0.3.3 docs





    Oct 7, 2015



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    a coloful test framework for clojure inspired by clojure.test

    A unit testing framework.
    The core of the library is the "is" macro, which lets you make
    assertions of any arbitrary expression:
    (is (= 4 (+ 2 2)))
    (is (instance? Integer 256))
    (is (.startsWith "abcde" "ab"))
    You can type an "is" expression directly at the REPL, which will
    print a message if it fails.
        user> (is (= 5 (+ 2 2)))
        FAIL in  (:1)
        expected: (= 5 (+ 2 2))
          actual: (not (= 5 4))
    The "expected:" line shows you the original expression, and the
    "actual:" shows you what actually happened.  In this case, it
    shows that (+ 2 2) returned 4, which is not = to 5.  Finally, the
    "false" on the last line is the value returned from the
    expression.  The "is" macro always returns the result of the
    inner expression.
    There are two special assertions for testing exceptions.  The
    "(is (thrown? c ...))" form tests if an exception of class c is
    (is (thrown? ArithmeticException (/ 1 0))) 
    "(is (thrown-with-msg? c re ...))" does the same thing and also
    tests that the message on the exception matches the regular
    expression re:
    (is (thrown-with-msg? ArithmeticException #"Divide by zero"
                          (/ 1 0)))
    "is" takes an optional second argument, a string describing the
    assertion.  This message will be included in the error report.
    (is (= 5 (+ 2 2)) "Crazy arithmetic")
    In addition, you can document groups of assertions with the
    "testing" macro, which takes a string followed by any number of
    assertions.  The string will be included in failure reports.
    Calls to "testing" may be nested, and all of the strings will be
    joined together with spaces in the final report, in a style
    similar to RSpec <>
    (testing "Arithmetic"
      (testing "with positive integers"
        (is (= 4 (+ 2 2)))
        (is (= 7 (+ 3 4))))
      (testing "with negative integers"
        (is (= -4 (+ -2 -2)))
        (is (= -1 (+ 3 -4)))))
    Note that, unlike RSpec, the "testing" macro may only be used
    INSIDE a "deftest" or "with-test" form (see below).
    There are two ways to define tests.  The "with-test" macro takes
    a defn or def form as its first argument, followed by any number
    of assertions.  The tests will be stored as metadata on the
        (defn my-function [x y]
          (+ x y))
      (is (= 4 (my-function 2 2)))
      (is (= 7 (my-function 3 4))))
    As of Clojure SVN rev. 1221, this does not work with defmacro.
    The other way lets you define tests separately from the rest of
    your code, even in a different namespace:
    (deftest addition
      (is (= 4 (+ 2 2)))
      (is (= 7 (+ 3 4))))
    (deftest subtraction
      (is (= 1 (- 4 3)))
      (is (= 3 (- 7 4))))
    This creates functions named "addition" and "subtraction", which
    can be called like any other function.  Therefore, tests can be
    grouped and composed, in a style similar to the test framework in
    Peter Seibel's "Practical Common Lisp"
    (deftest arithmetic
    The names of the nested tests will be joined in a list, like
    "(arithmetic addition)", in failure reports.  You can use nested
    tests to set up a context shared by several tests.
    Run tests with the function "(run-tests namespaces...)":
    (run-tests 'your.namespace 'some.other.namespace)
    If you don't specify any namespaces, the current namespace is
    used.  To run all tests in all namespaces, use "(run-all-tests)".
    By default, these functions will search for all tests defined in
    a namespace and run them in an undefined order.  However, if you
    are composing tests, as in the "arithmetic" example above, you
    probably do not want the "addition" and "subtraction" tests run
    separately.  In that case, you must define a special function
    named "test-ns-hook" that runs your tests in the correct order:
    (defn test-ns-hook []
    Note: test-ns-hook prevents execution of fixtures (see below).
    You can bind the variable "*load-tests*" to false when loading or
    compiling code in production.  This will prevent any tests from
    being created by "with-test" or "deftest".
    Fixtures allow you to run code before and after tests, to set up
    the context in which tests should be run.
    A fixture is just a function that calls another function passed as
    an argument.  It looks like this:
    (defn my-fixture [f]
       Perform setup, establish bindings, whatever.
      (f)  Then call the function we were passed.
       Tear-down / clean-up code here.
    Fixtures are attached to namespaces in one of two ways.  "each"
    fixtures are run repeatedly, once for each test function created
    with "deftest" or "with-test".  "each" fixtures are useful for
    establishing a consistent before/after state for each test, like
    clearing out database tables.
    "each" fixtures can be attached to the current namespace like this:
    (use-fixtures :each fixture1 fixture2 ...)
    The fixture1, fixture2 are just functions like the example above.
    They can also be anonymous functions, like this:
    (use-fixtures :each (fn [f] setup... (f) cleanup...))
    The other kind of fixture, a "once" fixture, is only run once,
    around ALL the tests in the namespace.  "once" fixtures are useful
    for tasks that only need to be performed once, like establishing
    database connections, or for time-consuming tasks.
    Attach "once" fixtures to the current namespace like this:
    (use-fixtures :once fixture1 fixture2 ...)
    Note: Fixtures and test-ns-hook are mutually incompatible.  If you
    are using test-ns-hook, fixture functions will *never* be run.
    All the test reporting functions write to the var *test-out*.  By
    default, this is the same as *out*, but you can rebind it to any
    PrintWriter.  For example, it could be a file opened with
    You can extend the behavior of the "is" macro by defining new
    methods for the "assert-expr" multimethod.  These methods are
    called during expansion of the "is" macro, so they should return
    quoted forms to be evaluated.
    You can plug in your own test-reporting framework by rebinding
    the "report" function: (report event)
    The 'event' argument is a map.  It will always have a :type key,
    whose value will be a keyword signaling the type of event being
    reported.  Standard events with :type value of :pass, :fail, and
    :error are called when an assertion passes, fails, and throws an
    exception, respectively.  In that case, the event will also have
    the following keys:
      :expected   The form that was expected to be true
      :actual     A form representing what actually occurred
      :message    The string message given as an argument to 'is'
    The "testing" strings will be a list in "*testing-contexts*", and
    the vars being tested will be a list in "*testing-vars*".
    Your "report" function should wrap any printing calls in the
    "with-test-out" macro, which rebinds *out* to the current value
    of *test-out*.
    For additional event types, see the examples in the code.
    The README below is fetched from the published project artifact. Some relative links may be broken.


    a coloful test framework for clojure inspired by clojure.test

    Clojars Project


    • project.clj
    :dependencies [[acolfut "0.3.3"]]
    :plugins [[lein-colortest "0.3.0"]]
    • testfile.clj
    (ns acolfut.sweet-test
      (:require [acolfut.sweet :refer :all]))
    (deftest failure-test
      (testing "this is a failure test"
        (is= 0 1)))
    (deftest error-test
      (testing "this is a error test"
        (is= 0 (* 1 (:k {})))))
    (deftest success-test
      (testing "this is a success test"
        (is= 0 0)
        (isnot false)
        (isnot= 0 1)))


    Copyright © 2015 jihui

    Distributed under the Eclipse Public License, the same as Clojure.