(yegor256#1239) Add extra tests for HeadOf

victornoel · Feb 5, 2020 · b54cae4 · b54cae4
1 parent 8bbef90
commit b54cae4
Showing 1 changed file with 14 additions and 0 deletions.
diff --git a/src/test/java/org/cactoos/io/HeadOfTest.java b/src/test/java/org/cactoos/io/HeadOfTest.java
@@ -51,6 +51,20 @@ public void readsHeadOfLongerInput() throws Exception {
         ).affirm();
     }
 
+    @Test
+    public void readsEmptyHeadOfInput() throws Exception {
+        new Assertion<>(
+            "must limit to 0 the number of read bytes",
+            new TextOf(
+                new HeadOf(
+                    new InputOf("readsEmptyHeadOfInput"),
+                    0
+                )
+            ),
+            new TextHasString("")
+        ).affirm();
+    }
+
     @Test
     public void readsHeadOfShorterInput() throws Exception {
         final String input = "readsHeadOfShorterInput";