TestAssertContainsPrint(): printing of failing content tests

assert 'contains' in TestAssertContainsPrint() failed {part: foobar, full: the quick brown fox jumps over the lazy dog, info: test fails but passes, just visualization}

assert 'contains' in TestAssertContainsPrint() failed {part: [102 111 111 98 97 114], full: [116 104 101 32 113 117 105 99 107 32 98 114 111 119 110 32 46 46 46], info: test fails but passes, just visualization}

assert in TestOffsetPrint() failed {info: should fail referencing line 174}

assert 'assignable' in TestTestingAssertion() failed {got: func (), want: int, info: should fail (but not the test)}

assert 'assignable' in TestTestingAssertion() failed {got: func (), want: int}

assert 'assignable' in TestTestingAssertion() failed {got: func (), want: int, info: this should fail too}

TestSetPrinter(): first 1 (a)