Add ReleaseKit version reporting

internal/cli/version_test.go

@@ -0,0 +1,72 @@
+package cli
+
+import (
+	"bytes"
+	"context"
+	"fmt"
+	"strings"
+	"testing"
+
+	"gitea.maximumdirect.net/eric/ReleaseKit/buildinfo"
+)
+
+func TestVersionCommandRunsWithoutApplicationSetup(t *testing.T) {
+	t.Chdir(t.TempDir())
+	var stdout, stderr bytes.Buffer
+	if code := Run(context.Background(), []string{"version"}, &stdout, &stderr); code != 0 {
+		t.Fatalf("exit=%d, stdout=%q, stderr=%q", code, stdout.String(), stderr.String())
+	}
+	if got, want := stdout.String(), fmt.Sprintf("audita %s\n", buildinfo.Version()); got != want {
+		t.Fatalf("stdout=%q, want %q", got, want)
+	}
+	if got := stderr.String(); got != "" {
+		t.Fatalf("stderr=%q, want empty", got)
+	}
+}
+
+func TestVersionCommandHelp(t *testing.T) {
+	for _, test := range []struct {
+		name string
+		args []string
+		want string
+	}{
+		{name: "root help", args: []string{"--help"}, want: "version    Print the Audita version"},
+		{name: "help version", args: []string{"help", "version"}, want: "audita version"},
+		{name: "short flag", args: []string{"version", "-h"}, want: "audita version"},
+		{name: "long flag", args: []string{"version", "--help"}, want: "audita version"},
+	} {
+		t.Run(test.name, func(t *testing.T) {
+			var stdout, stderr bytes.Buffer
+			if code := Run(context.Background(), test.args, &stdout, &stderr); code != 0 {
+				t.Fatalf("exit=%d, stdout=%q, stderr=%q", code, stdout.String(), stderr.String())
+			}
+			if !strings.Contains(stdout.String(), test.want) {
+				t.Fatalf("stdout=%q, want %q", stdout.String(), test.want)
+			}
+			if got := stderr.String(); got != "" {
+				t.Fatalf("stderr=%q, want empty", got)
+			}
+		})
+	}
+}
+
+func TestVersionCommandRejectsUnexpectedArguments(t *testing.T) {
+	for _, args := range [][]string{
+		{"version", "extra"},
+		{"version", "--unknown"},
+		{"version", "--help", "extra"},
+	} {
+		t.Run(strings.Join(args, " "), func(t *testing.T) {
+			var stdout, stderr bytes.Buffer
+			if code := Run(context.Background(), args, &stdout, &stderr); code != 2 {
+				t.Fatalf("exit=%d, stdout=%q, stderr=%q", code, stdout.String(), stderr.String())
+			}
+			if got := stdout.String(); got != "" {
+				t.Fatalf("stdout=%q, want empty", got)
+			}
+			if got := stderr.String(); got == "" {
+				t.Fatal("expected usage error on stderr")
+			}
+		})
+	}
+}