initial work

app/src/main/java/info/nightscout/androidaps/MainApp.java

@@ -37,6 +37,7 @@ import info.nightscout.androidaps.plugins.configBuilder.ConfigBuilderPlugin;
 import info.nightscout.androidaps.plugins.constraints.dstHelper.DstHelperPlugin;
 import info.nightscout.androidaps.plugins.constraints.objectives.ObjectivesPlugin;
 import info.nightscout.androidaps.plugins.constraints.safety.SafetyPlugin;
+import info.nightscout.androidaps.plugins.constraints.storage.StorageConstraintPlugin;
 import info.nightscout.androidaps.plugins.general.actions.ActionsFragment;
 import info.nightscout.androidaps.plugins.general.careportal.CareportalPlugin;
 import info.nightscout.androidaps.plugins.general.food.FoodPlugin;
@@ -175,6 +176,7 @@ public class MainApp extends Application {
             if (Config.OTHERPROFILES) pluginsList.add(LocalProfilePlugin.getPlugin());
             pluginsList.add(TreatmentsPlugin.getPlugin());
             if (Config.SAFETY) pluginsList.add(SafetyPlugin.getPlugin());
+            if (Config.SAFETY) pluginsList.add(StorageConstraintPlugin.getPlugin());
             if (Config.APS) pluginsList.add(ObjectivesPlugin.getPlugin());
             pluginsList.add(SourceXdripPlugin.getPlugin());
             pluginsList.add(SourceNSClientPlugin.getPlugin());
@@ -198,6 +200,7 @@ public class MainApp extends Application {
 
             pluginsList.add(DstHelperPlugin.getPlugin());
 
+
             ConfigBuilderPlugin.getPlugin().initialize();
         }
 

app/src/main/java/info/nightscout/androidaps/plugins/constraints/storage/StorageConstraintPlugin.java

@@ -0,0 +1,67 @@
+package info.nightscout.androidaps.plugins.constraints.storage;
+
+import android.os.Environment;
+import android.os.StatFs;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.File;
+
+import info.nightscout.androidaps.MainApp;
+import info.nightscout.androidaps.R;
+import info.nightscout.androidaps.interfaces.Constraint;
+import info.nightscout.androidaps.interfaces.ConstraintsInterface;
+import info.nightscout.androidaps.interfaces.PluginBase;
+import info.nightscout.androidaps.interfaces.PluginDescription;
+import info.nightscout.androidaps.interfaces.PluginType;
+import info.nightscout.androidaps.logging.L;
+
+/**
+ * Created by Rumen on 06.03.2019.
+ */
+public class StorageConstraintPlugin extends PluginBase implements ConstraintsInterface {
+    private static Logger log = LoggerFactory.getLogger(L.CONSTRAINTS);
+    static StorageConstraintPlugin plugin = null;
+
+    public static StorageConstraintPlugin getPlugin() {
+        if (plugin == null)
+            plugin = new StorageConstraintPlugin();
+        return plugin;
+    }
+
+    public StorageConstraintPlugin() {
+        super(new PluginDescription()
+                .mainType(PluginType.CONSTRAINTS)
+                .neverVisible(true)
+                .alwaysEnabled(true)
+                .showInList(false)
+                .pluginName(R.string.storage)
+        );
+    }
+
+    /**
+     * Constraints interface
+     **/
+
+    @Override
+    public Constraint<Boolean> isClosedLoopAllowed(Constraint<Boolean> value) {
+        long diskfree = getAvailableInternalMemorySize();
+        log.debug("Internal storage free (Mb):"+diskfree);
+        if (diskfree < 200) {
+            value.set(false, MainApp.gs(R.string.diskfull), this);
+        }
+
+        return value;
+    }
+
+    public static long getAvailableInternalMemorySize() {
+        File path = Environment.getDataDirectory();
+        StatFs stat = new StatFs(path.getPath());
+        long blockSize = stat.getBlockSizeLong();
+        long blocksAvailable = stat.getAvailableBlocksLong();
+        int size = 1048576; // blocksize of 1 Mb
+        return ((blocksAvailable * blockSize) / size);
+    }
+
+}

app/src/main/res/values/strings.xml

@@ -1312,7 +1312,8 @@
     <string name="dst_plugin_name" translatable="false">Dayligh Saving time</string>
     <string name="dst_in_24h_warning">Dayligh Saving time change in 24h or less</string>
     <string name="dst_loop_disabled_warning">Dayligh Saving time change in less than 3 hours - Closed loop diabled</string>
-
+    <string name="storage">internal storage constraint</string>
+    <string name="diskfull">Free at least 200Mb from internal storage! Loop disabled!</string>
     <plurals name="objective_days">
         <item quantity="one">%1$d day</item>
         <item quantity="other">%1$d days</item>

app/src/test/java/info/AAPSMocker.java

@@ -104,6 +104,7 @@ public class AAPSMocker {
         when(MainApp.gs(R.string.profile_per_unit)).thenReturn("/U");
         when(MainApp.gs(R.string.profile_carbs_per_unit)).thenReturn("g/U");
         when(MainApp.gs(R.string.profile_ins_units_per_hout)).thenReturn("U/h");
+        when(MainApp.gs(R.string.diskfull)).thenReturn("Free at least 200Mb from internal storage! Loop disabled!");
     }
 
     public static MainApp mockMainApp() {

app/src/test/java/info/nightscout/androidaps/plugins/constraints/storage/StorageConstraintPluginTest.java

@@ -0,0 +1,53 @@
+package info.nightscout.androidaps.plugins.constraints.storage;
+import junit.framework.Assert;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.powermock.api.mockito.PowerMockito;
+import org.powermock.core.classloader.annotations.PrepareForTest;
+import org.powermock.modules.junit4.PowerMockRunner;
+
+import info.AAPSMocker;
+import info.nightscout.androidaps.MainApp;
+import info.nightscout.androidaps.R;
+import info.nightscout.androidaps.interfaces.Constraint;
+
+import static org.mockito.Mockito.when;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Created by Rumen on 06.03.2019.
+ */
+
+@RunWith(PowerMockRunner.class)
+@PrepareForTest({MainApp.class, StorageConstraintPlugin.class})
+public class StorageConstraintPluginTest extends StorageConstraintPlugin{
+
+    StorageConstraintPlugin storageConstraintPlugin;
+
+    @Test
+    public void isLoopInvocationAllowedTest(){
+        PowerMockito.mockStatic(StorageConstraintPlugin.class);
+        // Set free space under 200(Mb) to disable loop
+        when(StorageConstraintPlugin.getAvailableInternalMemorySize()).thenReturn(150L);
+        Constraint<Boolean> c = new Constraint<>(true);
+        c = storageConstraintPlugin.isClosedLoopAllowed(c);
+        Assert.assertEquals(true, c.getReasons().contains(MainApp.gs(R.string.diskfull)));
+        Assert.assertEquals(Boolean.FALSE, c.value());
+        // Set free space over 200(Mb) to enable loop
+        when(StorageConstraintPlugin.getAvailableInternalMemorySize()).thenReturn(300L);
+        Constraint<Boolean> c2 = new Constraint<>(true);
+        c2 = storageConstraintPlugin.isClosedLoopAllowed(c2);
+        Assert.assertEquals(false, c2.getReasons().contains(MainApp.gs(R.string.diskfull)));
+        Assert.assertEquals(Boolean.TRUE, c2.value());
+    }
+
+    @Before
+    public void prepareMock() {
+        AAPSMocker.mockMainApp();
+        AAPSMocker.mockStrings();
+//        PowerMockito.mockStatic(Environment.class);
+        storageConstraintPlugin = StorageConstraintPlugin.getPlugin();
+    }
+}