test(inspect): validate combined container and image inspect output

`nerdctl inspect <container> <image>` should return a single JSON array
containing both the container and image inspect results. This unit test
parses the output and compares it with the results of separate `inspect`
commands to ensure correctness.

Signed-off-by: Yuhang Wei <[email protected]>

Author: weiyuhang2011

cmd/nerdctl/inspect/inspect_test.go

@@ -17,11 +17,60 @@
 package inspect
 
 import (
+	"encoding/json"
 	"testing"
 
+	"gotest.tools/v3/assert"
+
+	"github.com/containerd/nerdctl/mod/tigron/test"
+
+	"github.com/containerd/nerdctl/v2/pkg/inspecttypes/dockercompat"
 	"github.com/containerd/nerdctl/v2/pkg/testutil"
+	"github.com/containerd/nerdctl/v2/pkg/testutil/nerdtest"
 )
 
 func TestMain(m *testing.M) {
 	testutil.M(m)
 }
+
+func TestInspectSimpleCase(t *testing.T) {
+	nerdtest.Setup()
+	testCase := &test.Case{
+		Description: "inspect container and image return one single json array",
+		Setup: func(data test.Data, helpers test.Helpers) {
+			identifier := data.Identifier()
+			helpers.Ensure("run", "-d", "--quiet", "--name", identifier, testutil.CommonImage, "sleep", nerdtest.Infinity)
+		},
+		Cleanup: func(data test.Data, helpers test.Helpers) {
+			identifier := data.Identifier()
+			helpers.Anyhow("rm", "-f", identifier)
+		},
+		Command: func(data test.Data, helpers test.Helpers) test.TestableCommand {
+			return helpers.Command("inspect", testutil.CommonImage, data.Identifier())
+		},
+		Expected: func(data test.Data, helpers test.Helpers) *test.Expected {
+			return &test.Expected{
+				Output: func(stdout string, info string, t *testing.T) {
+					var inspectResult []json.RawMessage
+					err := json.Unmarshal([]byte(stdout), &inspectResult)
+					assert.NilError(t, err, "Unable to unmarshal output\n"+info)
+					assert.Equal(t, len(inspectResult), 2, "Unexpectedly got multiple results\n"+info)
+
+					var dci dockercompat.Image
+					err = json.Unmarshal(inspectResult[0], &dci)
+					assert.NilError(t, err, "Unable to unmarshal output\n"+info)
+					inspecti := nerdtest.InspectImage(helpers, testutil.CommonImage)
+					assert.Equal(t, dci.ID, inspecti.ID, info)
+
+					var dcc dockercompat.Container
+					err = json.Unmarshal(inspectResult[1], &dcc)
+					assert.NilError(t, err, "Unable to unmarshal output\n"+info)
+					inspectc := nerdtest.InspectContainer(helpers, data.Identifier())
+					assert.Assert(t, dcc.ID == inspectc.ID, info)
+				},
+			}
+		},
+	}
+
+	testCase.Run(t)
+}