C51 syntax error log (1)

Today, when writing code, I found a very easy mistake.

Code

Void main ()
{
Unsigned int test;
Test = 0x02;
If (Test & 0x02 = 0x02)

{
Test = 0x02;
}
Else
{
Test = 0x02;
}
}

The red code is used to determine whether the second digit in the test variable is 1. However, after compilation, it is found that the assembly language of this Code is

C: 0x0011 EF mov A, r7
C: 0x0012 30e001 JNB 0xe0. 0, C: 0016

This is obviously in the judgment of the test variable's second bit.

Later I found that the Code must be changed

If (Test & 0x02) = 0x02)

The compilation result is correct.