Enable flipper android to use different ports based on prop

Summary:
Part 1 of enabling flipper to run on custom ports: android SDK.
Still to go: iOS SDK and desktop

This should allow you to run mobile apps that use flipper on different ports than the default (8089,8088).

`adb shell`
`su`
`setprop flipper.ports 1111,2222`

From what I can tell, this only works on rooted devices.

Reviewed By: passy

Differential Revision: D13753238

fbshipit-source-id: c5f370c9d8c7382e8c17fb81d4010c642ef7c114

android/src/test/java/com/facebook/flipper/android/FlipperPropsTest.java

@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * <p>This source code is licensed under the MIT license found in the LICENSE file in the root
+ * directory of this source tree.
+ */
+package com.facebook.flipper.android;
+
+import static org.junit.Assert.assertEquals;
+
+import com.facebook.testing.robolectric.v3.WithTestDefaultsRunner;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+@RunWith(WithTestDefaultsRunner.class)
+public class FlipperPropsTest {
+
+  @Test
+  public void shouldParseExpectedInput() throws Exception {
+    int value1 = FlipperProps.extractIntFromPropValue("1111,2222", 0, 1234);
+    assertEquals(value1, 1111);
+    int value2 = FlipperProps.extractIntFromPropValue("1111,2222", 1, 1234);
+    assertEquals(value2, 2222);
+  }
+
+  @Test
+  public void shouldFallbackForTruncatedInput() throws Exception {
+    int value = FlipperProps.extractIntFromPropValue("1111", 1, 1234);
+    assertEquals(value, 1234);
+  }
+
+  @Test
+  public void shouldFallbackForMistypedInput() throws Exception {
+    int value = FlipperProps.extractIntFromPropValue("111ds1", 0, 1234);
+    assertEquals(value, 1234);
+  }
+
+  @Test
+  public void shouldFallbackForEmptyInput() throws Exception {
+    int value = FlipperProps.extractIntFromPropValue("", 0, 1234);
+    assertEquals(value, 1234);
+  }
+}

android/src/test/java/com/facebook/flipper/plugins/console/ConsoleFlipperPluginTest.java

@@ -1,49 +0,0 @@
-/*
- *  Copyright (c) 2018-present, Facebook, Inc.
- *
- *  This source code is licensed under the MIT license found in the LICENSE
- *  file in the root directory of this source tree.
- *
- */
-package com.facebook.flipper.plugins.console;
-
-import static org.hamcrest.CoreMatchers.hasItem;
-import static org.hamcrest.MatcherAssert.assertThat;
-
-import com.facebook.flipper.core.FlipperObject;
-import com.facebook.flipper.testing.FlipperConnectionMock;
-import com.facebook.flipper.testing.FlipperResponderMock;
-import org.junit.Before;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-import org.robolectric.RobolectricTestRunner;
-
-@RunWith(RobolectricTestRunner.class)
-public class ConsoleFlipperPluginTest {
-
-  FlipperConnectionMock connection;
-  FlipperResponderMock responder;
-
-  @Before
-  public void setup() throws Exception {
-    JavascriptEnvironment jsEnvironment = new JavascriptEnvironment();
-    final ConsoleFlipperPlugin plugin = new ConsoleFlipperPlugin(jsEnvironment);
-    connection = new FlipperConnectionMock();
-    responder = new FlipperResponderMock();
-    plugin.onConnect(connection);
-  }
-
-  @Test
-  public void simpleExpressionShouldEvaluateCorrectly() throws Exception {
-
-    receiveScript("2 + 2");
-    assertThat(
-        responder.successes,
-        hasItem(new FlipperObject.Builder().put("value", 4).put("type", "json").build()));
-  }
-
-  private void receiveScript(String a) throws Exception {
-    FlipperObject getValue = new FlipperObject.Builder().put("command", a).build();
-    connection.receivers.get("executeCommand").onReceive(getValue, responder);
-  }
-}