add tests for htmlescaping

Makefile

@@ -18,10 +18,12 @@ generate: build
 		./tests/custom_map_key_type.go \
 		./tests/embedded_type.go \
 		./tests/reference_to_pointer.go \
+		./tests/html.go \
 
 	bin/easyjson -all ./tests/data.go
 	bin/easyjson -all ./tests/nothing.go
 	bin/easyjson -all ./tests/errors.go
+	bin/easyjson -all ./tests/html.go
 	bin/easyjson -snake_case ./tests/snake.go
 	bin/easyjson -omit_empty ./tests/omitempty.go
 	bin/easyjson -build_tags=use_easyjson ./benchmark/data.go

tests/html.go

@@ -0,0 +1,5 @@
+package tests
+
+type Struct struct {
+	Test string
+}

tests/html_test.go

@@ -0,0 +1,33 @@
+package tests
+
+import (
+	"testing"
+
+	"github.com/mailru/easyjson/jwriter"
+)
+
+func TestHTML(t *testing.T) {
+	s := Struct{
+		Test: "<b>test</b>",
+	}
+
+	j := jwriter.Writer{
+		NoEscapeHTML: false,
+	}
+	s.MarshalEasyJSON(&j)
+
+	data, _ := j.BuildBytes()
+
+	if string(data) != `{"Test":"\u003cb\u003etest\u003c/b\u003e"}` {
+		t.Fatal("EscapeHTML error:", string(data))
+	}
+
+	j.NoEscapeHTML = true
+	s.MarshalEasyJSON(&j)
+
+	data, _ = j.BuildBytes()
+
+	if string(data) != `{"Test":"<b>test</b>"}` {
+		t.Fatal("NoEscapeHTML error:", string(data))
+	}
+}