Initial data commit

Task/Binary-strings/Groovy/binary-strings-2.groovy

@@ -0,0 +1,59 @@
+import org.testng.Assert
+import org.testng.annotations.Test
+
+import java.nio.charset.StandardCharsets
+
+class MutableByteStringTest {
+    @Test
+    void replaceEmpty() {
+        MutableByteString str = new MutableByteString("hello".getBytes(StandardCharsets.UTF_8))
+        str.replace([] as byte[], ['-' as char] as byte[])
+
+        Assert.assertEquals(str.toStringUtf8(), "-h-e-l-l-o-")
+    }
+
+    @Test
+    void replaceMultiple() {
+        MutableByteString str = new MutableByteString("hello".getBytes(StandardCharsets.UTF_8))
+        str.replace(['l' as char] as byte[], ['1' as char, '2' as char, '3' as char] as byte[])
+
+        Assert.assertEquals(str.toStringUtf8(), "he123123o")
+    }
+
+    @Test
+    void toHexString() {
+        MutableByteString str = new MutableByteString("hello".getBytes(StandardCharsets.UTF_8))
+
+        Assert.assertEquals(str.toHexString(), "68656c6c6f")
+    }
+
+    @Test
+    void append() {
+        MutableByteString str = new MutableByteString("hello".getBytes(StandardCharsets.UTF_8))
+        str.append((',' as char) as byte)
+        str.append((' ' as char) as byte)
+        str.append(('w' as char) as byte)
+        str.append(('o' as char) as byte)
+        str.append(('r' as char) as byte)
+        str.append(('l' as char) as byte)
+        str.append(('d' as char) as byte)
+
+        Assert.assertEquals(str.toStringUtf8(), "hello, world")
+    }
+
+    @Test
+    void substring() {
+        MutableByteString str = new MutableByteString("hello, world".getBytes(StandardCharsets.UTF_8))
+
+        Assert.assertEquals(str.substring(0, 5).toStringUtf8(), "hello")
+        Assert.assertEquals(str.substring(7, 12).toStringUtf8(), "world")
+    }
+
+    @Test
+    void regionEquals(){
+        MutableByteString str = new MutableByteString("hello".getBytes(StandardCharsets.UTF_8))
+
+        Assert.assertTrue(str.regionEquals(0, new MutableByteString(['h' as char] as byte[]), 0, 1))
+        Assert.assertFalse(str.regionEquals(0, new MutableByteString(['h' as char] as byte[]), 0, 2))
+    }
+}