[API] Expose allowed Reactions (#11735)

* [API] Expose allowed Reactions

* dont be in soutch a rush

* add TEST

* use ElementsMatch

Co-authored-by: Lauris BH <lauris@nix.lv>

integrations/api_issue_reaction_test.go

@@ -11,11 +11,27 @@ import (
 	"time"
 
 	"code.gitea.io/gitea/models"
+	"code.gitea.io/gitea/modules/setting"
 	api "code.gitea.io/gitea/modules/structs"
 
 	"github.com/stretchr/testify/assert"
 )
 
+func TestAPIAllowedReactions(t *testing.T) {
+	defer prepareTestEnv(t)()
+
+	type allowed []string
+
+	a := new(allowed)
+
+	req := NewRequest(t, "GET", "/api/v1/settings/allowed_reactions")
+	resp := MakeRequest(t, req, http.StatusOK)
+
+	DecodeJSON(t, resp, &a)
+	assert.Len(t, *a, len(setting.UI.Reactions))
+	assert.ElementsMatch(t, setting.UI.Reactions, *a)
+}
+
 func TestAPIIssuesReactions(t *testing.T) {
 	defer prepareTestEnv(t)()