add soci convert feature tests

Signed-off-by: Arjun Raja Yogidas <arjunry@amazon.com>

Author: coderbirju

cmd/nerdctl/image/image_convert_linux_test.go

@@ -93,6 +93,7 @@ func TestImageConvert(t *testing.T) {
 				Require: require.All(
 					require.Not(nerdtest.Docker),
 					nerdtest.Soci,
+					nerdtest.SociVersion("0.10.0"),
 				),
 				Cleanup: func(data test.Data, helpers test.Helpers) {
 					helpers.Anyhow("rmi", "-f", data.Identifier("converted-image"))

pkg/testutil/nerdtest/requirements.go

@@ -419,6 +419,53 @@ var RemapIDs = &test.Requirement{
 	},
 }
 
+// SociVersion returns a requirement that checks if the installed SOCI version
+// meets the minimum required version
+func SociVersion(minVersion string) *test.Requirement {
+	return &test.Requirement{
+		Check: func(data test.Data, helpers test.Helpers) (bool, string) {
+			sociExecutable, err := exec.LookPath("soci")
+			if err != nil {
+				return false, fmt.Sprintf("soci executable not found in path $PATH: %v", err)
+			}
+
+			cmd := exec.Command(sociExecutable, "--version")
+			output, err := cmd.Output()
+			if err != nil {
+				return false, fmt.Sprintf("failed to get soci version: %v", err)
+			}
+
+			// Parse version from output
+			// Example output format: "soci version v0.9.0 737f61a3db40c386f997c1f126344158aa3ad43c"
+			versionStr := strings.TrimSpace(string(output))
+			parts := strings.Fields(versionStr)
+			if len(parts) < 3 {
+				return false, fmt.Sprintf("unexpected soci version output format: %s", versionStr)
+			}
+
+			// Extract version number without 'v' prefix
+			installedVersion := strings.TrimPrefix(parts[2], "v")
+
+			// Compare versions
+			v1, err := semver.NewVersion(installedVersion)
+			if err != nil {
+				return false, fmt.Sprintf("failed to parse installed version %s: %v", installedVersion, err)
+			}
+
+			v2, err := semver.NewVersion(minVersion)
+			if err != nil {
+				return false, fmt.Sprintf("failed to parse minimum required version %s: %v", minVersion, err)
+			}
+
+			if v1.LessThan(v2) {
+				return false, fmt.Sprintf("installed soci version %s is older than required version %s", installedVersion, minVersion)
+			}
+
+			return true, fmt.Sprintf("soci version %s meets minimum requirement %s", installedVersion, minVersion)
+		},
+	}
+}
+
 func ContainerdVersion(v string) *test.Requirement {
 	return &test.Requirement{
 		Check: func(data test.Data, helpers test.Helpers) (bool, string) {