Make test work with upstream cbehave
(tinydir bundles a modified version)

diff --git a/tests/file_open_test.c b/tests/file_open_test.c
index 09b856e..92b13ca 100644
--- a/tests/file_open_test.c
+++ b/tests/file_open_test.c
@@ -4,6 +4,11 @@
 #include "cbehave.h"
 #include "util.h"
 
+#define ASSERT(cond, ret) \
+if (!(cond)) {\
+    cbehave_feature_return(__FILE__, __LINE__, ret, _state); \
+    goto _feature_over; \
+}\
 
 FEATURE(file_open, "File open")
 	SCENARIO("Open file in current directory")
@@ -34,4 +39,7 @@ FEATURE(file_open, "File open")
 	SCENARIO_END
 FEATURE_END
 
-CBEHAVE_RUN("File open:", TEST_FEATURE(file_open))
+int main(void) {
+	cbehave_feature _cfeatures[] = {{feature_idx(file_open)}};
+	return cbehave_runner("File open:", _cfeatures);
+}
ption>
<option value='koszko-scripts'>koszko-scripts</option>
</select> <input type='submit' value='switch'/></form></td></tr>
<tr><td class='sub'>Wojtek's customized Guix</td><td class='sub right'></td></tr></table>
<table class='tabs'><tr><td>
<a href='/guix/about/'>about</a><a href='/guix/'>summary</a><a href='/guix/refs/?id=aec92d0be43ccb50735a1916fc8be63520b44bd8'>refs</a><a class='active' href='/guix/log/gnu/services/pm.scm'>log</a><a href='/guix/tree/gnu/services/pm.scm?id=aec92d0be43ccb50735a1916fc8be63520b44bd8'>tree</a><a href='/guix/commit/gnu/services/pm.scm?id=aec92d0be43ccb50735a1916fc8be63520b44bd8'>commit</a><a href='/guix/diff/gnu/services/pm.scm?id=aec92d0be43ccb50735a1916fc8be63520b44bd8'>diff</a></td><td class='form'><form class='right' method='get' action='/guix/log/gnu/services/pm.scm'>
<input type='hidden' name='id' value='aec92d0be43ccb50735a1916fc8be63520b44bd8'/><select name='qt'>
<option value='grep'>log msg</option>
<option value='author'>author</option>
<option value='committer'>committer</option>
<option value='range'>range</option>
</select>
<input class='txt' type='search' size='10' name='q' value=''/>
<input type='submit' value='search'/>
</form>
</td></tr></table>
<div class='path'>path: <a href='/guix/log/?id=aec92d0be43ccb50735a1916fc8be63520b44bd8'>root</a>/<a href='/guix/log/gnu?id=aec92d0be43ccb50735a1916fc8be63520b44bd8'>gnu</a>/<a href='/guix/log/gnu/services?id=aec92d0be43ccb50735a1916fc8be63520b44bd8'>services</a>/<a href='/guix/log/gnu/services/pm.scm?id=aec92d0be43ccb50735a1916fc8be63520b44bd8'>pm.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/gnu/services/pm.scm?id=aec92d0be43ccb50735a1916fc8be63520b44bd8&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2020-02-02 10:42:16 +0100'>2020-02-02</span></td><td><a href='/guix/commit/gnu/services/pm.scm?id=8a890f3c40f698c976dc2a759ccc9c11641bd4f6'>gnu: tlp: Update to 1.3.0.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/linux.scm (tlp): Update to 1.3.0.
[source]: Hard-code name in origin URI.
[native-inputs]: Add "shellcheck".
[arguments]: Activate some tests.  Update environment variables.  Ignore
tlp-rdw man pages.
* gnu/services/pm.scm (tlp-activation): Update configuration file name.
</span></span></td><td>Nicolas Goaziou</td></tr>