Added tests for ShellCommand.java

Author: hiteshsondhi88

FFmpegAndroid/src/androidTest/java/com/github/hiteshsondhi88/libffmpeg/ShellCommandTest.java

@@ -1,12 +1,52 @@
 package com.github.hiteshsondhi88.libffmpeg;
 
+import com.github.hiteshsondhi88.libffmpeg.utils.AssertionHelper;
+
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.Future;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
 public class ShellCommandTest extends CommonTestCase {
 
     public void testRun() throws Exception {
-        // TODO
+        ShellCommand shellCommand = new ShellCommand();
+        final Process process = shellCommand.run("logcat");
+        assertNotNull(process);
+        assertEquals(false, Util.isProcessCompleted(process));
+
+        Util.destroyProcess(process);
+
+        ExecutorService executor = Executors.newSingleThreadExecutor();
+
+        Future<?> future = executor.submit(new Runnable() {
+            @Override
+            public void run() {
+                String errorStream = Util.convertInputStreamToString(process.getErrorStream());
+                String inputStream = Util.convertInputStreamToString(process.getInputStream());
+
+                assertEquals(null, errorStream);
+                assertEquals(null, inputStream);
+            }
+        });
+
+        try {
+            future.get(1, TimeUnit.SECONDS);
+        } catch (TimeoutException e) {
+            AssertionHelper.assertError("could not destroy process");
+        }
+
+        executor.shutdownNow();
     }
 
     public void testRunWaitFor() throws Exception {
-        // TODO
+        ShellCommand shellCommand = new ShellCommand();
+        CommandResult commandResult = shellCommand.runWaitFor("ls /sdcard/");
+        assertNotNull(commandResult);
+        assertEquals(true, commandResult.success);
+        assertThat(commandResult.output).isNotEmpty();
     }
 }