integration-cli: migrate TestAPIStatsContainerNotFound to integration tests

Migrate TestAPIStatsContainerNotFound from the deprecated integration-cli
test suite to the modern integration test framework in integration/container.

The test verifies that the container stats API returns a NotFound error
for non-existent containers, testing both streaming and non-streaming modes.

Changes made:
- Migrated test to integration/container/stats_test.go using standard
  Go testing patterns
- Refactored to use test array pattern for better test organization
- Removed test from integration-cli/docker_api_stats_test.go
- Removed unused imports from integration-cli file
- Removed Windows skip as it may not be necessary

Signed-off-by: Salim Dohri <dohri.salim@gmail.com>

integration-cli/docker_api_stats_test.go

@@ -13,10 +13,8 @@ import (
 	"testing"
 	"time"
 
-	cerrdefs "github.com/containerd/errdefs"
 	"github.com/moby/moby/api/types/container"
 	"github.com/moby/moby/api/types/system"
-	"github.com/moby/moby/client"
 	"github.com/moby/moby/v2/integration-cli/cli"
 	"github.com/moby/moby/v2/internal/testutil"
 	"github.com/moby/moby/v2/internal/testutil/request"
@@ -178,26 +176,6 @@ func getNetworkStats(t *testing.T, id string) map[string]container.NetworkStats
 	return st.Networks
 }
 
-func (s *DockerAPISuite) TestAPIStatsContainerNotFound(c *testing.T) {
-	testRequires(c, DaemonIsLinux)
-	apiClient, err := client.New(client.FromEnv)
-	assert.NilError(c, err)
-	defer func() { _ = apiClient.Close() }()
-
-	_, err = apiClient.ContainerStats(testutil.GetContext(c), "no-such-container", client.ContainerStatsOptions{
-		Stream: true,
-	})
-	assert.ErrorType(c, err, cerrdefs.IsNotFound)
-	assert.ErrorContains(c, err, "no-such-container")
-
-	_, err = apiClient.ContainerStats(testutil.GetContext(c), "no-such-container", client.ContainerStatsOptions{
-		Stream:                false,
-		IncludePreviousSample: true,
-	})
-	assert.ErrorType(c, err, cerrdefs.IsNotFound)
-	assert.ErrorContains(c, err, "no-such-container")
-}
-
 func (s *DockerAPISuite) TestAPIStatsNoStreamConnectedContainers(c *testing.T) {
 	testRequires(c, DaemonIsLinux)
 

integration/container/stats_test.go

@@ -6,6 +6,7 @@ import (
 	"reflect"
 	"testing"
 
+	cerrdefs "github.com/containerd/errdefs"
 	containertypes "github.com/moby/moby/api/types/container"
 	"github.com/moby/moby/client"
 	"github.com/moby/moby/v2/integration/internal/container"
@@ -60,3 +61,35 @@ func TestStats(t *testing.T) {
 		assert.Assert(t, is.ErrorIs(err, io.EOF))
 	})
 }
+
+func TestStatsContainerNotFound(t *testing.T) {
+	ctx := setupTest(t)
+	apiClient := testEnv.APIClient()
+
+	tests := []struct {
+		name    string
+		options client.ContainerStatsOptions
+	}{
+		{
+			name: "with stream",
+			options: client.ContainerStatsOptions{
+				Stream: true,
+			},
+		},
+		{
+			name: "without stream",
+			options: client.ContainerStatsOptions{
+				Stream:                false,
+				IncludePreviousSample: true,
+			},
+		},
+	}
+
+	for _, tc := range tests {
+		t.Run(tc.name, func(t *testing.T) {
+			_, err := apiClient.ContainerStats(ctx, "no-such-container", tc.options)
+			assert.ErrorType(t, err, cerrdefs.IsNotFound)
+			assert.ErrorContains(t, err, "no-such-container")
+		})
+	}
+}