diff --git a/src/main/java/run/halo/app/handler/theme/ThemeConfigResolver.java b/src/main/java/run/halo/app/handler/theme/ThemeConfigResolver.java
index 497cfa2ae..63ce8a226 100644
--- a/src/main/java/run/halo/app/handler/theme/ThemeConfigResolver.java
+++ b/src/main/java/run/halo/app/handler/theme/ThemeConfigResolver.java
@@ -1,12 +1,25 @@
 package run.halo.app.handler.theme;
 
+import org.springframework.lang.NonNull;
+
+import java.io.IOException;
+import java.util.List;
+
 /**
- * Theme configuration resolver.
+ * Theme config resolver interface.
  *
  * @author johnniang
  * @date 4/10/19
  */
-public class ThemeConfigResolver {
-
+public interface ThemeConfigResolver {
 
+    /**
+     * Resolves content as tab.
+     *
+     * @param content content must not be blank
+     * @return a list of tab
+     * @throws IOException throws when content conversion fails
+     */
+    @NonNull
+    List<Tab> resolve(@NonNull String content) throws IOException;
 }
diff --git a/src/main/java/run/halo/app/handler/theme/impl/YamlThemeConfigResolverImpl.java b/src/main/java/run/halo/app/handler/theme/impl/YamlThemeConfigResolverImpl.java
new file mode 100644
index 000000000..029c6a4aa
--- /dev/null
+++ b/src/main/java/run/halo/app/handler/theme/impl/YamlThemeConfigResolverImpl.java
@@ -0,0 +1,201 @@
+package run.halo.app.handler.theme.impl;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
+import org.springframework.lang.Nullable;
+import org.springframework.stereotype.Component;
+import run.halo.app.handler.theme.Item;
+import run.halo.app.handler.theme.Option;
+import run.halo.app.handler.theme.Tab;
+import run.halo.app.handler.theme.ThemeConfigResolver;
+import run.halo.app.model.enums.DataType;
+import run.halo.app.model.enums.InputType;
+
+import java.io.IOException;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Theme configuration resolver.
+ *
+ * @author johnniang
+ * @date 4/10/19
+ */
+@Component
+public class YamlThemeConfigResolverImpl implements ThemeConfigResolver {
+
+    private final ObjectMapper yamlMapper = new ObjectMapper(new YAMLFactory());
+
+    @Override
+    public List<Tab> resolve(String content) throws IOException {
+        return handleTabs(yamlMapper.readValue(content, Object.class));
+    }
+
+    @SuppressWarnings("unchecked")
+    private List<Tab> handleTabs(@Nullable Object config) {
+        List<Tab> tabs = new LinkedList<>();
+
+        if (config instanceof List) {
+            List configList = (List) config;
+
+            // Resolve tab
+            configList.forEach(tabYaml -> {
+                // tabYaml should be map
+                if (!(tabYaml instanceof Map)) {
+                    return;
+                }
+
+                Map tabMap = ((Map) tabYaml);
+
+                Tab tab = new Tab();
+
+                tab.setName(tabMap.get("name").toString());
+                tab.setLabel(tabMap.get("label").toString());
+
+                // Handle items
+                tab.setItems(handleItems(tabMap.get("items")));
+
+                tabs.add(tab);
+            });
+
+        } else if (config instanceof Map) {
+            Map configMap = (Map) config;
+            configMap.forEach((key, value) -> {
+                // key: tab name
+                // value: tab property, should be a map
+                if (!(value instanceof Map)) {
+                    return;
+                }
+
+                Map tabMap = (Map) value;
+
+                Tab tab = new Tab();
+
+                tab.setName(key.toString());
+                tab.setLabel(tabMap.get("label").toString());
+
+                // Handle items
+                tab.setItems(handleItems(tabMap.get("items")));
+
+                tabs.add(tab);
+            });
+        }
+
+        return tabs;
+    }
+
+    @SuppressWarnings("unchecked")
+    private List<Item> handleItems(@Nullable Object items) {
+
+        if (items == null) {
+            return Collections.emptyList();
+        }
+
+        List<Item> result = new LinkedList<>();
+
+        if (items instanceof List) {
+            ((List) items).forEach(itemYaml -> {
+                if (!(itemYaml instanceof Map)) {
+                    return;
+                }
+
+                // Should be Map
+                Map itemMap = (Map) itemYaml;
+
+                // Build item
+                Item item = new Item();
+
+                item.setName(itemMap.get("name").toString());
+                item.setLabel(itemMap.getOrDefault("label", item.getName()).toString());
+                item.setDataType(DataType.typeOf(itemMap.get("data_type")));
+                item.setType(InputType.typeOf(itemMap.get("type")));
+                item.setDefaultValue(itemMap.get("default"));
+
+                // Handle options
+                item.setOptions(handleOptions(itemMap.get("options")));
+
+                // Add item
+                result.add(item);
+            });
+        } else if (items instanceof Map) {
+            Map itemsMap = (Map) items;
+
+            itemsMap.forEach((key, value) -> {
+                if (!(value instanceof Map)) {
+                    return;
+                }
+
+                Map itemMap = (Map) value;
+
+                // key: item name
+                Item item = new Item();
+                item.setName(key.toString());
+                item.setLabel(itemMap.getOrDefault("label", item.getName()).toString());
+                item.setDataType(DataType.typeOf(itemMap.get("data_type")));
+                item.setType(InputType.typeOf(itemMap.get("type")));
+                item.setDefaultValue(itemMap.get("default"));
+
+                // Handle options
+                item.setOptions(handleOptions(itemMap.get("options")));
+
+                // Add item
+                result.add(item);
+            });
+        }
+
+        return result;
+    }
+
+    @SuppressWarnings("unchecked")
+    private List<Option> handleOptions(@Nullable Object options) {
+
+        if (options == null) {
+            return Collections.emptyList();
+        }
+
+        List<Option> result = new LinkedList<>();
+
+        if (options instanceof List) {
+            ((List) options).forEach(optionYaml -> {
+                // optionYaml should be Map
+                if (!(optionYaml instanceof Map)) {
+                    return;
+                }
+
+                Map optionMap = (Map) optionYaml;
+
+                // Build option
+                Option option = new Option();
+                // TODO Convert the value type
+                option.setValue(optionMap.get("value"));
+                option.setLabel(optionMap.get("label").toString());
+
+                result.add(option);
+            });
+        } else if (options instanceof Map) {
+            Map optionsMap = (Map) options;
+            optionsMap.forEach((key, value) -> {
+                // key: option value
+                // value: Map that contains option label
+
+                if (!(value instanceof Map)) {
+                    return;
+                }
+
+                Map optionMap = (Map) value;
+
+
+                Option option = new Option();
+                // TODO Convert the value type
+                option.setValue(key);
+                option.setLabel(optionMap.get("label").toString());
+
+                result.add(option);
+            });
+        }
+
+        return result;
+    }
+}
diff --git a/src/test/java/run/halo/app/utils/YamlTest.java b/src/test/java/run/halo/app/utils/YamlTest.java
index 11fde56de..bc41b2a34 100644
--- a/src/test/java/run/halo/app/utils/YamlTest.java
+++ b/src/test/java/run/halo/app/utils/YamlTest.java
@@ -1,17 +1,14 @@
 package run.halo.app.utils;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
-import com.fasterxml.jackson.dataformat.yaml.YAMLFactory;
 import org.junit.Test;
-import org.springframework.lang.Nullable;
-import run.halo.app.handler.theme.Item;
-import run.halo.app.handler.theme.Option;
 import run.halo.app.handler.theme.Tab;
-import run.halo.app.model.enums.DataType;
-import run.halo.app.model.enums.InputType;
+import run.halo.app.handler.theme.impl.YamlThemeConfigResolverImpl;
 
 import java.io.IOException;
-import java.util.*;
+import java.util.List;
+
+import static org.hamcrest.Matchers.equalTo;
+import static org.junit.Assert.assertThat;
 
 /**
  * Yaml test.
@@ -21,9 +18,7 @@ import java.util.*;
  */
 public class YamlTest {
 
-    private final ObjectMapper yamlMapper = new ObjectMapper(new YAMLFactory());
-
-    private final ObjectMapper jsonMapper = new ObjectMapper();
+    private final YamlThemeConfigResolverImpl resolver = new YamlThemeConfigResolverImpl();
 
     @Test
     public void readYamlTest() throws IOException {
@@ -67,11 +62,11 @@ public class YamlTest {
                 "        - value: false\n" +
                 "          label: 关闭";
 
-        LinkedHashMap config = yamlMapper.readValue(yaml, LinkedHashMap.class);
+        List<Tab> tabs = resolver.resolve(yaml);
 
-        System.out.println(config.getClass());
-
-        System.out.println(jsonMapper.writeValueAsString(config));
+        assertThat(tabs.size(), equalTo(2));
+        assertThat(tabs.get(0).getItems().size(), equalTo(3));
+        assertThat(tabs.get(1).getItems().size(), equalTo(2));
     }
 
     @Test
@@ -123,15 +118,12 @@ public class YamlTest {
                 "        - value: false\n" +
                 "          label: 关闭\n";
 
-        Object config = yamlMapper.readValue(yaml, Object.class);
 
-        List<Tab> tabs = handleTabs(config);
+        List<Tab> tabs = resolver.resolve(yaml);
 
-        System.out.println(config.getClass());
-
-        System.out.println(tabs);
-
-        System.out.println(jsonMapper.writeValueAsString(config));
+        assertThat(tabs.size(), equalTo(2));
+        assertThat(tabs.get(0).getItems().size(), equalTo(4));
+        assertThat(tabs.get(1).getItems().size(), equalTo(3));
     }
 
     @Test
@@ -182,181 +174,12 @@ public class YamlTest {
                 "        - value: false\n" +
                 "          label: 关闭";
 
+        List<Tab> tabs = resolver.resolve(yaml);
 
-        Object config = yamlMapper.readValue(yaml, Object.class);
-
-        List<Tab> tabs = handleTabs(config);
-
-        System.out.println(config.getClass());
-
-        System.out.print(tabs);
-    }
-
-    @SuppressWarnings("unchecked")
-    private List<Tab> handleTabs(@Nullable Object config) {
-        List<Tab> tabs = new LinkedList<>();
-
-        if (config instanceof List) {
-            List configList = (List) config;
-
-            // Resolve tab
-
-            configList.forEach(tabYaml -> {
-                // tabYaml should be map
-                if (!(tabYaml instanceof Map)) {
-                    return;
-                }
-
-                Map tabMap = ((Map) tabYaml);
-
-                Tab tab = new Tab();
-
-                tab.setName(tabMap.get("name").toString());
-                tab.setLabel(tabMap.get("label").toString());
-
-                // Handle items
-                tab.setItems(handleItems(tabMap.get("items")));
-
-                tabs.add(tab);
-            });
-
-        } else if (config instanceof Map) {
-            Map configMap = (Map) config;
-            configMap.forEach((key, value) -> {
-                // key: tab name
-                // value: tab property, should be a map
-                if (!(value instanceof Map)) {
-                    return;
-                }
-
-                Map tabMap = (Map) value;
-
-                Tab tab = new Tab();
-
-                tab.setName(key.toString());
-                tab.setLabel(tabMap.get("label").toString());
-
-                // Handle items
-                tab.setItems(handleItems(tabMap.get("items")));
-
-                tabs.add(tab);
-            });
-        }
-
-        return tabs;
-    }
-
-    @SuppressWarnings("unchecked")
-    private List<Item> handleItems(@Nullable Object items) {
-
-        if (items == null) {
-            return Collections.emptyList();
-        }
-
-        List<Item> result = new LinkedList<>();
-
-        if (items instanceof List) {
-            ((List) items).forEach(itemYaml -> {
-                if (!(itemYaml instanceof Map)) {
-                    return;
-                }
-
-                // Should be Map
-                Map itemMap = (Map) itemYaml;
-
-                // Build item
-                Item item = new Item();
-
-                item.setName(itemMap.get("name").toString());
-                item.setLabel(itemMap.getOrDefault("label", item.getName()).toString());
-                item.setDataType(DataType.typeOf(itemMap.get("data_type")));
-                item.setType(InputType.typeOf(itemMap.get("type")));
-                item.setDefaultValue(itemMap.get("default"));
-
-                // Handle options
-                item.setOptions(handleOptions(itemMap.get("options")));
-
-                // Add item
-                result.add(item);
-            });
-        } else if (items instanceof Map) {
-            Map itemsMap = (Map) items;
-
-            itemsMap.forEach((key, value) -> {
-                if (!(value instanceof Map)) {
-                    return;
-                }
-
-                Map itemMap = (Map) value;
-
-                // key: item name
-                Item item = new Item();
-                item.setName(key.toString());
-                item.setLabel(itemMap.getOrDefault("label", item.getName()).toString());
-                item.setDataType(DataType.typeOf(itemMap.get("data_type")));
-                item.setType(InputType.typeOf(itemMap.get("type")));
-                item.setDefaultValue(itemMap.get("default"));
-
-                // Handle options
-                item.setOptions(handleOptions(itemMap.get("options")));
-
-                // Add item
-                result.add(item);
-            });
-        }
-
-        return result;
-    }
-
-    @SuppressWarnings("unchecked")
-    private List<Option> handleOptions(@Nullable Object options) {
-
-        if (options == null) {
-            return Collections.emptyList();
-        }
-
-        List<Option> result = new LinkedList<>();
-
-        if (options instanceof List) {
-            ((List) options).forEach(optionYaml -> {
-                // optionYaml should be Map
-                if (!(optionYaml instanceof Map)) {
-                    return;
-                }
-
-                Map optionMap = (Map) optionYaml;
-
-                // Build option
-                Option option = new Option();
-                // TODO Convert the value type
-                option.setValue(optionMap.get("value"));
-                option.setLabel(optionMap.get("label").toString());
-
-                result.add(option);
-            });
-        } else if (options instanceof Map) {
-            Map optionsMap = (Map) options;
-            optionsMap.forEach((key, value) -> {
-                // key: option value
-                // value: Map that contains option label
-
-                if (!(value instanceof Map)) {
-                    return;
-                }
-
-                Map optionMap = (Map) value;
-
-
-                Option option = new Option();
-                // TODO Convert the value type
-                option.setValue(key);
-                option.setLabel(optionMap.get("label").toString());
-
-                result.add(option);
-            });
-        }
-
-        return result;
+        assertThat(tabs.size(), equalTo(2));
+        assertThat(tabs.get(0).getItems().size(), equalTo(4));
+        assertThat(tabs.get(1).getItems().size(), equalTo(3));
+        assertThat(tabs.get(0).getItems().get(0).getOptions().size(), equalTo(2));
     }
 
 }