test(main): More tests in main command package

cmd/katenary/main_test.go

@@ -1,6 +1,13 @@
 package main
 
-import "testing"
+import (
+	"bytes"
+	"encoding/json"
+	"io"
+	"os"
+	"strings"
+	"testing"
+)
 
 func TestBuildCommand(t *testing.T) {
 	rootCmd := buildRootCmd()
@@ -15,3 +22,49 @@ func TestBuildCommand(t *testing.T) {
 		t.Errorf("Expected %d command, got %d", numCommands, len(rootCmd.Commands()))
 	}
 }
+
+func TestGetVersion(t *testing.T) {
+	cmd := buildRootCmd()
+	if cmd == nil {
+		t.Errorf("Expected cmd to be defined")
+	}
+	version := generateVersionCommand()
+	old := os.Stdout
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+
+	version.Run(cmd, nil)
+
+	w.Close()
+	os.Stdout = old
+
+	var buf bytes.Buffer
+	io.Copy(&buf, r)
+	output := buf.String()
+	if !strings.Contains(output, "(devel)") {
+		t.Errorf("Expected output to contain '(devel)', got %s", output)
+	}
+}
+
+func TestSchemaCommand(t *testing.T) {
+	cmd := buildRootCmd()
+	if cmd == nil {
+		t.Errorf("Expected cmd to be defined")
+	}
+	schema := generateSchemaCommand()
+	old := os.Stdout
+	r, w, _ := os.Pipe()
+	os.Stdout = w
+	schema.Run(cmd, nil)
+	w.Close()
+	os.Stdout = old
+	var buf bytes.Buffer
+	io.Copy(&buf, r)
+	output := buf.String()
+
+	// try to parse json
+	schemaContent := make(map[string]interface{})
+	if err := json.Unmarshal([]byte(output), &schemaContent); err != nil {
+		t.Errorf("Expected valid json, got %s", output)
+	}
+}