chore(go): enforce package coverage gates

cmd/homesick/main.go

@@ -1,12 +1,17 @@
 package main
 
 import (
+	"io"
 	"os"
 
 	"git.hrafn.xyz/aether/gosick/internal/homesick/cli"
 )
 
 func main() {
-	exitCode := cli.Run(os.Args[1:], os.Stdout, os.Stderr)
+	exitCode := run(os.Args[1:], os.Stdout, os.Stderr)
 	os.Exit(exitCode)
 }
+
+func run(args []string, stdout io.Writer, stderr io.Writer) int {
+	return cli.Run(args, stdout, stderr)
+}

cmd/homesick/main_test.go

@@ -0,0 +1,53 @@
+package main
+
+import (
+	"bytes"
+	"os"
+	"os/exec"
+	"testing"
+
+	"git.hrafn.xyz/aether/gosick/internal/homesick/version"
+)
+
+func TestRunVersionCommand(t *testing.T) {
+	stdout := &bytes.Buffer{}
+	stderr := &bytes.Buffer{}
+
+	exitCode := run([]string{"version"}, stdout, stderr)
+	if exitCode != 0 {
+		t.Fatalf("run(version) exit code = %d, want 0", exitCode)
+	}
+	if got := stdout.String(); got != version.String+"\n" {
+		t.Fatalf("stdout = %q, want %q", got, version.String+"\n")
+	}
+	if got := stderr.String(); got != "" {
+		t.Fatalf("stderr = %q, want empty", got)
+	}
+
+}
+
+func TestMainVersionCommand(t *testing.T) {
+	if os.Getenv("GO_WANT_HELPER_PROCESS") == "1" {
+		os.Args = []string{"gosick", "version"}
+		main()
+		return
+	}
+
+	cmd := exec.Command(os.Args[0], "-test.run=TestMainVersionCommand")
+	cmd.Env = append(os.Environ(), "GO_WANT_HELPER_PROCESS=1")
+
+	stdout := &bytes.Buffer{}
+	stderr := &bytes.Buffer{}
+	cmd.Stdout = stdout
+	cmd.Stderr = stderr
+
+	if err := cmd.Run(); err != nil {
+		t.Fatalf("helper process failed: %v, stderr: %s", err, stderr.String())
+	}
+	if got := stdout.String(); got != version.String+"\n" {
+		t.Fatalf("stdout = %q, want %q", got, version.String+"\n")
+	}
+	if got := stderr.String(); got != "" {
+		t.Fatalf("stderr = %q, want empty", got)
+	}
+}