Improve tests

src/test/java/net/yetamine/sova/servlet/MockObject.java

@@ -21,7 +21,7 @@
 /**
  * A test object for adapting and yet useful for equality and identity tests.
  */
-public final class MockObject {
+final class MockObject {
 
     /** Value of the object. */
     private final Object value;

src/test/java/net/yetamine/sova/servlet/TestServletContextSymbol.java

@@ -33,10 +33,15 @@
  */
 public final class TestServletContextSymbol {
 
-    // Testing values
+    /** Value to be present under the key {@code "integer"}. */
     private static final Integer INTEGER_VALUE = Integer.valueOf(1024);
+    /** Value to be present under the key {@code "string"}. */
     private static final String STRING_VALUE = "hello";
 
+    /**
+     * Testing attribute source with both {@link #INTEGER_VALUE} and
+     * {@link #STRING_VALUE}.
+     */
     private static final ServletContext DATA;
     static {
         DATA = new MockServletContext();

src/test/java/net/yetamine/sova/servlet/TestServletRequestSymbol.java

@@ -33,10 +33,15 @@
  */
 public final class TestServletRequestSymbol {
 
-    // Testing values
+    /** Value to be present under the key {@code "integer"}. */
     private static final Integer INTEGER_VALUE = Integer.valueOf(1024);
+    /** Value to be present under the key {@code "string"}. */
     private static final String STRING_VALUE = "hello";
 
+    /**
+     * Testing attribute source with both {@link #INTEGER_VALUE} and
+     * {@link #STRING_VALUE}.
+     */
     private static final ServletRequest DATA;
     static {
         DATA = new MockServletRequest();

src/test/java/net/yetamine/sova/servlet/TestServletSymbol.java

@@ -31,11 +31,18 @@
  */
 public final class TestServletSymbol {
 
-    // Testing values
+    /** Value to be present under the key {@code "integer"}. */
     private static final Integer INTEGER_VALUE = Integer.valueOf(1024);
+    /** Value to be present under the key {@code "string"}. */
     private static final String STRING_VALUE = "hello";
+    /** Value to be present under the key {@code "mock"}. */
     private static final MockObject MOCK_VALUE = new MockObject("mock");
 
+    /**
+     * Testing attribute source with {@link #INTEGER_VALUE} and
+     * {@link #STRING_VALUE} as request attributes and {@link #MOCK_VALUE} as a
+     * context attribute.
+     */
     private static final ServletRequest DATA;
     static {
         final ServletContext context = new MockServletContext();
@@ -117,6 +124,7 @@ public void testYield() {
         Assert.assertEquals(r1.fallback().get(), i);
 
         final AdaptationResult<Integer> r2 = new ServletSymbol<>("string", p).yield(DATA);
+        Assert.assertEquals(r2.argument(), STRING_VALUE);
         Assert.assertNull(r2.get());
         Assert.assertEquals(r2.fallback().get(), i);