Use the Android-provided API to stream-decode base64-encoded data

2 files changed, 30 insertions, 0 deletions

diff --git a/tests/res/raw/small_file.bin b/tests/res/raw/small_file.bin
new file mode 100644
index 0000000..df5b053
--- /dev/null
+++ b/tests/res/raw/small_file.bin
diff --git a/tests/src/cgeo/geocaching/ImageUtilsTest.java b/tests/src/cgeo/geocaching/ImageUtilsTest.java
new file mode 100644
index 0000000..c67d340
--- /dev/null
+++ b/tests/src/cgeo/geocaching/ImageUtilsTest.java
@@ -0,0 +1,30 @@
+package cgeo.geocaching;
+
+import cgeo.geocaching.test.AbstractResourceInstrumentationTestCase;
+import cgeo.geocaching.test.R;
+import cgeo.geocaching.utils.ImageUtils;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.Arrays;
+
+public class ImageUtilsTest extends AbstractResourceInstrumentationTestCase {
+
+    private static final String icon64 = "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";
+
+    public void testBase64decoding() throws IOException {
+        final ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
+        ImageUtils.decodeBase64ToStream(icon64, outputStream);
+        final byte[] decodedImage = outputStream.toByteArray();
+        outputStream.close();
+        assertEquals("decoded image has the right size", 409, decodedImage.length);
+        final InputStream originalStream = getResourceStream(R.raw.small_file);
+        final byte[] originalImage = new byte[409];
+        assertEquals("original image has the right size (consistency check)", 409, originalStream.read(originalImage));
+        originalStream.close();
+        assertTrue("decoded base64 image is similar to original file data",
+                Arrays.equals(originalImage, decodedImage));
+    }
+
+}