From 065192f11ee5eabdfc32c14f08288ec8194c76c0 Mon Sep 17 00:00:00 2001
From: Roumen Georgiev <roumen_georgiev@yahoo.com>
Date: Thu, 7 Mar 2019 14:49:07 +0200
Subject: [PATCH] added test for getAvailableInternalMemorySize()

it took me some time, but it's OK now
---
 .../storage/StorageConstraintPluginTest.java  | 32 +++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/app/src/test/java/info/nightscout/androidaps/plugins/constraints/storage/StorageConstraintPluginTest.java b/app/src/test/java/info/nightscout/androidaps/plugins/constraints/storage/StorageConstraintPluginTest.java
index c9b2914b1c..5bc5cfacbe 100644
--- a/app/src/test/java/info/nightscout/androidaps/plugins/constraints/storage/StorageConstraintPluginTest.java
+++ b/app/src/test/java/info/nightscout/androidaps/plugins/constraints/storage/StorageConstraintPluginTest.java
@@ -1,4 +1,7 @@
 package info.nightscout.androidaps.plugins.constraints.storage;
+import android.os.Environment;
+import android.os.StatFs;
+
 import junit.framework.Assert;
 
 import org.junit.Before;
@@ -8,6 +11,8 @@ import org.powermock.api.mockito.PowerMockito;
 import org.powermock.core.classloader.annotations.PrepareForTest;
 import org.powermock.modules.junit4.PowerMockRunner;
 
+import java.io.File;
+
 import info.AAPSMocker;
 import info.nightscout.androidaps.MainApp;
 import info.nightscout.androidaps.R;
@@ -15,16 +20,21 @@ import info.nightscout.androidaps.interfaces.Constraint;
 
 import static org.mockito.Mockito.when;
 import static org.mockito.Mockito.mock;
+import static org.powermock.api.mockito.PowerMockito.whenNew;
+import static org.mockito.ArgumentMatchers.any;
 
 /**
  * Created by Rumen on 06.03.2019.
  */
 
 @RunWith(PowerMockRunner.class)
-@PrepareForTest({MainApp.class, StorageConstraintPlugin.class})
+@PrepareForTest({MainApp.class, StorageConstraintPlugin.class, StatFs.class, Environment.class})
 public class StorageConstraintPluginTest extends StorageConstraintPlugin{
 
     StorageConstraintPlugin storageConstraintPlugin;
+    private File mockedFile;
+    private static final String path = "/data";
+    private StatFs mockedStatFs;
 
     @Test
     public void isLoopInvocationAllowedTest(){
@@ -43,11 +53,29 @@ public class StorageConstraintPluginTest extends StorageConstraintPlugin{
         Assert.assertEquals(Boolean.TRUE, c2.value());
     }
 
+    @Test
+    public void getAvailableInternalMemorySizeTest() throws Exception {
+        PowerMockito.mockStatic(Environment.class);
+        PowerMockito.when(Environment.getDataDirectory()).thenReturn(mockedFile);
+        when(mockedFile.getPath()).thenReturn(path);
+        when(mockedFile.exists()).thenReturn(true);
+
+        whenNew(StatFs.class).withArguments(any()).thenReturn(mockedStatFs);
+        when(mockedStatFs.getBlockSizeLong()).thenReturn(1024L);
+        when(mockedStatFs.getAvailableBlocksLong()).thenReturn(150l*1024);
+
+        long freeSpaceInMb = storageConstraintPlugin.getAvailableInternalMemorySize();
+        Assert.assertEquals(150L, freeSpaceInMb);
+
+    }
+
+
     @Before
     public void prepareMock() {
         AAPSMocker.mockMainApp();
         AAPSMocker.mockStrings();
-//        PowerMockito.mockStatic(Environment.class);
+        mockedFile = mock(File.class);
+        mockedStatFs = mock(StatFs.class);
         storageConstraintPlugin = StorageConstraintPlugin.getPlugin();
     }
 }