add emotelookup test

pkg/api/ivr/emotelookup_test.go

@@ -0,0 +1,41 @@
+package ivr
+
+import "testing"
+
+func TestEmoteLookup(t *testing.T) {
+	t.Run("returns the channel a twitch emote is from and its tier", func(t *testing.T) {
+		// Tier 1
+		request, _ := EmoteLookup("forsenE")
+		response := "forsenE is a Tier 1 emote to channel forsen."
+
+		got := request
+		want := response
+
+		if got != want {
+			t.Errorf("got %q, want %q", got, want)
+		}
+
+		// Tier 2
+		request, _ = EmoteLookup("nanZ")
+		response = "nanZ is a Tier 2 emote to channel nani."
+
+		got = request
+		want = response
+
+		if got != want {
+			t.Errorf("got %q, want %q", got, want)
+		}
+
+		// Tier 3
+		request, _ = EmoteLookup("pajaCORAL")
+		response = "pajaCORAL is a Tier 3 emote to channel pajlada."
+
+		got = request
+		want = response
+
+		if got != want {
+			t.Errorf("got %q, want %q", got, want)
+		}
+
+	})
+}