Tests breaks after I imported a single library - clojure

Question

I'm using clojure new CLI to create a project and to run the tests I do:
clojure -M:test:runner
this is my test
(ns auth.authorize-test
(:require [clojure.test :refer :all]
[auth.authorize :as auth]))
(deftest a-test
(testing "FIXME, I fail."
(is (= 0 0))))
;; this is working good and responding:
;; Ran 1 tests containing 1 assertions.
This project will read from stdin. My first step is to get data from a file and then write it to the stdout for testing. Because of this I want import BufferedReader to read the file:
(ns auth.authorize-test
(:require [clojure.test :refer :all]
[auth.authorize :as auth])
;; I just added this line
(:import (java.io BufferedReader))
(deftest a-test
(testing "FIXME, I fail."
(is (= 0 0))))
;; This is not working and it's returning
;; Ran 0 tests containing 0 assertions.
So now is no longer doing any tests.

Answer 1

The most likely reason is that you have some sort of syntax error in your code.
Your code should be:
(ns auth.authorize-test
(:require [clojure.test :refer :all]
[auth.authorize :as auth])
;; I just added this line
(:import (java.io BufferedReader)))
Note: three closing ) there, not two like you have in your code.
Here's what I just did:
(! 734)-> clojure -X:new :name auth.authorize
Generating a project called auth.authorize based on the 'lib' template.
The lib template is intended for library projects, not applications.
(! 735)-> cd auth.authorize/
(! 736)-> vi test/auth/authorize_test.clj
# to change the test to (= 0 0)
(! 737)-> cat test/auth/authorize_test.clj
(ns auth.authorize-test
(:require [clojure.test :refer :all]
[auth.authorize :refer :all]))
(deftest a-test
(testing "FIXME, I fail."
(is (= 0 0))))
(! 738)-> clojure -M:test:runner
Running tests in #{"test"}
Testing auth.authorize-test
Ran 1 tests containing 1 assertions.
0 failures, 0 errors.
(! 739)-> vi test/auth/authorize_test.clj
# add in the :import
(! 740)-> cat test/auth/authorize_test.clj
(ns auth.authorize-test
(:require [clojure.test :refer :all]
[auth.authorize :refer :all])
(:import (java.io BufferedReader)))
(deftest a-test
(testing "FIXME, I fail."
(is (= 0 0))))
(! 741)-> clojure -M:test:runner
Running tests in #{"test"}
Testing auth.authorize-test
Ran 1 tests containing 1 assertions.
0 failures, 0 errors.
And you can see that it runs the test correctly.

Answer 2

Adding to Sean's answer, this is what the compiler sees:
(ns auth.authorize-test
(:require [clojure.test :refer :all]
[auth.authorize :as auth])
(:import (java.io BufferedReader)) ; should terminate ns form here with another `)` char
; Due to missing `)` above, this whole `deftest` form is inside the 'ns' form
; and is ignored w/o an error msg (you could consider this a compiler defect)
(deftest a-test
(testing "FIXME, I fail."
(is (= 0 0))))
) ; end of ns form - should be after `import` keyword
So you see, the missing ) on the :import line is the cause of the problem. It causes the deftest form to be inside of the ns form, which makes no sense and is a syntax error. I'm surprised the compiler doesn't have an error for this, which I would consider a compiler bug/defect/problem, since it just silently fails instead of printing an error message of some sort.
Update
Perhaps you are using an older release of Clojure? I just tried it with this config:
--------------------------------------
Clojure 1.10.2-alpha1 Java 15
--------------------------------------
and I get an error:
Syntax error macroexpanding clojure.core/ns at (tst/demo/core.clj:1:1).
deftest - failed: #{:refer-clojure} at: [:ns-clauses :refer-clojure :clause] spec: :clojure.core.specs.alpha/ns-refer-clojure
deftest - failed: #{:require} at: [:ns-clauses :require :clause] spec: :clojure.core.specs.alpha/ns-require
deftest - failed: #{:import} at: [:ns-clauses :import :clause] spec: :clojure.core.specs.alpha/ns-import
deftest - failed: #{:use} at: [:ns-clauses :use :clause] spec: :clojure.core.specs.alpha/ns-use
deftest - failed: #{:refer} at: [:ns-clauses :refer :clause] spec: :clojure.core.specs.alpha/ns-refer
deftest - failed: #{:load} at: [:ns-clauses :load :clause] spec: :clojure.core.specs.alpha/ns-load
deftest - failed: #{:gen-class} at: [:ns-clauses :gen-class :clause] spec: :clojure.core.specs.alpha/ns-gen-class
Full report at:
/tmp/clojure-8770599721946785921.edn
Tests failed.
and the /tmp/clojure.....edn file looks like:
{:clojure.main/message
"Syntax error macroexpanding clojure.core/ns at (tst/demo/core.clj:1:1).\ndeftest - failed: #{:refer-clojure} at: [:ns-clauses :refer-clojure :clause] spec: :clojure.core.specs.alpha/ns-refer-clojure\ndeftest - failed: #{:require} at: [:ns-clauses :require :clause] spec: :clojure.core.specs.alpha/ns-require\ndeftest - failed: #{:import} at: [:ns-clauses :import :clause] spec: :clojure.core.specs.alpha/ns-import\ndeftest - failed: #{:use} at: [:ns-clauses :use :clause] spec: :clojure.core.specs.alpha/ns-use\ndeftest - failed: #{:refer} at: [:ns-clauses :refer :clause] spec: :clojure.core.specs.alpha/ns-refer\ndeftest - failed: #{:load} at: [:ns-clauses :load :clause] spec: :clojure.core.specs.alpha/ns-load\ndeftest - failed: #{:gen-class} at: [:ns-clauses :gen-class :clause] spec: :clojure.core.specs.alpha/ns-gen-class\n",
:clojure.main/triage
{:clojure.error/cause
"Call to clojure.core/ns did not conform to spec.",
:clojure.error/phase :macro-syntax-check,
:clojure.error/symbol clojure.core/ns,
:clojure.error/column 1,
:clojure.error/line 1,
:clojure.error/class clojure.lang.ExceptionInfo,
:clojure.error/source "core.clj",
:clojure.error/spec
{:clojure.spec.alpha/problems
({:path [:ns-clauses :refer-clojure :clause],
:pred #{:refer-clojure},
:val deftest,
:via
[:clojure.core.specs.alpha/ns-form
:clojure.core.specs.alpha/ns-refer-clojure
:clojure.core.specs.alpha/ns-refer-clojure],
:in [3 0]}
{:path [:ns-clauses :require :clause],
:pred #{:require},
:val deftest,
:via
[:clojure.core.specs.alpha/ns-form
:clojure.core.specs.alpha/ns-require
:clojure.core.specs.alpha/ns-require],
:in [3 0]}
{:path [:ns-clauses :import :clause],
:pred #{:import},
:val deftest,
:via
[:clojure.core.specs.alpha/ns-form
:clojure.core.specs.alpha/ns-import
:clojure.core.specs.alpha/ns-import],
:in [3 0]}
....
So it appears the current version of Clojure (which uses clojure.spec to check ns forms) does detect the error in the code.