// RUN: %target-run-simple-swift
// REQUIRES: executable_test

// REQUIRES: objc_interop
// UNSUPPORTED: OS=watchos

import StdlibUnittest
import Accelerate

var AccelerateTests = TestSuite("Accelerate")

if #available(iOS 10.0, OSX 10.12, tvOS 10.0, watchOS 4.0, *) {
  
  AccelerateTests.test("BNNS/ImageStackDescriptor") {
    var succeed = BNNSImageStackDescriptor(width: 0, height: 0, channels: 0,
                                           row_stride: 0, image_stride: 0,
                                           data_type: .int8)
    expectEqual(succeed.data_scale, 1)
    expectEqual(succeed.data_bias, 0)
    succeed = BNNSImageStackDescriptor(width: 0, height: 0, channels: 0,
                                       row_stride: 0, image_stride: 0,
                                       data_type: .int16,
                                       data_scale: 0.5, data_bias: 0.5)
    expectEqual(succeed.data_scale, 0.5)
    expectEqual(succeed.data_bias, 0.5)
    expectCrashLater()
    //  indexed8 is not allowed as an imageStack data type.
    let _ = BNNSImageStackDescriptor(width: 0, height: 0, channels: 0,
                                     row_stride: 0, image_stride: 0,
                                     data_type: .indexed8)
  }
  
  AccelerateTests.test("BNNS/VectorDescriptor") {
    var succeed = BNNSVectorDescriptor(size: 0, data_type: .int8)
    expectEqual(succeed.data_scale, 1)
    expectEqual(succeed.data_bias, 0)
    succeed = BNNSVectorDescriptor(size: 0, data_type: .int8,
                                   data_scale: 0.5, data_bias: 0.5)
    expectEqual(succeed.data_scale, 0.5)
    expectEqual(succeed.data_bias, 0.5)
    expectCrashLater()
    //  indexed8 is not allowed as a vector data type.
    let _ = BNNSVectorDescriptor(size: 0, data_type: .indexed8)
  }
  
  AccelerateTests.test("BNNS/LayerData") {
    //  The zero layer should have data == nil.
    expectEqual(BNNSLayerData.zero.data, nil)
    var succeed = BNNSLayerData(data: nil, data_type: .int8)
    expectEqual(succeed.data_scale, 1)
    expectEqual(succeed.data_bias, 0)
    succeed = BNNSLayerData(data: nil, data_type: .int8, data_scale: 0.5,
                            data_bias: 0.5, data_table: nil)
    expectEqual(succeed.data_scale, 0.5)
    expectEqual(succeed.data_bias, 0.5)
    var table: [Float] = [1.0]
    succeed = BNNSLayerData.indexed8(data: nil, data_table: &table)
    expectCrashLater()
    // indexed8 requires a non-nil data table.
    let _ = BNNSLayerData(data: nil, data_type: .indexed8)
  }
  
  AccelerateTests.test("BNNS/Activation") {
    expectEqual(BNNSActivation.identity.function, .identity)
    let id = BNNSActivation(function: .identity)
    expectTrue(id.alpha.isNaN)
    expectTrue(id.beta.isNaN)
  }
  
}

runAllTests()