[BUG] Unnecessary "utbot_abs_error" constant added to the test

[tyuldashev]

Version
2022.8.233
Description
UTBot adds unused constant to the test
static const float utbot_abs_error = 1e-6;

Generate code for following function

char a_or_b(char a, char b) {
  if (a == 'a')
    return a;
  else 
    return b;
}

Result is

#include "snippet_dot_c_test.h"

#include "gtest/gtest.h"
namespace UTBot {
static const float utbot_abs_error = 1e-6;


#pragma region regression
TEST(regression, a_or_b_test_1)
{
    char actual = a_or_b('h', 'c');
    EXPECT_EQ('c', actual);
}

TEST(regression, a_or_b_test_2)
{
    char actual = a_or_b('a', 'c');
    EXPECT_EQ('a', actual);
}

#pragma endregion
}

generated constant utbot_abs_error is unused and seems unecessary.

[ladisgin]

@alexey-utkin, we can add check that function has float in parameters or move this value to header

[alexey-utkin]

We need to use
EXPECT_FLOAT_EQ and EXPECT_DOUBLE_EQ instead of EXPECT_NEAR.
It makes utbot_abs_error variable obsolete and resolves the problem with NAN and INFINITY comparison.