1 files changed, 83 insertions, 0 deletions
diff --git a/test/unit/fileio_spec.lua b/test/unit/fileio_spec.lua
new file mode 100644
index 0000000000..180fc3c184
--- /dev/null
+++ b/test/unit/fileio_spec.lua
@@ -0,0 +1,83 @@
+local helpers = require("test.unit.helpers")
+--{:cimport, :internalize, :eq, :neq, :ffi, :lib, :cstr, :to_cstr} = require 'test.unit.helpers'
+
+local eq      = helpers.eq
+local ffi     = helpers.ffi
+local to_cstr = helpers.to_cstr
+
+local fileio = helpers.cimport("./src/nvim/fileio.h")
+
+describe('file_pat functions', function()
+  describe('file_pat_to_reg_pat', function()
+
+    local file_pat_to_reg_pat = function(pat)
+      local res = fileio.file_pat_to_reg_pat(to_cstr(pat), NULL, NULL, 0)
+      return ffi.string(res)
+    end
+
+    it('returns ^path$ regex for literal path input', function()
+      eq( '^path$', file_pat_to_reg_pat('path'))
+    end)
+
+    it('does not prepend ^ when there is a starting glob (*)', function()
+      eq('path$', file_pat_to_reg_pat('*path'))
+    end)
+
+    it('does not append $ when there is an ending glob (*)', function()
+      eq('^path', file_pat_to_reg_pat('path*'))
+    end)
+
+    it('does not include ^ or $ when surrounded by globs (*)', function()
+      eq('path', file_pat_to_reg_pat('*path*'))
+    end)
+
+    it('replaces the bash any character (?) with the regex any character (.)', function()
+     eq('^foo.bar$', file_pat_to_reg_pat('foo?bar'))
+    end)
+
+    it('replaces a glob (*) in the middle of a path with regex multiple any character (.*)',
+       function()
+      eq('^foo.*bar$', file_pat_to_reg_pat('foo*bar'))
+    end)
+
+    it([[unescapes \? to ?]], function()
+      eq('^foo?bar$', file_pat_to_reg_pat([[foo\?bar]]))
+    end)
+
+    it([[unescapes \% to %]], function()
+      eq('^foo%bar$', file_pat_to_reg_pat([[foo\%bar]]))
+    end)
+
+    it([[unescapes \, to ,]], function()
+      eq('^foo,bar$', file_pat_to_reg_pat([[foo\,bar]]))
+    end)
+
+    it([[unescapes '\ ' to ' ']], function()
+      eq('^foo bar$', file_pat_to_reg_pat([[foo\ bar]]))
+    end)
+
+    it([[escapes . to \.]], function()
+      eq([[^foo\.bar$]], file_pat_to_reg_pat('foo.bar'))
+    end)
+
+    it('Converts bash brace expansion {a,b} to regex options (a|b)', function()
+      eq([[^foo\(bar\|baz\)$]], file_pat_to_reg_pat('foo{bar,baz}'))
+    end)
+
+    it('Collapses multiple consecutive * into a single character', function()
+      eq([[^foo.*bar$]], file_pat_to_reg_pat('foo*******bar'))
+      eq([[foobar$]], file_pat_to_reg_pat('********foobar'))
+      eq([[^foobar]], file_pat_to_reg_pat('foobar********'))
+    end)
+
+    it('Does not escape ^', function()
+      eq([[^^blah$]], file_pat_to_reg_pat('^blah'))
+      eq([[^foo^bar$]], file_pat_to_reg_pat('foo^bar'))
+    end)
+
+    it('Does not escape $', function()
+      eq([[^blah$$]], file_pat_to_reg_pat('blah$'))
+      eq([[^foo$bar$]], file_pat_to_reg_pat('foo$bar'))
+    end)
+  end)
+end)