;   Copyright (c) Rich Hickey. All rights reserved.

 ;   The use and distribution terms for this software are covered by the

 ;   Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)

 ;   which can be found in the file epl-v10.html at the root of this distribution.

 ;   By using this software in any fashion, you are agreeing to be bound by

 ;   the terms of this license.

 ;   You must not remove this notice, or any other, from this software.

 

 ;;; test.clj: test framework for Clojure

 

 ;; by Stuart Sierra

 ;; March 28, 2009

 

 ;; Thanks to Chas Emerick, Allen Rohner, and Stuart Halloway for

 ;; contributions and suggestions.

 

 (ns 

   ^{:author "Stuart Sierra, with contributions and suggestions by 

   Chas Emerick, Allen Rohner, and Stuart Halloway",

      :doc "A unit testing framework.

 

    ASSERTIONS

 

    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))

        false

 

    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

    thrown:

 

    (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)))

 

    DOCUMENTING TESTS

 

    \"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 <http://rspec.info/>

 

    (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).

 

 

    DEFINING TESTS

 

    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

    definition.

 

    (with-test

        (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.

    See http://code.google.com/p/clojure/issues/detail?id=51

 

    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\"

    <http://www.gigamonkeys.com/book/practical-building-a-unit-test-framework.html>

 

    (deftest arithmetic

      (addition)

      (subtraction))

 

    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.

 

 

    RUNNING 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 []

      (arithmetic))

 

 

    OMITTING TESTS FROM PRODUCTION CODE

 

    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 (new)

 

    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 ...)

 

 

    SAVING TEST OUTPUT TO A FILE

 

    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

    clojure.java.io/writer.

 

 

    EXTENDING TEST-IS (ADVANCED)

 

    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.

 "}

   clojure.test

   (:require [clojure.template :as temp]

             [clojure.stacktrace :as stack]))

 

 ;; Nothing is marked "private" here, so you can rebind things to plug

 ;; in your own testing or reporting frameworks.

 

 

 ;;; USER-MODIFIABLE GLOBALS

 

 (defonce

   ^{:doc "True by default.  If set to false, no test functions will

    be created by deftest, set-test, or with-test.  Use this to omit

    tests when compiling or loading production code."

     :added "1.1"}

   *load-tests* true)

 

 (def

  ^{:doc "The maximum depth of stack traces to print when an Exception

   is thrown during a test.  Defaults to nil, which means print the 

   complete stack trace."

    :added "1.1"}

  *stack-trace-depth* nil)

 

 

 ;;; GLOBALS USED BY THE REPORTING FUNCTIONS

 

 (def *report-counters* nil)	  ; bound to a ref of a map in test-ns

 

 (def *initial-report-counters*  ; used to initialize *report-counters*

      {:test 0, :pass 0, :fail 0, :error 0})

 

 (def *testing-vars* (list))  ; bound to hierarchy of vars being tested

 

 (def *testing-contexts* (list)) ; bound to hierarchy of "testing" strings

 

 (def *test-out* *out*)         ; PrintWriter for test reporting output

 

 (defmacro with-test-out

   "Runs body with *out* bound to the value of *test-out*."

   {:added "1.1"}

   [& body]

   `(binding [*out* *test-out*]

      ~@body))

 

 ;;; UTILITIES FOR REPORTING FUNCTIONS

 

 (defn file-position

   "Returns a vector [filename line-number] for the nth call up the

   stack.

 

   Deprecated in 1.2: The information needed for test reporting is

   now on :file and :line keys in the result map."

   {:added "1.1"

    :deprecated "1.2"}

   [n]

   (let [^StackTraceElement s (nth (.getStackTrace (new java.lang.Throwable)) n)]

     [(.getFileName s) (.getLineNumber s)]))

 

 (defn testing-vars-str

   "Returns a string representation of the current test.  Renders names

   in *testing-vars* as a list, then the source file and line of

   current assertion."

   {:added "1.1"}

   [m]

   (let [{:keys [file line]} m]

     (str

      ;; Uncomment to include namespace in failure report:

      ;;(ns-name (:ns (meta (first *testing-vars*)))) "/ "

      (reverse (map #(:name (meta %)) *testing-vars*))

      " (" file ":" line ")")))

 

 (defn testing-contexts-str

   "Returns a string representation of the current test context. Joins

   strings in *testing-contexts* with spaces."

   {:added "1.1"}

   []

   (apply str (interpose " " (reverse *testing-contexts*))))

 

 (defn inc-report-counter

   "Increments the named counter in *report-counters*, a ref to a map.

   Does nothing if *report-counters* is nil."

   {:added "1.1"}

   [name]

   (when *report-counters*

     (dosync (commute *report-counters* assoc name

                      (inc (or (*report-counters* name) 0))))))

 

 ;;; TEST RESULT REPORTING

 

 (defmulti

   ^{:doc "Generic reporting function, may be overridden to plug in

    different report formats (e.g., TAP, JUnit).  Assertions such as

    'is' call 'report' to indicate results.  The argument given to

    'report' will be a map with a :type key.  See the documentation at

    the top of test_is.clj for more information on the types of

    arguments for 'report'."

      :dynamic true

      :added "1.1"}

   report :type)

 

 (defn- file-and-line 

   [exception depth]

   (let [^StackTraceElement s (nth (.getStackTrace exception) depth)]

     {:file (.getFileName s) :line (.getLineNumber s)}))

 

 (defn do-report

   "Add file and line information to a test result and call report.

    If you are writing a custom assert-expr method, call this function

    to pass test results to report."

   {:added "1.2"}

   [m]

   (report

    (case

     (:type m)

     :fail (merge (file-and-line (new java.lang.Throwable) 1) m)

     :error (merge (file-and-line (:actual m) 0) m) 

     m)))

 

 (defmethod report :default [m]

   (with-test-out (prn m)))

 

 (defmethod report :pass [m]

   (with-test-out (inc-report-counter :pass)))

 

 (defmethod report :fail [m]

   (with-test-out

     (inc-report-counter :fail)

     (println "\nFAIL in" (testing-vars-str m))

     (when (seq *testing-contexts*) (println (testing-contexts-str)))

     (when-let [message (:message m)] (println message))

     (println "expected:" (pr-str (:expected m)))

     (println "  actual:" (pr-str (:actual m)))))

 

 (defmethod report :error [m]

   (with-test-out

    (inc-report-counter :error)

    (println "\nERROR in" (testing-vars-str m))

    (when (seq *testing-contexts*) (println (testing-contexts-str)))

    (when-let [message (:message m)] (println message))

    (println "expected:" (pr-str (:expected m)))

    (print "  actual: ")

    (let [actual (:actual m)]

      (if (instance? Throwable actual)

        (stack/print-cause-trace actual *stack-trace-depth*)

        (prn actual)))))

 

 (defmethod report :summary [m]

   (with-test-out

    (println "\nRan" (:test m) "tests containing"

             (+ (:pass m) (:fail m) (:error m)) "assertions.")

    (println (:fail m) "failures," (:error m) "errors.")))

 

 (defmethod report :begin-test-ns [m]

   (with-test-out

    (println "\nTesting" (ns-name (:ns m)))))

 

 ;; Ignore these message types:

 (defmethod report :end-test-ns [m])

 (defmethod report :begin-test-var [m])

 (defmethod report :end-test-var [m])

 

 

 

 ;;; UTILITIES FOR ASSERTIONS

 

 (defn get-possibly-unbound-var

   "Like var-get but returns nil if the var is unbound."

   {:added "1.1"}

   [v]

   (try (var-get v)

        (catch IllegalStateException e

          nil)))

 

 (defn function?

   "Returns true if argument is a function or a symbol that resolves to

   a function (not a macro)."

   {:added "1.1"}

   [x]

   (if (symbol? x)

     (when-let [v (resolve x)]

       (when-let [value (get-possibly-unbound-var v)]

         (and (fn? value)

              (not (:macro (meta v))))))

     (fn? x)))

 

 (defn assert-predicate

   "Returns generic assertion code for any functional predicate.  The

   'expected' argument to 'report' will contains the original form, the

   'actual' argument will contain the form with all its sub-forms

   evaluated.  If the predicate returns false, the 'actual' form will

   be wrapped in (not...)."

   {:added "1.1"}

   [msg form]

   (let [args (rest form)

         pred (first form)]

     `(let [values# (list ~@args)

            result# (apply ~pred values#)]

        (if result#

          (do-report {:type :pass, :message ~msg,

                   :expected '~form, :actual (cons ~pred values#)})

          (do-report {:type :fail, :message ~msg,

                   :expected '~form, :actual (list '~'not (cons '~pred values#))}))

        result#)))

 

 (defn assert-any

   "Returns generic assertion code for any test, including macros, Java

   method calls, or isolated symbols."

   {:added "1.1"}

   [msg form]

   `(let [value# ~form]

      (if value#

        (do-report {:type :pass, :message ~msg,

                 :expected '~form, :actual value#})

        (do-report {:type :fail, :message ~msg,

                 :expected '~form, :actual value#}))

      value#))

 

 

 

 ;;; ASSERTION METHODS

 

 ;; You don't call these, but you can add methods to extend the 'is'

 ;; macro.  These define different kinds of tests, based on the first

 ;; symbol in the test expression.

 

 (defmulti assert-expr 

   (fn [msg form]

     (cond

       (nil? form) :always-fail

       (seq? form) (first form)

       :else :default)))

 

 (defmethod assert-expr :always-fail [msg form]

   ;; nil test: always fail

   `(do-report {:type :fail, :message ~msg}))

 

 (defmethod assert-expr :default [msg form]

   (if (and (sequential? form) (function? (first form)))

     (assert-predicate msg form)

     (assert-any msg form)))

 

 (defmethod assert-expr 'instance? [msg form]

   ;; Test if x is an instance of y.

   `(let [klass# ~(nth form 1)

          object# ~(nth form 2)]

      (let [result# (instance? klass# object#)]

        (if result#

          (do-report {:type :pass, :message ~msg,

                   :expected '~form, :actual (class object#)})

          (do-report {:type :fail, :message ~msg,

                   :expected '~form, :actual (class object#)}))

        result#)))

 

 (defmethod assert-expr 'thrown? [msg form]

   ;; (is (thrown? c expr))

   ;; Asserts that evaluating expr throws an exception of class c.

   ;; Returns the exception thrown.

   (let [klass (second form)

         body (nthnext form 2)]

     `(try ~@body

           (do-report {:type :fail, :message ~msg,

                    :expected '~form, :actual nil})

           (catch ~klass e#

             (do-report {:type :pass, :message ~msg,

                      :expected '~form, :actual e#})

             e#))))

 

 (defmethod assert-expr 'thrown-with-msg? [msg form]

   ;; (is (thrown-with-msg? c re expr))

   ;; Asserts that evaluating expr throws an exception of class c.

   ;; Also asserts that the message string of the exception matches

   ;; (with re-find) the regular expression re.

   (let [klass (nth form 1)

         re (nth form 2)

         body (nthnext form 3)]

     `(try ~@body

           (do-report {:type :fail, :message ~msg, :expected '~form, :actual nil})

           (catch ~klass e#

             (let [m# (.getMessage e#)]

               (if (re-find ~re m#)

                 (do-report {:type :pass, :message ~msg,

                          :expected '~form, :actual e#})

                 (do-report {:type :fail, :message ~msg,

                          :expected '~form, :actual e#})))

             e#))))

 

 

 (defmacro try-expr

   "Used by the 'is' macro to catch unexpected exceptions.

   You don't call this."

   {:added "1.1"}

   [msg form]

   `(try ~(assert-expr msg form)

         (catch Throwable t#

           (do-report {:type :error, :message ~msg,

                       :expected '~form, :actual t#}))))

 

 

 

 ;;; ASSERTION MACROS

 

 ;; You use these in your tests.

 

 (defmacro is

   "Generic assertion macro.  'form' is any predicate test.

   'msg' is an optional message to attach to the assertion.

   

   Example: (is (= 4 (+ 2 2)) \"Two plus two should be 4\")

 

   Special forms:

 

   (is (thrown? c body)) checks that an instance of c is thrown from

   body, fails if not; then returns the thing thrown.

 

   (is (thrown-with-msg? c re body)) checks that an instance of c is

   thrown AND that the message on the exception matches (with

   re-find) the regular expression re."

   {:added "1.1"} 

   ([form] `(is ~form nil))

   ([form msg] `(try-expr ~msg ~form)))

 

 (defmacro are

   "Checks multiple assertions with a template expression.

   See clojure.template/do-template for an explanation of

   templates.

 

   Example: (are [x y] (= x y)  

                 2 (+ 1 1)

                 4 (* 2 2))

   Expands to: 

            (do (is (= 2 (+ 1 1)))

                (is (= 4 (* 2 2))))

 

   Note: This breaks some reporting features, such as line numbers."

   {:added "1.1"}

   [argv expr & args]

   `(temp/do-template ~argv (is ~expr) ~@args))

 

 (defmacro testing

   "Adds a new string to the list of testing contexts.  May be nested,

   but must occur inside a test function (deftest)."

   {:added "1.1"}

   [string & body]

   `(binding [*testing-contexts* (conj *testing-contexts* ~string)]

      ~@body))

 

 

 

 ;;; DEFINING TESTS

 

 (defmacro with-test

   "Takes any definition form (that returns a Var) as the first argument.

   Remaining body goes in the :test metadata function for that Var.

 

   When *load-tests* is false, only evaluates the definition, ignoring

   the tests."

   {:added "1.1"}

   [definition & body]

   (if *load-tests*

     `(doto ~definition (alter-meta! assoc :test (fn [] ~@body)))

     definition))

 

 

 (defmacro deftest

   "Defines a test function with no arguments.  Test functions may call

   other tests, so tests may be composed.  If you compose tests, you

   should also define a function named test-ns-hook; run-tests will

   call test-ns-hook instead of testing all vars.

 

   Note: Actually, the test body goes in the :test metadata on the var,

   and the real function (the value of the var) calls test-var on

   itself.

 

   When *load-tests* is false, deftest is ignored."

   {:added "1.1"}

   [name & body]

   (when *load-tests*

     `(def ~(vary-meta name assoc :test `(fn [] ~@body))

           (fn [] (test-var (var ~name))))))

 

 (defmacro deftest-

   "Like deftest but creates a private var."

   {:added "1.1"}

   [name & body]

   (when *load-tests*

     `(def ~(vary-meta name assoc :test `(fn [] ~@body) :private true)

           (fn [] (test-var (var ~name))))))

 

 

 (defmacro set-test

   "Experimental.

   Sets :test metadata of the named var to a fn with the given body.

   The var must already exist.  Does not modify the value of the var.

 

   When *load-tests* is false, set-test is ignored."

   {:added "1.1"}

   [name & body]

   (when *load-tests*

     `(alter-meta! (var ~name) assoc :test (fn [] ~@body))))

 

 

 

 ;;; DEFINING FIXTURES

 

 (defn- add-ns-meta

   "Adds elements in coll to the current namespace metadata as the

   value of key."

   {:added "1.1"}

   [key coll]

   (alter-meta! *ns* assoc key coll))

 

 (defmulti use-fixtures

   "Wrap test runs in a fixture function to perform setup and

   teardown. Using a fixture-type of :each wraps every test

   individually, while:once wraps the whole run in a single function."

   {:added "1.1"}

   (fn [fixture-type & args] fixture-type))

 

 (defmethod use-fixtures :each [fixture-type & args]

   (add-ns-meta ::each-fixtures args))

 

 (defmethod use-fixtures :once [fixture-type & args]

   (add-ns-meta ::once-fixtures args))

 

 (defn- default-fixture

   "The default, empty, fixture function.  Just calls its argument."

   {:added "1.1"}

   [f]

   (f))

 

 (defn compose-fixtures

   "Composes two fixture functions, creating a new fixture function

   that combines their behavior."

   {:added "1.1"}

   [f1 f2]

   (fn [g] (f1 (fn [] (f2 g)))))

 

 (defn join-fixtures

   "Composes a collection of fixtures, in order.  Always returns a valid

   fixture function, even if the collection is empty."

   {:added "1.1"}

   [fixtures]

   (reduce compose-fixtures default-fixture fixtures))

 

 

 

 

 ;;; RUNNING TESTS: LOW-LEVEL FUNCTIONS

 

 (defn test-var

   "If v has a function in its :test metadata, calls that function,

   with *testing-vars* bound to (conj *testing-vars* v)."

   {:dynamic true, :added "1.1"}

   [v]

   (when-let [t (:test (meta v))]

     (binding [*testing-vars* (conj *testing-vars* v)]

       (do-report {:type :begin-test-var, :var v})

       (inc-report-counter :test)

       (try (t)

            (catch Throwable e

              (do-report {:type :error, :message "Uncaught exception, not in assertion."

                       :expected nil, :actual e})))

       (do-report {:type :end-test-var, :var v}))))

 

 (defn test-all-vars

   "Calls test-var on every var interned in the namespace, with fixtures."

   {:added "1.1"}

   [ns]

   (let [once-fixture-fn (join-fixtures (::once-fixtures (meta ns)))

         each-fixture-fn (join-fixtures (::each-fixtures (meta ns)))]

     (once-fixture-fn

      (fn []

        (doseq [v (vals (ns-interns ns))]

          (when (:test (meta v))

            (each-fixture-fn (fn [] (test-var v)))))))))

 

 (defn test-ns

   "If the namespace defines a function named test-ns-hook, calls that.

   Otherwise, calls test-all-vars on the namespace.  'ns' is a

   namespace object or a symbol.

 

   Internally binds *report-counters* to a ref initialized to

   *inital-report-counters*.  Returns the final, dereferenced state of

   *report-counters*."

   {:added "1.1"}

   [ns]

   (binding [*report-counters* (ref *initial-report-counters*)]

     (let [ns-obj (the-ns ns)]

       (do-report {:type :begin-test-ns, :ns ns-obj})

       ;; If the namespace has a test-ns-hook function, call that:

       (if-let [v (find-var (symbol (str (ns-name ns-obj)) "test-ns-hook"))]

 	((var-get v))

         ;; Otherwise, just test every var in the namespace.

         (test-all-vars ns-obj))

       (do-report {:type :end-test-ns, :ns ns-obj}))

     @*report-counters*))

 

 

 

 ;;; RUNNING TESTS: HIGH-LEVEL FUNCTIONS

 

 (defn run-tests

   "Runs all tests in the given namespaces; prints results.

   Defaults to current namespace if none given.  Returns a map

   summarizing test results."

   {:added "1.1"}

   ([] (run-tests *ns*))

   ([& namespaces]

      (let [summary (assoc (apply merge-with + (map test-ns namespaces))

                      :type :summary)]

        (do-report summary)

        summary)))

 

 (defn run-all-tests

   "Runs all tests in all namespaces; prints results.

   Optional argument is a regular expression; only namespaces with

   names matching the regular expression (with re-matches) will be

   tested."

   {:added "1.1"}

   ([] (apply run-tests (all-ns)))

   ([re] (apply run-tests (filter #(re-matches re (name (ns-name %))) (all-ns)))))

 

 (defn successful?

   "Returns true if the given test summary indicates all tests

   were successful, false otherwise."

   {:added "1.1"}

   [summary]

   (and (zero? (:fail summary 0))

        (zero? (:error summary 0))))