Make environment-dependent Go tests local-friendly

githooks/hooks/githooks_test.go

@@ -2,6 +2,7 @@ package hooks
 
 import (
 	"fmt"
+	"os"
 	"slices"
 	"testing"
 
@@ -11,7 +12,12 @@ import (
 
 func TestGithooksCompliesWithGit(t *testing.T) {
 	doc, err := htmlquery.LoadURL("https://git-scm.com/docs/githooks")
-	assert.NoError(t, err, "Could not load doc.")
+	if err != nil {
+		if os.Getenv("CI") != "" {
+			t.Fatalf("could not load Git hooks documentation in CI: %v", err)
+		}
+		t.Skipf("could not load Git hooks documentation: %v", err)
+	}
 
 	list := htmlquery.Find(doc, `//h2[@id="_hooks"]/following-sibling::div//h3`)
 	assert.NotEmpty(t, list)

githooks/hooks/images_test.go

@@ -3,6 +3,7 @@ package hooks
 import (
 	"io"
 	"os"
+	"os/exec"
 	"path"
 	"testing"
 
@@ -11,6 +12,25 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
+func requireDocker(t *testing.T) {
+	t.Helper()
+
+	if _, err := exec.LookPath("docker"); err != nil {
+		if os.Getenv("CI") != "" {
+			t.Fatalf("docker is required in CI: %v", err)
+		}
+		t.Skipf("docker is not available: %v", err)
+	}
+
+	output, err := exec.Command("docker", "info").CombinedOutput()
+	if err != nil {
+		if os.Getenv("CI") != "" {
+			t.Fatalf("docker daemon is required in CI: %v\n%s", err, output)
+		}
+		t.Skipf("docker daemon is not available: %v", err)
+	}
+}
+
 func TestLoadImagesConfig(t *testing.T) {
 	file, err := os.CreateTemp("", "image.yaml")
 	assert.NoError(t, err)
@@ -69,6 +89,8 @@ images:
 }
 
 func TestUpdateImages(t *testing.T) {
+	requireDocker(t)
+
 	repo, err := os.MkdirTemp("", "repo")
 	assert.NoError(t, err)
 	defer func() { _ = os.RemoveAll(repo) }()