Syntax Validation of "command changing"

Link to manual of this example: https://doc.redox-os.org/ion-manual/control/01-conditionals.html#using-the--and--operators

First example

test 1 == 1 && echo "1 equals 1" 

Second example

test $foo = "foo" && test $bar = "bar" &&
    echo "foobar was found" ||
    echo "either foo or bar was not found"