Added algorithmic test for BruteForceMatcher

tests/cv/src/abruteforcematcher.cpp

+#include "cvtest.h"
+
+using namespace cv;
+
+class BruteForceMatcherTest : public CvTest
+{
+public:
+    BruteForceMatcherTest();
+protected:
+    void run( int );
+};
+
+BruteForceMatcherTest::BruteForceMatcherTest() : CvTest( "BruteForceMatcher", "BruteForceMatcher")
+{
+}
+
+void BruteForceMatcherTest::run( int )
+{
+    const int dimensions = 64;
+    const int descriptorsNumber = 1024;
+
+    Mat train = Mat( descriptorsNumber, dimensions, CV_32FC1);
+    Mat query = Mat( descriptorsNumber, dimensions, CV_32FC1);
+
+    Mat permutation( 1, descriptorsNumber, CV_32SC1 );
+    for( int i=0;i<descriptorsNumber;i++ )
+        permutation.at<int>( 0, i ) = i;
+
+    RNG rng (cvGetTickCount());
+    randShuffle( permutation, 1, &rng );
+
+    float boundary =  500.f;
+    for( int row=0;row<descriptorsNumber;row++ )
+    {
+        for( int col=0;col<dimensions;col++ )
+        {
+            int bit = rng( 2 );
+            train.at<float>( permutation.at<int>( 0, row ), col ) = bit*boundary + rng.uniform( 0.f, boundary );
+            query.at<float>( row, col ) = bit*boundary + rng.uniform( 0.f, boundary );
+        }
+    }
+
+    vector<int> matches;
+    BruteForceMatcher<L2<float> > matcher;
+    matcher.add( train );
+    matcher.match( query, matches );
+
+    for( int i=0;i<descriptorsNumber;i++ )
+    {
+        if( matches[i] != permutation.at<int>( 0, i ) )
+        {
+            ts->set_failed_test_info( CvTS::FAIL_MISMATCH );
+            break;
+        }
+    }
+}
+
+BruteForceMatcherTest bruteForceMatcherTest;