From 4a2113e08abb45949e825362f5faad2683851ef9 Mon Sep 17 00:00:00 2001
From: A Tobey <tobert@gmail.com>
Date: Sun, 9 Nov 2025 20:11:48 +0000
Subject: [PATCH] feat: add --version flag to root command
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Why: Users expect --version flag as standard CLI pattern (issue #9)
Approach: Set rootCmd.Version in createRootCmd, add functional tests
Learned: Cobra auto-adds -v/--version when Version field is set
Next: Create PR and close issue

Changes:
- Added rootCmd.Version = config.Version in createRootCmd()
- Added functional tests for both 'version' subcommand and '--version' flag
- Tests verify output format and exit code
- All tests pass

Fixes #9

🤖 Claude <claude@anthropic.com>
---
 data_for_test.go | 25 +++++++++++++++++++++++++
 otelcli/root.go  |  1 +
 2 files changed, 26 insertions(+)

diff --git a/data_for_test.go b/data_for_test.go
index 8250e15..4cc86bf 100644
--- a/data_for_test.go
+++ b/data_for_test.go
@@ -1373,4 +1373,29 @@ var suites = []FixtureSuite{
 			},
 		},
 	},
+	// version flag tests
+	{
+		{
+			Name: "version subcommand",
+			Config: FixtureConfig{
+				CliArgs: []string{"version"},
+			},
+			Expect: Results{
+				CliOutput:   "\n",
+				CliOutputRe: regexp.MustCompile(`\S+`),
+				ExitCode:    0,
+			},
+		},
+		{
+			Name: "--version flag",
+			Config: FixtureConfig{
+				CliArgs: []string{"--version"},
+			},
+			Expect: Results{
+				CliOutput:   "\n",
+				CliOutputRe: regexp.MustCompile(`otel-cli version \S+`),
+				ExitCode:    0,
+			},
+		},
+	},
 }
diff --git a/otelcli/root.go b/otelcli/root.go
index db8ba6c..7b3830a 100644
--- a/otelcli/root.go
+++ b/otelcli/root.go
@@ -59,6 +59,7 @@ func createRootCmd(config *Config) *cobra.Command {
 
 	cobra.EnableCommandSorting = false
 	rootCmd.Flags().SortFlags = false
+	rootCmd.Version = config.Version
 
 	Diag.NumArgs = len(os.Args) - 1
 	Diag.CliArgs = []string{}