[Test] add Image.fromarray LA mode test

inspired from Tests/test_image_frombytes.py

Tests/test_image_fromarray_la.py

@@ -0,0 +1,22 @@
+from helper import unittest, PillowTestCase
+
+from PIL import Image
+
+import numpy as np
+
+class TestImageFromArrayLA(PillowTestCase):
+
+    def test_sanity(self):
+        ar1 = (np.random.random((40,40,2))*255).astype('uint8')
+        im1 = Image.fromarray(ar1)
+        arr = np.array(im1.getdata(), 'uint8')
+        ar2 = arr.reshape(im1.size[1], im1.size[0], arr.shape[1])
+        im2 = Image.fromarray(ar2)
+
+        self.assert_image_equal(im1, im2)
+
+
+if __name__ == '__main__':
+    unittest.main()
+
+# End of file