diff --git a/MPChartExample/src/androidTest/java/com/xxmassdeveloper/mpchartexample/PieTest.kt b/MPChartExample/src/androidTest/java/com/xxmassdeveloper/mpchartexample/PieTest.kt
new file mode 100644
index 0000000000..dc3207dcf6
--- /dev/null
+++ b/MPChartExample/src/androidTest/java/com/xxmassdeveloper/mpchartexample/PieTest.kt
@@ -0,0 +1,68 @@
+package com.xxmassdeveloper.mpchartexample
+
+import android.view.View
+import android.widget.SeekBar
+import androidx.test.core.graphics.writeToTestStorage
+import androidx.test.espresso.Espresso.onView
+import androidx.test.espresso.UiController
+import androidx.test.espresso.ViewAction
+import androidx.test.espresso.matcher.ViewMatchers
+import androidx.test.espresso.matcher.ViewMatchers.withId
+import androidx.test.espresso.screenshot.captureToBitmap
+import androidx.test.ext.junit.rules.activityScenarioRule
+import androidx.test.ext.junit.runners.AndroidJUnit4
+import org.hamcrest.Matcher
+import org.junit.Rule
+import org.junit.Test
+import org.junit.rules.TestName
+import org.junit.runner.RunWith
+
+
+@RunWith(AndroidJUnit4::class)
+class PieTest {
+
+    @get:Rule
+    val activityScenarioRule = activityScenarioRule<PiePolylineChartActivity>()
+
+    @get:Rule
+    var nameRule = TestName()
+
+    @Test
+    fun piePolyline() {
+        onView(ViewMatchers.isRoot())
+                .captureToBitmap()
+                .writeToTestStorage("${javaClass.simpleName}_${nameRule.methodName}")
+
+        for(x in 10..50 step 10) {
+            onView(withId(R.id.seekBar1)).perform(setProgress(x))
+            onView(ViewMatchers.isRoot())
+                    .captureToBitmap()
+                    .writeToTestStorage("${javaClass.simpleName}_${nameRule.methodName}1-${x}")
+        }
+
+        for(x in 50..200 step 50) {
+            onView(withId(R.id.seekBar2)).perform(setProgress(x))
+            onView(ViewMatchers.isRoot())
+                .captureToBitmap()
+                .writeToTestStorage("${javaClass.simpleName}_${nameRule.methodName}2-${x}")
+        }
+    }
+
+    private fun setProgress(progress: Int): ViewAction {
+        return object : ViewAction {
+            override fun perform(uiController: UiController?, view: View) {
+                val seekBar = view as SeekBar
+                seekBar.progress = progress
+            }
+
+            override fun getDescription(): String {
+                return "Set a progress on a SeekBar"
+            }
+
+            override fun getConstraints(): Matcher<View> {
+                return ViewMatchers.isAssignableFrom(SeekBar::class.java)
+            }
+        }
+    }
+
+}
diff --git a/MPChartExample/src/main/res/layout/activity_piechart.xml b/MPChartExample/src/main/res/layout/activity_piechart.xml
index cac0b4a455..352a842ea7 100644
--- a/MPChartExample/src/main/res/layout/activity_piechart.xml
+++ b/MPChartExample/src/main/res/layout/activity_piechart.xml
@@ -30,7 +30,7 @@
         android:layout_marginBottom="35dp"
         android:layout_toLeftOf="@+id/tvXMax"
         android:layout_marginRight="5dp"
-        android:max="25"
+        android:max="50"
         android:paddingBottom="12dp" />
 
     <TextView