diff --git a/pgpainless-core/src/test/java/org/pgpainless/encryption_signing/EncryptionStreamClosedTest.java b/pgpainless-core/src/test/java/org/pgpainless/encryption_signing/EncryptionStreamClosedTest.java
new file mode 100644
index 00000000..93797281
--- /dev/null
+++ b/pgpainless-core/src/test/java/org/pgpainless/encryption_signing/EncryptionStreamClosedTest.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2021 Paul Schaub.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.pgpainless.encryption_signing;
+
+import static org.junit.jupiter.api.Assertions.assertThrows;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+import org.bouncycastle.openpgp.PGPException;
+import org.junit.jupiter.api.Test;
+import org.pgpainless.PGPainless;
+import org.pgpainless.util.Passphrase;
+
+public class EncryptionStreamClosedTest {
+
+    @Test
+    public void testStreamHasToBeClosedBeforeGetResultCanBeCalled() throws IOException, PGPException {
+        OutputStream out = new ByteArrayOutputStream();
+        EncryptionStream stream = PGPainless.encryptAndOrSign()
+                .onOutputStream(out)
+                .forPassphrases(Passphrase.fromPassword("dummy"))
+                .usingSecureAlgorithms()
+                .doNotSign()
+                .asciiArmor();
+
+        // No close() called => getResult throws
+        assertThrows(IllegalStateException.class, stream::getResult);
+    }
+}
diff --git a/pgpainless-core/src/test/java/org/pgpainless/encryption_signing/SigningTest.java b/pgpainless-core/src/test/java/org/pgpainless/encryption_signing/SigningTest.java
new file mode 100644
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--- /dev/null
+++ b/pgpainless-core/src/test/java/org/pgpainless/encryption_signing/SigningTest.java
@@ -0,0 +1,114 @@
+/*
+ * Copyright 2021 Paul Schaub.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.pgpainless.encryption_signing;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.util.Arrays;
+import java.util.HashSet;
+import java.util.Set;
+
+import org.bouncycastle.openpgp.PGPException;
+import org.bouncycastle.openpgp.PGPPublicKeyRing;
+import org.bouncycastle.openpgp.PGPPublicKeyRingCollection;
+import org.bouncycastle.openpgp.PGPSecretKey;
+import org.bouncycastle.openpgp.PGPSecretKeyRing;
+import org.bouncycastle.openpgp.PGPSecretKeyRingCollection;
+import org.bouncycastle.util.io.Streams;
+import org.junit.jupiter.api.Test;
+import org.pgpainless.PGPainless;
+import org.pgpainless.algorithm.CompressionAlgorithm;
+import org.pgpainless.algorithm.HashAlgorithm;
+import org.pgpainless.algorithm.SymmetricKeyAlgorithm;
+import org.pgpainless.decryption_verification.DecryptionStream;
+import org.pgpainless.decryption_verification.OpenPgpMetadata;
+import org.pgpainless.key.OpenPgpV4Fingerprint;
+import org.pgpainless.key.TestKeys;
+import org.pgpainless.key.protection.SecretKeyRingProtector;
+import org.pgpainless.key.util.KeyRingUtils;
+import org.pgpainless.util.selection.key.impl.SignatureKeySelectionStrategy;
+
+public class SigningTest {
+
+    @Test
+    public void testEncryptionAndSignatureVerification() throws IOException, PGPException {
+
+        PGPPublicKeyRing julietKeys = TestKeys.getJulietPublicKeyRing();
+        PGPPublicKeyRing romeoKeys = TestKeys.getRomeoPublicKeyRing();
+
+        PGPSecretKeyRing cryptieKeys = TestKeys.getCryptieSecretKeyRing();
+        PGPSecretKey cryptieSigningKey = new SignatureKeySelectionStrategy()
+                .selectKeysFromKeyRing(cryptieKeys)
+                .iterator().next();
+
+        PGPPublicKeyRingCollection keys = new PGPPublicKeyRingCollection(Arrays.asList(julietKeys, romeoKeys));
+
+        ByteArrayOutputStream out = new ByteArrayOutputStream();
+        EncryptionStream encryptionStream = PGPainless.encryptAndOrSign(EncryptionStream.Purpose.STORAGE)
+                .onOutputStream(out)
+                .toRecipients(keys)
+                .andToSelf(KeyRingUtils.publicKeyRingFrom(cryptieKeys))
+                .usingAlgorithms(SymmetricKeyAlgorithm.AES_192, HashAlgorithm.SHA384, CompressionAlgorithm.ZIP)
+                .signWith(SecretKeyRingProtector.unlockSingleKeyWith(TestKeys.CRYPTIE_PASSPHRASE, cryptieSigningKey), cryptieSigningKey)
+                .signCanonicalText()
+                .asciiArmor();
+
+        byte[] messageBytes = "This message is signed and encrypted to Romeo and Juliet.".getBytes(StandardCharsets.UTF_8);
+        ByteArrayInputStream message = new ByteArrayInputStream(messageBytes);
+
+        Streams.pipeAll(message, encryptionStream);
+        encryptionStream.close();
+
+        byte[] encrypted = out.toByteArray();
+        ByteArrayInputStream cryptIn = new ByteArrayInputStream(encrypted);
+
+        PGPSecretKeyRing romeoSecret = TestKeys.getRomeoSecretKeyRing();
+        PGPSecretKeyRing julietSecret = TestKeys.getJulietSecretKeyRing();
+
+        PGPSecretKeyRingCollection secretKeys = new PGPSecretKeyRingCollection(Arrays.asList(romeoSecret, julietSecret));
+        Set<OpenPgpV4Fingerprint> trustedFingerprints = new HashSet<>();
+        trustedFingerprints.add(new OpenPgpV4Fingerprint(cryptieKeys));
+        trustedFingerprints.add(new OpenPgpV4Fingerprint(julietKeys));
+        PGPPublicKeyRingCollection verificationKeys = new PGPPublicKeyRingCollection(Arrays.asList(KeyRingUtils.publicKeyRingFrom(cryptieKeys), romeoKeys));
+
+        DecryptionStream decryptionStream = PGPainless.decryptAndOrVerify().onInputStream(cryptIn)
+                .decryptWith(secretKeys)
+                .verifyWith(trustedFingerprints, verificationKeys)
+                .ignoreMissingPublicKeys()
+                .build();
+
+        ByteArrayOutputStream plaintextOut = new ByteArrayOutputStream();
+
+        Streams.pipeAll(decryptionStream, plaintextOut);
+        decryptionStream.close();
+
+        OpenPgpMetadata metadata = decryptionStream.getResult();
+        assertEquals(SymmetricKeyAlgorithm.AES_192, metadata.getSymmetricKeyAlgorithm());
+        assertEquals(HashAlgorithm.SHA384.getAlgorithmId(), metadata.getSignatures().iterator().next().getHashAlgorithm());
+        assertTrue(metadata.isEncrypted());
+        assertTrue(metadata.isSigned());
+        assertTrue(metadata.isVerified());
+        assertTrue(metadata.isIntegrityProtected());
+        assertTrue(metadata.containsVerifiedSignatureFrom(KeyRingUtils.publicKeyRingFrom(cryptieKeys)));
+        assertFalse(metadata.containsVerifiedSignatureFrom(julietKeys));
+    }
+}