resolve PR comment

app/src/androidTest/java/io/legado/app/UpdateTest.kt

@@ -4,7 +4,7 @@ import com.google.gson.Gson
 import io.legado.app.exception.NoStackTraceException
 import io.legado.app.help.http.okHttpClient
 import io.legado.app.model.GithubRelease
-import io.legado.app.utils.fromJsonArray
+import io.legado.app.utils.fromJsonObject
 import okhttp3.Request
 import org.junit.Assert.assertTrue
 import org.junit.Test
@@ -12,21 +12,41 @@ import org.junit.Test
 class UpdateTest {
 
     private val lastReleaseUrl =
-        "https://api.github.com/repos/gedoor/legado/releases?page=1?per_page=1"
+        "https://api.github.com/repos/gedoor/legado/releases/latest"
+
+    private val lastBetaReleaseUrl =
+        "https://api.github.com/repos/gedoor/legado/releases/tags/beta"
+
+    @Test
+    fun updateApp_beta() {
+        val body = okHttpClient.newCall(Request.Builder().url(lastBetaReleaseUrl).build()).execute()
+            .body!!.string()
+
+        val releaseList = Gson().fromJsonObject<GithubRelease>(body)
+            .getOrElse {
+                throw NoStackTraceException("获取新版本出错 " + it.localizedMessage)
+            }
+            .gitReleaseToAppReleaseInfo()
+            .sortedByDescending { it.createdAt }
+
+        assertTrue(releaseList.size == 2)
+        assertTrue(releaseList.all { it.downloadUrl.isNotBlank() })
+        assertTrue(releaseList.all { it.versionName.isNotBlank() })
+    }
 
     @Test
     fun updateApp() {
         val body = okHttpClient.newCall(Request.Builder().url(lastReleaseUrl).build()).execute()
             .body!!.string()
 
-        val releaseList = Gson().fromJsonArray<GithubRelease>(body)
+        val releaseList = Gson().fromJsonObject<GithubRelease>(body)
             .getOrElse {
                 throw NoStackTraceException("获取新版本出错 " + it.localizedMessage)
             }
-            .flatMap { it.gitReleaseToAppReleaseInfo() }
+            .gitReleaseToAppReleaseInfo()
             .sortedByDescending { it.createdAt }
 
-        assertTrue(releaseList.isNotEmpty())
+        assertTrue(releaseList.size == 1)
         assertTrue(releaseList.all { it.downloadUrl.isNotBlank() })
         assertTrue(releaseList.all { it.versionName.isNotBlank() })
     }