Added more tests

re_test.go

@@ -460,6 +460,11 @@ var reTests = []struct {
 	{`\x00ff`, nil, "\u00ff", []Group{}},
 	{`\x{0000ff}`, nil, "\u00ff", []Group{{0, 1}}},
 	{`\x{0000FF}`, nil, "\u00ff", []Group{{0, 1}}},
+	{"\t\n\v\r\f\a", nil, "\t\n\v\r\f\a", []Group{{0, 6}}},
+	{`\t\n\v\r\f\a`, nil, "\t\n\v\r\f\a", []Group{{0, 6}}},
+	{`[\t][\n][\v][\r][\f][\b]`, nil, "\t\n\v\r\f\b", []Group{{0, 6}}},
+	{`.*d`, nil, "abc\nabd", []Group{{4, 7}}},
+	{`(`, nil, "-", nil},
 
 	// Todo - add numeric range tests
 }
@@ -606,6 +611,7 @@ var groupTests = []struct {
 
 	{`([\s]*)([\S]*)([\s]*)`, nil, ` testing!1972`, []Match{[]Group{{0, 13}, {0, 1}, {1, 13}, {13, 13}}, []Group{{13, 13}, {13, 13}, {13, 13}, {13, 13}}}},
 	{`(\s*)(\S*)(\s*)`, nil, ` testing!1972`, []Match{[]Group{{0, 13}, {0, 1}, {1, 13}, {13, 13}}, []Group{{13, 13}, {13, 13}, {13, 13}, {13, 13}}}},
+	{`(([a-z]+):)?([a-z]+)$`, nil, `smil`, []Match{[]Group{{0, 4}, {-1, -1}, {-1, -1}, {0, 4}}}},
 }
 
 func TestFindAllMatches(t *testing.T) {