(#1035) org.cactoos.io.Joined: add a Ctor of Iterable<Input>

src/main/java/org/cactoos/io/Joined.java

@@ -40,15 +40,25 @@ public final class Joined implements Input {
      */
     private final Iterable<Input> inputs;
 
+    /**
+     * Ctor.
+     * @param inputs Iterable of inputs
+     */
+    public Joined(final Iterable<Input> inputs) {
+        this.inputs = inputs;
+    }
+
     /**
      * Ctor.
      * @param first First input
      * @param rest The rest
      */
     public Joined(final Input first, final Input... rest) {
-        this.inputs = new org.cactoos.iterable.Joined<>(
-            first,
-            new IterableOf<>(rest)
+        this(
+            new org.cactoos.iterable.Joined<>(
+                first,
+                new IterableOf<>(rest)
+            )
         );
     }
 

src/test/java/org/cactoos/io/JoinedTest.java

@@ -24,6 +24,7 @@
 package org.cactoos.io;
 
 import java.io.IOException;
+import org.cactoos.iterable.IterableOf;
 import org.cactoos.text.TextOf;
 import org.hamcrest.MatcherAssert;
 import org.junit.Test;
@@ -52,4 +53,24 @@ public void joinsOk() throws IOException {
             new TextHasString("firstsecondthird")
         );
     }
+
+    /**
+     * Must join inputs of the iterable in the given order.
+     */
+    @Test
+    public void fromIterable() {
+        MatcherAssert.assertThat(
+            "Cannot join iterable of inputs",
+            new TextOf(
+                new Joined(
+                    new IterableOf<>(
+                        new InputOf("ab"),
+                        new InputOf("cde"),
+                        new InputOf("fghi")
+                    )
+                )
+            ),
+            new TextHasString("abcdefghi")
+        );
+    }
 }