Add test

build.gradle

@@ -40,4 +40,5 @@ dependencies {
 //    compile 'org.bytedeco.javacpp-presets:opencv:4.0.1-1.4.4:windows-x86'
 //    compile 'org.bytedeco.javacpp-presets:opencv:4.0.1-1.4.4:windows-x86_64-gpu'
 //    compile 'org.bytedeco.javacpp-presets:opencv:4.0.1-1.4.4:windows-x86_64'
+    testImplementation 'org.junit.jupiter:junit-jupiter:5.4.0'
 }

src/test/java/me/ww23/image/BlindWatermarkTest.java

@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2019 ww23(https://github.com/ww23/BlindWatermark).
+ *
+ *  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 me.ww23.image;
+
+import me.ww23.image.coder.Decoder;
+import me.ww23.image.coder.Encoder;
+import me.ww23.image.coder.ImageEncoder;
+import me.ww23.image.coder.TextEncoder;
+import me.ww23.image.converter.Converter;
+import me.ww23.image.converter.DctConverter;
+import me.ww23.image.converter.DftConverter;
+import me.ww23.image.util.Supporter;
+import org.bytedeco.javacpp.opencv_core;
+import org.junit.jupiter.api.Test;
+
+import static org.bytedeco.javacpp.opencv_core.*;
+
+class BlindWatermarkTest {
+
+    private Converter converterDct = new DctConverter();
+
+    @Test
+    void dct() {
+        Converter converter = new DctConverter();
+        Encoder encoder = new ImageEncoder(converter);
+        encoder.encode("image/gakki-src.png", "image/watermark.png", "image/gakki-dct-img-ec.jpg");
+        Decoder decoder = new Decoder(converter);
+        decoder.decode("image/gakki-dct-img-ec.jpg", "image/gakki-dct-img-dc.jpg");
+        encoder = new TextEncoder(converter);
+        encoder.encode("image/gakki-src.png", "test", "image/gakki-dct-text-ec.jpg");
+        decoder.decode("image/gakki-dct-text-ec.jpg", "image/gakki-dct-text-dc.jpg");
+    }
+
+    @Test
+    void dft() {
+        Converter converter = new DftConverter();
+        Encoder encoder = new ImageEncoder(converter);
+        encoder.encode("image/gakki-src.png", "image/watermark.png", "image/gakki-dft-img-ec.png");
+        Decoder decoder = new Decoder(converter);
+        decoder.decode("image/gakki-dft-img-ec.png", "image/gakki-dft-img-dc.png");
+        encoder = new TextEncoder(converter);
+        encoder.encode("image/gakki-src.png", "test", "image/gakki-dft-text-ec.png");
+        decoder.decode("image/gakki-dft-text-ec.png", "image/gakki-dft-text-dc.png");
+    }
+
+    @Test
+    void speedGray() {
+        opencv_core.Mat src = Supporter.read("image/gakki-src.png", CV_8U);
+        converterDct.addTextWatermark(converterDct.start(src), "test");
+        converterDct.inverse(src);
+    }
+}