OnnxruntimeModuleTest.mm

// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT License.

#import "OnnxruntimeModule.h"
#import "TensorHelper.h"

#import <XCTest/XCTest.h>
#import <onnxruntime/onnxruntime_cxx_api.h>

@interface OnnxruntimeModuleTest : XCTestCase

@end

@implementation OnnxruntimeModuleTest

- (void)testOnnxruntimeModule {
  NSBundle *bundle = [NSBundle bundleForClass:[OnnxruntimeModuleTest class]];
  NSString *dataPath = [bundle pathForResource:@"test_types_float" ofType:@"ort"];

  OnnxruntimeModule *onnxruntimeModule = [OnnxruntimeModule new];

  // test loadModel()
  {
    NSMutableDictionary *options = [NSMutableDictionary dictionary];
    NSDictionary *resultMap = [onnxruntimeModule loadModel:dataPath options:options];

    XCTAssertEqual(resultMap[@"key"], dataPath);
    NSArray *inputNames = resultMap[@"inputNames"];
    XCTAssertEqual([inputNames count], 1);
    XCTAssertEqualObjects(inputNames[0], @"input");
    NSArray *outputNames = resultMap[@"outputNames"];
    XCTAssertEqual([outputNames count], 1);
    XCTAssertEqualObjects(outputNames[0], @"output");
  }

  // test run()
  {
    NSMutableDictionary *inputTensorMap = [NSMutableDictionary dictionary];

    // dims
    NSArray *dims = @[ [NSNumber numberWithLong:1], [NSNumber numberWithLong:5] ];
    inputTensorMap[@"dims"] = dims;

    // type
    inputTensorMap[@"type"] = JsTensorTypeFloat;

    // data
    std::array<float_t, 5> outValues{std::numeric_limits<float_t>::min(), 1.0f, -2.0f, 3.0f,
                                     std::numeric_limits<float_t>::max()};

    const NSInteger byteBufferSize = outValues.size() * sizeof(float_t);
    unsigned char *byteBuffer = static_cast<unsigned char *>(malloc(byteBufferSize));
    NSData *byteBufferRef = [NSData dataWithBytesNoCopy:byteBuffer length:byteBufferSize];
    float *floatPtr = (float *)[byteBufferRef bytes];
    for (NSUInteger i = 0; i < outValues.size(); ++i) {
      *floatPtr++ = outValues[i];
    }
    floatPtr = (float *)[byteBufferRef bytes];

    NSString *dataEncoded = [byteBufferRef base64EncodedStringWithOptions:0];
    inputTensorMap[@"data"] = dataEncoded;

    NSMutableDictionary *inputDataMap = [NSMutableDictionary dictionary];
    inputDataMap[@"input"] = inputTensorMap;

    NSMutableDictionary *options = [NSMutableDictionary dictionary];

    NSMutableArray *output = [NSMutableArray array];
    [output addObject:@"output"];

    NSDictionary *resultMap = [onnxruntimeModule run:dataPath input:inputDataMap output:output options:options];

    XCTAssertTrue([[resultMap objectForKey:@"output"] isEqualToDictionary:inputTensorMap]);
  }
}

@end