tests: auto disable network related tests (#141)

* added .editorconfig

to ease contributing to the project

* tests: autodisable test in absence of curl

When running the test in the nix sandbox, there is no internet access
and this specific test fails.
The best solution would probably be to download these files only when
they dont exist.
The current fix skips the test when curl is not available and allows to move on.

.editorconfig

@@ -0,0 +1,15 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2
+tab_width = 8
+end_of_line = lf
+insert_final_newline = true
+
+[*.{c,h,in,lua}]
+max_line_length = 100
+
+[{Makefile,**/Makefile,runtime/doc/*.txt}]
+indent_style = tab
+indent_size = 8

test/auto/db_spec.lua

@@ -546,6 +546,10 @@ describe("sqlite.db", function()
   end)
 
   describe(":select", function()
+    if vim.fn.executable("curl") then
+        pending("'curl' program is not available")
+        return
+    end
     local db = sql:open(path)
     local posts, users