Add some tests for IgnoreFiles

And log error on invalid regexp.

See #1189

source/content_directory_test.go

@@ -1,29 +1,41 @@
 package source
 
 import (
+	"github.com/spf13/viper"
 	"testing"
 )
 
 func TestIgnoreDotFilesAndDirectories(t *testing.T) {
+	viper.Reset()
+	defer viper.Reset()
+
 	tests := []struct {
-		path   string
-		ignore bool
+		path                string
+		ignore              bool
+		ignoreFilesRegexpes interface{}
 	}{
-		{".foobar/", true},
-		{"foobar/.barfoo/", true},
-		{"barfoo.md", false},
-		{"foobar/barfoo.md", false},
-		{"foobar/.barfoo.md", true},
-		{".barfoo.md", true},
-		{".md", true},
-		{"", true},
-		{"foobar/barfoo.md~", true},
-		{".foobar/barfoo.md~", true},
-		{"foobar~/barfoo.md", false},
-		{"foobar/bar~foo.md", false},
+		{".foobar/", true, nil},
+		{"foobar/.barfoo/", true, nil},
+		{"barfoo.md", false, nil},
+		{"foobar/barfoo.md", false, nil},
+		{"foobar/.barfoo.md", true, nil},
+		{".barfoo.md", true, nil},
+		{".md", true, nil},
+		{"", true, nil},
+		{"foobar/barfoo.md~", true, nil},
+		{".foobar/barfoo.md~", true, nil},
+		{"foobar~/barfoo.md", false, nil},
+		{"foobar/bar~foo.md", false, nil},
+		{"foobar/foo.md", true, []string{"\\.md$", "\\.boo$"}},
+		{"foobar/foo.html", false, []string{"\\.md$", "\\.boo$"}},
+		{"foobar/foo.md", true, []string{"^foo"}},
+		{"foobar/foo.md", false, []string{"*", "\\.md$", "\\.boo$"}},
 	}
 
 	for _, test := range tests {
+
+		viper.Set("ignoreFiles", test.ignoreFilesRegexpes)
+
 		if ignored := isNonProcessablePath(test.path); test.ignore != ignored {
 			t.Errorf("File not ignored.  Expected: %t, got: %t", test.ignore, ignored)
 		}