Added test class for FieldLevelEncryptionParams

Author: jaaufauvre

src/test/java/com/mastercard/developer/encryption/FieldLevelEncryptionParamsTest.java

@@ -0,0 +1,72 @@
+package com.mastercard.developer.encryption;
+
+import com.mastercard.developer.test.TestUtils;
+import org.apache.commons.codec.DecoderException;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.ExpectedException;
+
+import static org.hamcrest.CoreMatchers.isA;
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class FieldLevelEncryptionParamsTest {
+
+    @Rule
+    public ExpectedException expectedException = ExpectedException.none();
+
+    @Test
+    public void testGenerate_Nominal() throws Exception {
+
+        // GIVEN
+        FieldLevelEncryptionConfig config = TestUtils.getTestFieldLevelEncryptionConfigBuilder().build();
+
+        // WHEN
+        FieldLevelEncryptionParams params = FieldLevelEncryptionParams.generate(config);
+
+        // THEN
+        assertNotNull(params.getIvValue());
+        assertNotNull(params.getIvSpec());
+        assertNotNull(params.getEncryptedKeyValue());
+        assertNotNull(params.getSecretKey());
+        assertEquals("80810fc13a8319fcf0e2ec322c82a4c304b782cc3ce671176343cfe8160c2279", params.getEncryptionCertificateFingerprintValue());
+        assertEquals("761b003c1eade3a5490e5000d37887baa5e6ec0e226c07706e599451fc032a79", params.getEncryptionKeyFingerprintValue());
+        assertEquals("SHA256", params.getOaepPaddingDigestAlgorithmValue());
+    }
+
+    @Test
+    public void testGetIvSpec_ShouldThrowEncryptionException_WhenFailsToDecodeIV() throws Exception {
+
+        // GIVEN
+        FieldLevelEncryptionConfig config = TestUtils.getTestFieldLevelEncryptionConfigBuilder().build();
+        FieldLevelEncryptionParams params = new FieldLevelEncryptionParams("INVALID VALUE", null,
+                                                                           null, null,
+                                                                           null,config);
+
+        // THEN
+        expectedException.expect(EncryptionException.class);
+        expectedException.expectMessage("Failed to decode the provided IV value!");
+        expectedException.expectCause(isA(DecoderException.class));
+
+        // WHEN
+        params.getIvSpec();
+    }
+
+    @Test
+    public void testGetSecretKey_ShouldThrowEncryptionException_WhenFailsToEncryptedKey() throws Exception {
+
+        // GIVEN
+        FieldLevelEncryptionConfig config = TestUtils.getTestFieldLevelEncryptionConfigBuilder().build();
+        FieldLevelEncryptionParams params = new FieldLevelEncryptionParams(null, "INVALID VALUE",
+                                                                           null, null,
+                                                                           null,config);
+
+        // THEN
+        expectedException.expect(EncryptionException.class);
+        expectedException.expectMessage("Failed to decode and unwrap the provided secret key value!");
+        expectedException.expectCause(isA(DecoderException.class));
+
+        // WHEN
+        params.getSecretKey();
+    }
+}