YamlSequence.size() and unit tests

src/main/java/com/amihaiemil/camel/ReadYamlSequence.java

@@ -77,4 +77,13 @@ public String string(final int index) {
         return null;
     }
 
+    @Override
+    public int size() {
+        int size = 0;
+        for(final YamlLine line : this.lines) {
+            size = size + 1;
+        }
+        return size;
+    }
+
 }

src/main/java/com/amihaiemil/camel/RtYamlSequence.java

@@ -126,4 +126,9 @@ public String indent(final int indentation) {
         printed = printed.substring(0, printed.length() - 1);
         return printed;
     }
+
+    @Override
+    public int size() {
+        return this.nodes.size();
+    }
 }

src/main/java/com/amihaiemil/camel/StrictYamlSequence.java

@@ -115,4 +115,9 @@ public String toString() {
     public String indent(final int indentation) {
         return this.decorated.indent(indentation);
     }
+
+    @Override
+    public int size() {
+        return this.decorated.size();
+    }
 }

src/main/java/com/amihaiemil/camel/YamlSequence.java

@@ -8,6 +8,13 @@
  */
 public interface YamlSequence extends YamlNode {
 
+    /**
+     * The number of Yaml elements (scalars, mappings and sequences) found in
+     * this sequence.
+     * @return Integer.
+     */
+    int size();
+
     /**
      * Get the Yaml mapping  from the given index.
      * @param index Integer index.

src/test/java/com/amihaiemil/camel/ReadYamlSequenceTest.java

@@ -68,4 +68,23 @@ public void returnsYamlMappingFromIndex(){
             alfa.yamlMapping("alfa").string("key"), Matchers.equalTo("value")
         );
     }
+
+    /**
+     * ReadYamlSequence can return its size.
+     */
+    @Test
+    public void returnsSize(){
+        final List<YamlLine> lines = new ArrayList<>();
+        lines.add(new RtYamlLine("- ", 0));
+        lines.add(new RtYamlLine("  beta: somethingElse", 1));
+        lines.add(new RtYamlLine("- scalar", 2));
+        lines.add(new RtYamlLine("- ", 3));
+        lines.add(new RtYamlLine("  alfa: ", 4));
+        lines.add(new RtYamlLine("    fourth: some", 5));
+        lines.add(new RtYamlLine("    key: value", 6));
+        final YamlSequence sequence = new ReadYamlSequence(
+            new RtYamlLines(lines)
+        );
+        MatcherAssert.assertThat(sequence.size(), Matchers.is(3));
+    }
 }

src/test/java/com/amihaiemil/camel/RtYamlSequenceTest.java

@@ -256,6 +256,19 @@ public void prettyPrintsComplexYamlSequence() throws Exception {
         MatcherAssert.assertThat(seq.toString(), Matchers.equalTo(expected));
     }
 
+    /**
+     * RtYamlSequence can return its size.
+     */
+    @Test
+    public void returnsSize(){
+        List<YamlNode> nodes = new LinkedList<>();
+        nodes.add(new Scalar("test"));
+        nodes.add(Mockito.mock(YamlMapping.class));
+        nodes.add(new Scalar("mihai"));
+        YamlSequence seq = new RtYamlSequence(nodes);
+        MatcherAssert.assertThat(seq.size(), Matchers.is(3));
+    }
+
     /**
      * Read a test resource file's contents.
      * @param fileName File to read.

src/test/java/com/amihaiemil/camel/StrictYamlSequenceTest.java

@@ -110,7 +110,7 @@ public void returnsSize() {
         );
 
         MatcherAssert.assertThat(
-            sequence.children().size(),
+            sequence.size(),
             Matchers.equalTo(2)
         );
     }