BAEL-17341 Slice 8 | The top 100 articles should have their own package in the module (#7664)

java-strings-2/src/test/java/com/baeldung/base64encodinganddecoding/Java8EncodeDecodeUnitTest.java

@@ -0,0 +1,109 @@
+package com.baeldung.base64encodinganddecoding;
+
+import org.junit.Test;
+
+import java.io.UnsupportedEncodingException;
+import java.util.Base64;
+import java.util.UUID;
+
+import static org.junit.Assert.*;
+
+public class Java8EncodeDecodeUnitTest {
+
+    // tests
+
+    @Test
+    public void whenStringIsEncoded_thenOk() throws UnsupportedEncodingException {
+        final String originalInput = "test input";
+        final String encodedString = Base64.getEncoder().encodeToString(originalInput.getBytes());
+
+        assertNotNull(encodedString);
+        assertNotEquals(originalInput, encodedString);
+    }
+
+    @Test
+    public void whenStringIsEncoded_thenStringCanBeDecoded() throws UnsupportedEncodingException {
+        final String originalInput = "test input";
+        final String encodedString = Base64.getEncoder().encodeToString(originalInput.getBytes());
+
+        final byte[] decodedBytes = Base64.getDecoder().decode(encodedString);
+        final String decodedString = new String(decodedBytes);
+
+        assertNotNull(decodedString);
+        assertEquals(originalInput, decodedString);
+    }
+
+    @Test
+    public void whenStringIsEncodedWithoutPadding_thenOk() throws UnsupportedEncodingException {
+        final String originalInput = "test input";
+        final String encodedString = Base64.getEncoder().withoutPadding().encodeToString(originalInput.getBytes());
+
+        assertNotNull(encodedString);
+        assertNotEquals(originalInput, encodedString);
+    }
+
+    @Test
+    public void whenStringIsEncodedWithoutPadding_thenStringCanBeDecoded() throws UnsupportedEncodingException {
+        final String originalInput = "test input";
+        final String encodedString = Base64.getEncoder().withoutPadding().encodeToString(originalInput.getBytes());
+
+        final byte[] decodedBytes = Base64.getDecoder().decode(encodedString);
+        final String decodedString = new String(decodedBytes);
+
+        assertNotNull(decodedString);
+        assertEquals(originalInput, decodedString);
+    }
+
+    @Test
+    public void whenUrlIsEncoded_thenOk() throws UnsupportedEncodingException {
+        final String originalUrl = "https://www.google.co.nz/?gfe_rd=cr&ei=dzbFVf&gws_rd=ssl#q=java";
+        final String encodedUrl = Base64.getUrlEncoder().encodeToString(originalUrl.getBytes());
+        assertNotNull(encodedUrl);
+        assertNotEquals(originalUrl, encodedUrl);
+    }
+
+    @Test
+    public void whenUrlIsEncoded_thenURLCanBeDecoded() throws UnsupportedEncodingException {
+        final String originalUrl = "https://www.google.co.nz/?gfe_rd=cr&ei=dzbFVf&gws_rd=ssl#q=java";
+        final String encodedUrl = Base64.getUrlEncoder().encodeToString(originalUrl.getBytes());
+
+        final byte[] decodedBytes = Base64.getUrlDecoder().decode(encodedUrl.getBytes());
+        final String decodedUrl = new String(decodedBytes);
+
+        assertNotNull(decodedUrl);
+        assertEquals(originalUrl, decodedUrl);
+    }
+
+    @Test
+    public void whenMimeIsEncoded_thenOk() throws UnsupportedEncodingException {
+        final StringBuilder buffer = getMimeBuffer();
+
+        final byte[] forEncode = buffer.toString().getBytes();
+        final String encodedMime = Base64.getMimeEncoder().encodeToString(forEncode);
+
+        assertNotNull(encodedMime);
+    }
+
+    @Test
+    public void whenMimeIsEncoded_thenItCanBeDecoded() throws UnsupportedEncodingException {
+        final StringBuilder buffer = getMimeBuffer();
+
+        final byte[] forEncode = buffer.toString().getBytes();
+        final String encodedMime = Base64.getMimeEncoder().encodeToString(forEncode);
+
+        final byte[] decodedBytes = Base64.getMimeDecoder().decode(encodedMime);
+        final String decodedMime = new String(decodedBytes);
+        assertNotNull(decodedMime);
+    }
+
+    //
+
+    private static StringBuilder getMimeBuffer() {
+        final StringBuilder buffer = new StringBuilder();
+        for (int count = 0; count < 10; ++count) {
+            buffer.append(UUID.randomUUID().toString());
+        }
+        return buffer;
+    }
+
+}