Merge pull request eugenp#235 from vrajeshjayswal/master

Java encode and decode test program

Author: Eugen

core-java-8/src/main/java/com/demo/encoding/ApacheCommonsEncodeDecode.java

@@ -0,0 +1,56 @@
+package com.demo.encoding;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.io.UnsupportedEncodingException;
+
+import org.apache.commons.codec.binary.Base64;
+import org.junit.Test;
+
+public class ApacheCommonsEncodeDecode {
+
+    @Test
+    public void whenStringIsEncoded() throws UnsupportedEncodingException {
+        String originalInput = "test input";
+        Base64 base64 = new Base64();
+        String encodedString = new String(base64.encode(originalInput.getBytes()));
+
+        assertNotNull(encodedString);
+        assertNotEquals(originalInput, encodedString);
+    }
+
+    @Test
+    public void whenStringIsEncoded_thenStringCanBeDecoded() throws UnsupportedEncodingException {
+        String originalInput = "test input";
+        Base64 base64 = new Base64();
+        String encodedString = new String(base64.encode(originalInput.getBytes()));
+
+        String decodedString = new String(base64.decode(encodedString.getBytes()));
+
+        assertNotNull(decodedString);
+        assertEquals(originalInput, decodedString);
+    }
+
+    @Test
+    public void whenStringIsEncodedUsingStaticMethod() throws UnsupportedEncodingException {
+        String originalInput = "test input";
+        String encodedString = new String(Base64.encodeBase64(originalInput.getBytes()));
+
+        assertNotNull(encodedString);
+        assertNotEquals(originalInput, encodedString);
+    }
+
+    @Test
+    public void whenStringIsEncodedUsingStaticMethod_thenStringCanBeDecodedUsingStaticMethod() throws UnsupportedEncodingException {
+        String originalInput = "test input";
+        String encodedString = new String(Base64.encodeBase64(originalInput.getBytes()));
+
+        String decodedString = new String(Base64.decodeBase64(encodedString.getBytes()));
+
+        assertNotNull(decodedString);
+        assertEquals(originalInput, decodedString);
+    }
+
+}

core-java-8/src/main/java/com/demo/encoding/Java8EncodeDecode.java

@@ -0,0 +1,84 @@
+package com.demo.encoding;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotEquals;
+import static org.junit.Assert.assertNotNull;
+
+import java.io.UnsupportedEncodingException;
+import java.util.Base64;
+import java.util.UUID;
+
+import org.junit.Test;
+
+public class Java8EncodeDecode {
+
+    @Test
+    public void whenStringIsEncoded() throws UnsupportedEncodingException {
+        String originalInput = "test input";
+        String encodedString = Base64.getEncoder().encodeToString(originalInput.getBytes());
+        assertNotNull(encodedString);
+        assertNotEquals(originalInput, encodedString);
+    }
+
+    @Test
+    public void whenStringIsEncoded_thenStringCanBeDecoded() throws UnsupportedEncodingException {
+        String originalInput = "test input";
+        String encodedString = Base64.getEncoder().encodeToString(originalInput.getBytes());
+
+        byte[] decodedBytes = Base64.getDecoder().decode(encodedString);
+        String decodedString = new String(decodedBytes);
+
+        assertNotNull(decodedString);
+        assertEquals(originalInput, decodedString);
+
+    }
+
+    @Test
+    public void whenURLIsEncoded() throws UnsupportedEncodingException {
+        String originalURL = "https://www.google.co.nz/?gfe_rd=cr&ei=dzbFVf&gws_rd=ssl#q=java";
+        String encodedURL = Base64.getUrlEncoder().encodeToString(originalURL.getBytes());
+        assertNotNull(encodedURL);
+        assertNotEquals(originalURL, encodedURL);
+    }
+
+    @Test
+    public void whenURLIsEncoded_thenURLCanBeDecoded() throws UnsupportedEncodingException {
+        String originalURL = "https://www.google.co.nz/?gfe_rd=cr&ei=dzbFVf&gws_rd=ssl#q=java";
+        String encodedURL = Base64.getUrlEncoder().encodeToString(originalURL.getBytes());
+        byte[] decodedBytes = Base64.getUrlDecoder().decode(encodedURL.getBytes());
+        String decodedURL = new String(decodedBytes);
+        assertNotNull(decodedURL);
+        assertEquals(originalURL, decodedURL);
+    }
+
+    @Test
+    public void whenMIMEIsEncoded() throws UnsupportedEncodingException {
+        StringBuilder buffer = getMimeBuffer();
+
+        byte[] forEncode = buffer.toString().getBytes();
+        String encodedMime = Base64.getMimeEncoder().encodeToString(forEncode);
+
+        assertNotNull(encodedMime);
+    }
+
+    @Test
+    public void whenMIMEIsEncoded_thenMIMECanBeDecoded() throws UnsupportedEncodingException {
+        StringBuilder buffer = getMimeBuffer();
+
+        byte[] forEncode = buffer.toString().getBytes();
+        String encodedMime = Base64.getMimeEncoder().encodeToString(forEncode);
+
+        byte[] decodedBytes = Base64.getMimeDecoder().decode(encodedMime);
+        String decodedMime = new String(decodedBytes);
+        assertNotNull(decodedMime);
+    }
+
+    private static StringBuilder getMimeBuffer() {
+        StringBuilder buffer = new StringBuilder();
+        for (int count = 0; count < 10; ++count) {
+            buffer.append(UUID.randomUUID().toString());
+        }
+        return buffer;
+    }
+
+}