gnu: Add go-github-com-tj-assert.

* gnu/packages/golang-check.scm (go-github-com-tj-assert): New variable.

Change-Id: Iaacb9cdf7a6314bf4384a50593b3d6279b6a164f

gnu/packages/golang-check.scm

@@ -998,6 +998,33 @@ strings must or must not be sent to a given local UDP listener.")
 such as readers and writers that fail after N consecutive reads/writes.")
     (license license:expat)))
 
+(define-public go-github-com-tj-assert
+  (package
+    (name "go-github-com-tj-assert")
+    (version "0.0.3")
+    (source
+     (origin
+       (method git-fetch)
+       (uri (git-reference
+             (url "https://github.com/tj/assert")
+             (commit (string-append "v" version))))
+       (file-name (git-file-name name version))
+       (sha256
+        (base32 "1j5swk3fjq1h5fpqkipddz2ccnbidr7qrpm5dpdaflg9q5jnc673"))))
+    (build-system go-build-system)
+    (arguments
+     (list
+      #:import-path "github.com/tj/assert"))
+    (propagated-inputs
+     (list go-github-com-stretchr-testify))
+    (home-page "https://github.com/tj/assert")
+    (synopsis "Golang @code{testify/assert} but as @code{testify/require}")
+    (description
+     "Package assert implements the same assertions as the
+@url{https://github.com/stretchr/testify, assert} package but stops test
+execution when a test fails.")
+    (license license:expat)))
+
 (define-public go-github.com-smartystreets-assertions
   (package
     (name "go-github.com-smartystreets-assertions")