Add test for runner

Author: mmelentiev-mail

test/runner_test.lua

@@ -0,0 +1,28 @@
+local t = require('luatest')
+local g = t.group('runner')
+
+local helper = require('test.helper')
+
+g.test_run_pass = function()
+    local result = helper.run_suite(function(lu2)
+        lu2.group('test').test = function() t.assertEquals(1, 1) end
+    end)
+
+    t.assertEquals(result, 0)
+end
+
+g.test_run_fail = function()
+    local result = helper.run_suite(function(lu2)
+        lu2.group('test').test = function() t.assertEquals(1, 0) end
+    end)
+
+    t.assertEquals(result, 1)
+end
+
+g.test_run_error = function()
+    local result = helper.run_suite(function(lu2)
+        lu2.group('test').test = function() error('custom_error') end
+    end)
+
+    t.assertEquals(result, 1)
+end