Two problems:

1)
Dangling else. These macros are the body of an if statement.
if (expression) FAIL(...)
That means they will bind to an immediately subsequent else, a bug.
This code should assert b if cond is true.
If cond is not true, eExpr should run.

    if (cond)
        ASSERT_TRUE(b);
    else {
        eExpr
    }

will expand with the else binding to the interior if:

    if (cond){
        if(b) {
            FAIL(...)
        } else {
            eExpr
        }
    }

Which doesn't run eExpr unless cond is true.

2)
Should expose a stream() object to append detail. Some do. Many do not.
ASSERT_FOO(x, y, z) << "details go here: uid=" << uid << ", x=" << x;

The macros must be rewritten to follow a standard format.