COMPMID-1652 NEON Cleanup and add missing tests

Change-Id: I7b351f18a78ed8a250bf3a91ef320db61984146a
Reviewed-on: https://review.mlplatform.org/485
Reviewed-by: Isabella Gottardi <isabella.gottardi@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
Reviewed-by: Michele Di Giorgio <michele.digiorgio@arm.com>
diff --git a/tests/validation/NEON/ChannelShuffle.cpp b/tests/validation/NEON/ChannelShuffle.cpp
index 474fb49..ec84183 100644
--- a/tests/validation/NEON/ChannelShuffle.cpp
+++ b/tests/validation/NEON/ChannelShuffle.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018 ARM Limited.
+ * Copyright (c) 2018-2019 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -43,6 +43,33 @@
 TEST_SUITE(NEON)
 TEST_SUITE(ChannelShuffle)
 
+// *INDENT-OFF*
+// clang-format off
+DATA_TEST_CASE(Validate, framework::DatasetMode::ALL, zip(zip(zip(
+               framework::dataset::make("InputInfo", { TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),  // Invalid num groups
+                                                       TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::U8),  // Mismatching data_type
+                                                       TensorInfo(TensorShape(4U, 5U, 4U), 1, DataType::F32),  // Mismatching shapes
+                                                       TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),  // Num groups == channels
+                                                       TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),  // (channels % num_groups) != 0
+                                                       TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),  // Valid
+                                                     }),
+               framework::dataset::make("OutputInfo",{ TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),
+                                                       TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),
+                                                       TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),
+                                                       TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),
+                                                       TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),
+                                                       TensorInfo(TensorShape(4U, 4U, 4U), 1, DataType::F32),
+                                                     })),
+               framework::dataset::make("NumGroups",{ 1, 2, 2, 4, 3, 2,
+                                                     })),
+               framework::dataset::make("Expected", { false, false, false, false, false, true})),
+               input_info, output_info, num_groups, expected)
+{
+    ARM_COMPUTE_EXPECT(bool(NEChannelShuffleLayer::validate(&input_info.clone()->set_is_resizable(false), &output_info.clone()->set_is_resizable(false), num_groups)) == expected, framework::LogLevel::ERRORS);
+}
+// clang-format on
+// *INDENT-ON*
+
 DATA_TEST_CASE(Configuration,
                framework::DatasetMode::ALL,
                combine(datasets::SmallRandomChannelShuffleLayerDataset(),