update

cmd/languages_test.go

@@ -0,0 +1,63 @@
+package cmd
+
+import (
+	"bytes"
+	"encoding/json"
+	"strings"
+	"testing"
+)
+
+func TestLanguagesJSONFormat(t *testing.T) {
+	prev := languagesFormat
+	defer func() { languagesFormat = prev }()
+	languagesFormat = "json"
+
+	var buf bytes.Buffer
+	languagesCmd.SetOut(&buf)
+
+	if err := runLanguages(languagesCmd, nil); err != nil {
+		t.Fatalf("runLanguages returned error: %v", err)
+	}
+
+	var payload struct {
+		Count     int `json:"count"`
+		Languages []struct {
+			Canonical string   `json:"canonical"`
+			Aliases   []string `json:"aliases"`
+		} `json:"languages"`
+	}
+	if err := json.Unmarshal(buf.Bytes(), &payload); err != nil {
+		t.Fatalf("invalid json output: %v", err)
+	}
+	if payload.Count == 0 || len(payload.Languages) == 0 {
+		t.Fatalf("expected non-empty languages payload, got %+v", payload)
+	}
+
+	foundNext := false
+	for _, l := range payload.Languages {
+		if l.Canonical == "nextjs" {
+			foundNext = true
+			break
+		}
+	}
+	if !foundNext {
+		t.Fatalf("expected nextjs in JSON payload, got %+v", payload.Languages)
+	}
+}
+
+func TestLanguagesTextFormat(t *testing.T) {
+	prev := languagesFormat
+	defer func() { languagesFormat = prev }()
+	languagesFormat = "text"
+
+	var buf bytes.Buffer
+	languagesCmd.SetOut(&buf)
+
+	if err := runLanguages(languagesCmd, nil); err != nil {
+		t.Fatalf("runLanguages returned error: %v", err)
+	}
+	out := buf.String()
+	if !strings.Contains(out, "Devour Supported Languages") {
+		t.Fatalf("unexpected text output: %q", out)
+	}
+}