Add unit test and fix

testing.odin

@@ -0,0 +1,99 @@
+package template
+
+import "core:testing"
+
+@(test)
+test1 :: proc(t: ^testing.T){
+	fmt := "{"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp==fmt, tmp)
+}
+@(test)
+test2 :: proc(t: ^testing.T){
+	fmt := "}"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp==fmt, tmp)
+}
+@(test)
+test3 :: proc(t: ^testing.T){
+	fmt := "{{"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp==fmt, tmp)
+}
+@(test)
+test4 :: proc(t: ^testing.T){
+	fmt := "{{}"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp==fmt, tmp)
+}
+@(test)
+test5 :: proc(t: ^testing.T){
+	fmt := "{{}}"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp=="", tmp)
+}
+@(test)
+test6 :: proc(t: ^testing.T){
+	fmt := "{{foo}}"
+
+	dict := map[string]string{"foo"="var"}
+	defer delete(dict)
+
+	tmp := template(fmt, dict)
+	defer delete(tmp)
+	testing.expect(t, tmp=="var", tmp)
+}
+@(test)
+test7 :: proc(t: ^testing.T){
+	fmt := "{{{}}"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp=="", tmp)
+}
+@(test)
+test8 :: proc(t: ^testing.T){
+	fmt := "{{}}}"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp=="}", tmp)
+}
+@(test)
+test9 :: proc(t: ^testing.T){
+	fmt := "{{{}}}"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp=="}", tmp)
+}
+@(test)
+test10 :: proc(t: ^testing.T){
+	fmt := "{{} }}"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp=="", tmp)
+}
+@(test)
+test11 :: proc(t: ^testing.T){
+	fmt := "{{{} }}"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp=="", tmp)
+}
+@(test)
+test12 :: proc(t: ^testing.T){
+	fmt := " {{{} }}"
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp==" ", tmp)
+}
+@(test)
+test13 :: proc(t: ^testing.T){
+	fmt := "{{{} }} "
+	tmp := template(fmt,{})
+	defer delete(tmp)
+	testing.expect(t, tmp==" ", tmp)
+}