verbose unit test log so that we have a clue when there is segfault

.travis.yml

@@ -46,6 +46,7 @@ install:
   - cp /etc/luarocks/config.lua $HOME/.luarocks/config.lua
   - echo "wrap_bin_scripts = false" >> $HOME/.luarocks/config.lua
   - travis_retry luarocks --local install lua_cliargs
+  - travis_retry luarocks --local install ansicolors
   - travis_retry luarocks --local install busted
   #- travis_retry luarocks --local install busted 1.11.1-1
   #- mv -f $HOME/.luarocks/bin/busted_bootstrap $HOME/.luarocks/bin/busted

Makefile

@@ -102,7 +102,7 @@ $(INSTALL_DIR)/koreader/.luacov:
 		ln -sf ../../.luacov $(INSTALL_DIR)/koreader
 
 testfront: $(INSTALL_DIR)/koreader/.busted
-	cd $(INSTALL_DIR)/koreader && ./luajit $(shell which busted) --exclude-tags=notest
+	cd $(INSTALL_DIR)/koreader && ./luajit $(shell which busted) -o verbose_print --exclude-tags=notest
 
 test:
 	$(MAKE) -C $(KOR_BASE) test

spec/unit/verbose_print.lua

@@ -0,0 +1,22 @@
+-- from Mashape/kong/spec/busted-print.lua
+local ansicolors = require 'ansicolors'
+
+return function(options)
+    local handler = require 'busted.outputHandlers.utfTerminal'(options)
+
+    handler.fileStart = function(file)
+        io.write('\n' .. ansicolors('%{cyan}' .. file.name) .. ':')
+    end
+
+    handler.testStart = function(element, parent, status, debug)
+        io.write('\n  ' .. handler.getFullName(element) .. ' ... ')
+        io.flush()
+    end
+
+    local busted = require 'busted'
+
+    busted.subscribe({ 'file', 'start' }, handler.fileStart)
+    busted.subscribe({ 'test', 'start' }, handler.testStart)
+
+    return handler
+end