adding business test

src/test/java/com/github/javafaker/BusinessTest.java

@@ -0,0 +1,24 @@
+package com.github.javafaker;
+
+import org.junit.Test;
+
+import static com.github.javafaker.matchers.IsStringWithContents.isStringWithContents;
+import static org.junit.Assert.assertThat;
+
+public class BusinessTest extends AbstractFakerTest {
+    @Test
+    public void creditCardNumber() {
+        assertThat(faker.business().creditCardNumber(), isStringWithContents());
+    }
+
+    @Test
+    public void creditCardType() {
+        assertThat(faker.business().creditCardType(), isStringWithContents());
+    }
+
+    @Test
+    public void creditCardExpiry() {
+        assertThat(faker.business().creditCardExpiry(), isStringWithContents());
+    }
+
+}