Assertables: Rust crate of "assert" macros for testing

The assertables Rust crate provides many "assert" macros to help with compile-time testing and run-time reliability

Crate: https://crates.io/crates/assertables

Docs: https://docs.rs/assertables/

Repo: https://github.com/sixarm/assertables-rust-crate/

Highlights

Value macros:

• Such as assert_gt!(value1, value2)

• Which means value1 > value2

Set macros:

• Such as assert_set_subset!(set1, set2)

• Which means set1 ⊆ set2

Function macros:

• Such as assert_fn_eq!(function, input, value)

• Which means function(input1) == value

Reader macros:

• Such as assert_read_to_string_eq!(reader1, string)

• This means reader1.read_to_string() == string

Commmand macros:

• Such as assert_command_stdout_eq!(command, string)

• This means String::from_utf8(command.output().unwrap().stdout).unwrap() == string

Naming conventions

Abbreviations:

• eq means equal; ne means not equal.

• lt means less than; le means less than or equal.

• gt means greater than; ge means greater than or equal.

Shorthands:

• reader means implements .read_to_string(…) such as std::io::Read.

• matcher means implements .is_match(…) such as regex::Regex.

• containee means usable inside .contains(…) such as a std::string::String substring.

• set means a collection such as ::std::collections::BTreeSet.

• bag means a collection such as ::std::collections::BTreeMap with key counts.

Forms for panic! or Result Err()

The macros have forms for immediate interrupts or returning results:

• assert_gt!(a, b) => () or panic!(…)

• assert_gt_as_result!(a, b) => Result Ok(()) or Result Err(…)

Forms for default messages or custom messages

The macros have forms for default messages or custom messages.

Example:

• assert_gt(1, 2) => panic!("assertion failed:assert_gt(1, 2)…")

• assert_gt(1, 2, "lorem ipsum") => panic!("lorem ipsum")

Forms for comparing an expression versus equivalent

Some macros have forms for comparing to an expression (expr) versus an equivalent (other):

Example:

• assert_read_to_string_eq!(reader, expr) => reader.read_to_string() == expr

• assert_read_to_string_eq_other!(reader1, reader2) => reader1.read_to_string() == reader2.read_to_string()

assert_* for values

Compare values.

• assert_eq!(a, b) ~ a == b

• assert_ne!(a, b) ~ a != b

• assert_lt!(a, b) ~ a < b

• assert_le!(a, b) ~ a <= b

• assert_gt!(a, b) ~ a > b

• assert_ge!(a, b) ~ a >= b

assertset* for set collection comparisons

These macros help with comparison of set parameters, such as two arrays or two vectors. where the item order does not matter, and the item count does not matter. The macros convert inputs into HashSet iterators.

• assert_set_eq!(a, b) ~ set a == set b

• assert_set_ne!(a, b) ~ set a != set b

• assert_set_subset!(a, b) ~ set a ⊆ set b

• assert_set_superset!(a, b) ~ set a ⊇ set b

• assert_set_joint!(a, b) ~ set a is joint with set b

• assert_set_disjoint!(a, b) ~ set a is disjoint with set b

assertbag* for bag collection comparisons

These macros help with comparison of bag parameters, such as comparison of two arrays or two vectors, where the item order does not matter, and the item count does matter. The macros convert inputs into HashMap iterators.

• assert_bag_eq(a, b) ~ bag a == bag b

• assert_bag_ne(a, b) ~ bag a != bag b

• assert_bag_subbag(a, b) ~ bag a ⊆ bag b

• assert_bag_superbag(a, b) ~ bag a ⊇ bag b

assertfn* for function return comparisons

• assert_fn_eq!(f, a, b) ~ f(a) == b

• assert_fn_eq_other!(f, a, b) ~ f(a) == f(b)

• assert_fn_ne!(f, a, b) ~ f(a) != b

• assert_fn_ne_other!(f, a, b) ~ f(a) != f(b)

• assert_fn_lt!(f, a, b) ~ f(a) < v

• assert_fn_lt_other!(f, a, b) ~ f(a) < f(b)

• assert_fn_le!(f, a, b) ~ f(a) <= b

• assert_fn_le_other!(f, a, b) ~ f(a) <= f(b)

• assert_fn_gt!(f, a, b) ~ f(a) > b

• assert_fn_gt_other!(f, a, b) ~ f(a) > f(b)

• assert_fn_ge!(f, a, b) ~ f(a) >= b

• assert_fn_ge_other!(f, a, b) ~ f(a) >= f(b)

assertfnok_* for function Ok() comparisons

• assert_fn_ok_eq!(f, a, b) ~ f(a).unwrap() == b

• assert_fn_ok_eq_other!(f, a, b) ~ f(a).unwrap() == f(b).unwrap()

• assert_fn_ok_ne!(f, a, b) ~ f(a).unwrap() != b

• assert_fn_ok_ne_other!(f, a, b) ~ f(a).unwrap() != f(b).unwrap()

• assert_fn_ok_lt!(f, a, b) ~ f(a).unwrap() < b

• assert_fn_ok_lt_other!(f, a, b) ~ f(a).unwrap() < f(b).unwrap()

• assert_fn_ok_le!(f, a, b) ~ f(a).unwrap() <= b

• assert_fn_ok_le_other!(f, a, b) ~ f(a).unwrap() <= f(b).unwrap()

• assert_fn_ok_gt!(f, a, b) ~ f(a).unwrap() > b

• assert_fn_ok_gt_other!(f, a, b) ~ f(a).unwrap() > f(b).unwrap()

• assert_fn_ok_gt!(f, a, b) ~ f(a).unwrap() > b

• assert_fn_ok_gt_other!(f, a, b) ~ f(a).unwrap() > f(b).unwrap()

assertfnerr_* for function Err() comparisons

• assert_fn_err_eq!(f, a, b) ~ f(a).unwrap_err() == b

• assert_fn_err_eq_other!(f, a, b) ~ f(a).unwraperr() == f(b).unwraperr()

• assert_fn_err_ne!(f, a, b) ~ f(a).unwrap_err() != b

• assert_fn_err_ne_other!(f, a, b) ~ f(a).unwraperr() != f(b).unwraperr()

• assert_fn_err_lt!(f, a, b) ~ f(a).unwrap_err() < b

• assert_fn_err_lt_other!(f, a, b) ~ f(a).unwraperr() < f(b).unwraperr()

• assert_fn_err_le!(f, a, b) ~ f(a).unwrap_err() <= b

• assert_fn_err_le_other!(f, a, b) ~ f(a).unwraperr() <= f(b).unwraperr()

• assert_fn_err_gt!(f, a, b) ~ f(a).unwrap_err() > b

• assert_fn_err_gt_other!(f, a, b) ~ f(a).unwraperr() > f(b).unwraperr()

• assert_fn_err_ge!(f, a, b)~ f(a).unwrap_err() >= b

• assert_fn_err_ge_other!(f, a, b)~ f(a).unwraperr() >= f(b).unwraperr()

assertreadtostring* for std::io::Read comparisons

These macros help with readers, such as file handles, byte arrays, input streams, and the trait std::io::Read.

• assert_read_to_string_eq!(a, b) ~ a.readtostring() == b

• assert_read_to_string_eq_other!(a, b) ~ a.readtostring() == b.readtostring()

• assert_read_to_string_ne!(a, b) ~ a.readtostring() != b

• assert_read_to_string_ne_other!(a, b) ~ a.readtostring() != b.readtostring()

• assert_read_to_string_lt!(a, b) ~ a.readtostring() < b

• assert_read_to_string_lt_other!(a, b) ~ a.readtostring() < b.readtostring()

• assert_read_to_string_le!(a, b) ~ a.readtostring() <= b

• assert_read_to_string_le_other!(a, b) ~ a.readtostring() <= b.readtostring()

• assert_read_to_string_gt!(a, b) ~ a.readtostring() > b

• assert_read_to_string_gt_other!(a, b) ~ a.readtostring() > b.readtostring()

• assert_read_to_string_ge!(a, b) ~ a.readtostring() >= b

• assert_read_to_string_ge_other!(a, b) ~ a.readtostring() >= b.readtostring()

assertcommand for process command comparisons

Using standard output a.k.a. stdout:

• assert_command_stdout_eq!(command, value) ~ String::from_utf8(command.output().unwrap().stdout).unwrap() == value

• assert_command_stdout_eq_other!(command, command) ~ String::fromutf8(command.output().unwrap().stdout).unwrap() == ng::fromutf8(command.output().unwrap().stdout).unwrap()

• assert_command_stdout_contains!(command, containee) ~ String::from_utf8(command.output().unwrap().stdout).unwrap().contains(containee)

• assert_command_stdout_matches!(command, matcher) ~ regex.captures(String::from_utf8(command.output().unwrap().stdout).ap())

Using standard error a.k.a. stderr:

• assert_command_stderr_eq!(command, value) ~ String::from_utf8(command.output().unwrap().stderr).unwrap() == value

• assert_command_stderr_eq_other!(command, command) ~ String::fromutf8(command.output().unwrap().stderr).unwrap() == ng::fromutf8(command.output().unwrap().stdout).unwrap()

• assert_command_stderr_contains!(command, containee) ~ String::from_utf8(command.output().unwrap().stderr).unwrap().contains(containee)

• assert_command_stderr_matches!(command, matcher) ~ regex.captures(String::from_utf8(command.output().unwrap().stderr).ap())

Tracking

• Package: assertables-rust-crate
• Version: 5.0.0
• Created: 2021-03-30T15:47:49Z
• Updated: 2022-02-28T15:45:38Z
• License: GPL-2.0-or-later or contact us for custom license
• Contact: Joel Parker Henderson (joel@sixarm.com)