_OPENING +
+                        "SomeText" +
+                        "</div>"));
+        }
+
+        @Test
+        void should_convert_minimal_example_with_title() {
+            String content = "= Tile\n\n" + "== Section\n\n" +
+                ".Optional title\n" +
+                "[example]\n" +
+                "SomeText";
+
+            String html = process(content);
+
+            assertThat(html)
+                .isEqualTo(div(
+                    EXAMPLE_TITLE_OPENING + "Example 1. Optional title</div>" +
+                        EXAMPLE_CONTENT_OPENING +
+                        "SomeText" +
+                        "</div>"));
+        }
+    }
 }