Test Input Data for an Integer Field

• Nothing

• Empty field (clear any defaults)

• More than the maximum number of digits or characters

• 0

• Any valid value

• Minimum - 1

• Minimum

• Maximum

• Maximum + 1

• Much less than the Minimum

• Much more than the Maximum

• Minimum number of digits or characters

• Minimum - 1 number of digits or characters

• Maximum number of digits or characters

• Maximum + 1 number of digits or characters

• Much more than the Maximum number of digits or characters

• A negative value

• Nondigits, expecially / (ASCII character 47) and : (ASCII character 58)

• Wrong data type (e.g., decimal into integer)

• Expressions

• A single leading space

• Many leading spaces

• A single trailing space

• Many trailing spaces

• Lead and trailing spaces

• Leading 0

• Many leading zeros

• Leading + sign

• Many leading + signs

• Nonprinting character (e.g., Ctrl+char)

• Operating system filename reserved characters (e.g., "*.:")

• Language-specific reserved characters

• Upper ASCII (128-254) (a.k.a. ANSI) characters

• ASCII 255 (often interpreted as end of file)

• Uppercase characters

• Lowercase characters

• Modifiers (e.g., Ctrl, Alt, Shift-Ctrl, and so on)

• Function key (F2, F3, F5, and so on)

• 254

• 255 (1-byte, tinyint)

• 256

• 32766

• 32767 (2-byte, smallint)

• 32768

• 65534

• 65535 (2-byte unsigned, smallint)

• 65536

• 2147483646

• 2147483647 (4 byte, int)

• 2147483648

• 4294967294

• 4294967295 (4-byte unsigned, int)

• 4294967296

• 9223372036854775806

• 9223372036854775807 (8 byte, bigint)

• 9223372036854775808

• 18446744073709551614

• 18446744073709551615 (8 byte unsigned, bigint)

• 18446744073709551616