if pos != tt.wantPos || found != tt.wantFound {
					t.Errorf("BinarySearch got (%v, %v), want (%v, %v)", pos, found, tt.wantPos, tt.wantFound)
				}
			}

			{
				pos, found := BinarySearchFunc(tt.data, tt.target, strings.Compare)
				if pos != tt.wantPos || found != tt.wantFound {
					t.Errorf("BinarySearchFunc got (%v, %v), want (%v, %v)", pos, found, tt.wantPos, tt.wantFound)
				}
			}
		})
	}
}

			// Checking default binding.
			if wantBound := test.wantBinderID == -1; defaultBound != wantBound {
				t.Errorf("got bound with default binding: %v, want %v", defaultBound, wantBound)
			}

			// Checking extenders binding.
			for i, ext := range test.extenders {
				wantBound := i == test.wantBinderID
				if gotBound := ext.(*fakeExtender).gotBind; gotBound != wantBound {