Add runtime version reporting

cmd/releasekit/main_test.go

@@ -0,0 +1,35 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"gitea.maximumdirect.net/eric/ReleaseKit/buildinfo"
+)
+
+func TestVersionCommand(t *testing.T) {
+	var stdout, stderr bytes.Buffer
+	if status := run([]string{"version"}, &stdout, &stderr); status != 0 {
+		t.Fatalf("run() status = %d, want 0; stderr = %q", status, stderr.String())
+	}
+	if want := fmt.Sprintf("releasekit %s\n", buildinfo.Version()); stdout.String() != want {
+		t.Fatalf("version output = %q, want %q", stdout.String(), want)
+	}
+	if stderr.Len() != 0 {
+		t.Fatalf("version command wrote to stderr: %q", stderr.String())
+	}
+}
+
+func TestUnknownCommand(t *testing.T) {
+	var stdout, stderr bytes.Buffer
+	if status := run([]string{"publish"}, &stdout, &stderr); status != 2 {
+		t.Fatalf("run() status = %d, want 2", status)
+	}
+	if stdout.Len() != 0 {
+		t.Fatalf("unknown command wrote to stdout: %q", stdout.String())
+	}
+	if want := "usage: releasekit version\n"; stderr.String() != want {
+		t.Fatalf("usage output = %q, want %q", stderr.String(), want)
+	}
+}