Report the embedded release version

internal/app/version_test.go

@@ -0,0 +1,38 @@
+package app
+
+import (
+	"bytes"
+	"io"
+	"strings"
+	"testing"
+
+	"gitea.maximumdirect.net/eric/narratio/internal/buildinfo"
+)
+
+func TestExecuteVersionReportsEmbeddedBuildVersion(t *testing.T) {
+	original := buildinfo.Version
+	buildinfo.Version = "v1.5.0-test"
+	t.Cleanup(func() { buildinfo.Version = original })
+
+	var stdout bytes.Buffer
+	var stderr bytes.Buffer
+	if code := Execute([]string{"version"}, &stdout, &stderr); code != 0 {
+		t.Fatalf("Execute() code = %d, stderr = %q", code, stderr.String())
+	}
+	if got, want := stdout.String(), "narratio v1.5.0-test\n"; got != want {
+		t.Fatalf("stdout = %q, want %q", got, want)
+	}
+	if stderr.Len() != 0 {
+		t.Fatalf("stderr = %q, want empty", stderr.String())
+	}
+}
+
+func TestExecuteVersionRejectsArguments(t *testing.T) {
+	var stderr bytes.Buffer
+	if code := Execute([]string{"version", "extra"}, io.Discard, &stderr); code == 0 {
+		t.Fatal("Execute() code = 0, want failure")
+	}
+	if !strings.Contains(stderr.String(), "version: unexpected arguments") {
+		t.Fatalf("stderr = %q, want argument error", stderr.String())
+	}
+}