chore: add delete_mute tests

assets/responses/delete-mute-no-params.html

@@ -0,0 +1,3 @@
+Deleted mute with the following params:
+<strong>Chain:</strong> all chains
+<strong>Proposal ID:</strong> all proposals

assets/responses/delete-mute-params.html

@@ -0,0 +1,3 @@
+Deleted mute with the following params:
+<strong>Chain:</strong> chain
+<strong>Proposal ID:</strong> proposal

pkg/database/stub.go

@@ -14,6 +14,7 @@ type StubDatabase struct {
 	UpsertVoteError       error
 	IsMutedError          error
 	UpsertMuteError       error
+	DeleteMuteError       error
 
 	Proposals       map[string]map[string]*types.Proposal
 	Votes           map[string]map[string]map[string]*types.Vote
@@ -187,6 +188,10 @@ func (d *StubDatabase) GetAllMutes() ([]*types.Mute, error) {
 }
 
 func (d *StubDatabase) DeleteMute(mute *types.Mute) (bool, error) {
+	if d.DeleteMuteError != nil {
+		return false, d.DeleteMuteError
+	}
+
 	if d.Mutes == nil {
 		return false, nil
 	}

pkg/reporters/telegram/delete_mute.go

@@ -1,6 +1,8 @@
 package telegram
 
 import (
+	"fmt"
+
 	tele "gopkg.in/telebot.v3"
 )
 
@@ -15,10 +17,10 @@ func (reporter *Reporter) HandleDeleteMute(c tele.Context) error {
 		return c.Reply("Error deleting mute: " + err)
 	}
 
-	if found, deleteErr := reporter.MutesManager.DeleteMute(mute); !found {
+	if found, deleteErr := reporter.MutesManager.DeleteMute(mute); deleteErr != nil {
+		return c.Reply(fmt.Sprintf("Error deleting mute: %s!", deleteErr))
+	} else if !found {
 		return c.Reply("Could not find the mute to delete!")
-	} else if deleteErr != nil {
-		return c.Reply("Error deleting mute!")
 	}
 
 	return reporter.ReplyRender(c, "mute_deleted", mute)