add ut

build.gradle

@@ -47,6 +47,16 @@ dependencies {
 java {
     withSourcesJar()
     withJavadocJar()
+    sourceCompatibility(JavaVersion.VERSION_1_8)
+    targetCompatibility(JavaVersion.VERSION_1_8)
+}
+
+tasks.compileJava {
+    options.encoding = "UTF-8"
+}
+
+tasks.compileTestJava {
+    options.encoding = "UTF-8"
 }
 
 test {

src/main/java/io/github/robothy/sdwebui/sdk/Txt2Image.java

@@ -5,6 +5,15 @@
 
 public interface Txt2Image {
 
+  /**
+   * Generate images from text.
+   *
+   * @param options The options to generate images.
+   * @return The result of the generation.
+   *
+   * @throws io.github.robothy.sdwebui.sdk.exceptions.SdWebuiServerValidationException
+   * @throws io.github.robothy.sdwebui.sdk.exceptions.SdWebuiBadRequestException
+   */
   Txt2ImgResult txt2Img(Txt2ImageOptions options);
 
 }

src/test/java/io/github/robothy/sdwebui/sdk/models/SystemInfoTest.java

@@ -0,0 +1,22 @@
+package io.github.robothy.sdwebui.sdk.models;
+
+import static org.junit.jupiter.api.Assertions.*;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.junit.jupiter.api.Test;
+
+class SystemInfoTest {
+
+  @Test
+  void testSerialization() throws JsonProcessingException {
+    SystemInfo systemInfo = new SystemInfo();
+    systemInfo.setEndpoint("http://localhost:8080");
+    systemInfo.setPlatform("Linux");
+    systemInfo.setPythonVersion("3.8.5");
+    systemInfo.setSdwebuiVersion("0.0.1");
+    ObjectMapper objectMapper = new ObjectMapper();
+    assertEquals(systemInfo, objectMapper
+        .readValue(objectMapper.writeValueAsString(systemInfo), SystemInfo.class));
+  }
+
+}

src/test/java/io/github/robothy/sdwebui/sdk/models/results/Txt2ImgResultTest.java

@@ -0,0 +1,26 @@
+package io.github.robothy.sdwebui.sdk.models.results;
+
+import static org.junit.jupiter.api.Assertions.*;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.github.robothy.sdwebui.sdk.models.options.Txt2ImageOptions;
+import java.util.List;
+import org.junit.jupiter.api.Test;
+
+class Txt2ImgResultTest {
+
+  @Test
+  void testSerialization() throws JsonProcessingException {
+    Txt2ImgResult txt2ImgResult = new Txt2ImgResult();
+    txt2ImgResult.setImages(List.of("image1", "image2"));
+    txt2ImgResult.setInfo("info");
+    txt2ImgResult.setParameters(Txt2ImageOptions.builder()
+        .prompt("1dog")
+        .build());
+
+    ObjectMapper objectMapper = new ObjectMapper();
+    assertEquals(txt2ImgResult, objectMapper.readValue(objectMapper
+        .writeValueAsString(txt2ImgResult), Txt2ImgResult.class));
+  }
+
+}