test: Add unit test for Shellcheck function in main_test.go

shellcheck/main_test.go

@@ -0,0 +1,67 @@
+package main_test
+
+import (
+	"context"
+	"flag"
+	"os"
+	"testing"
+
+	"dagger.io/dagger"
+	"github.com/stretchr/testify/require"
+)
+
+var c *dagger.Client
+
+func TestMain(m *testing.M) {
+	flag.Parse()
+
+	ctx := context.Background()
+
+	c, _ = dagger.Connect(ctx, dagger.WithLogOutput(os.Stderr))
+	defer c.Close()
+
+	code := m.Run()
+	defer c.Close()
+	os.Exit(code)
+}
+
+func Test_Shellcheck(t *testing.T) {
+	t.Parallel()
+	ctx := context.Background()
+
+	t.Run("Test_mounted_host_directory_check", func(t *testing.T) {
+		t.Parallel()
+		container := base()
+		require.NotNil(t, container)
+
+		_, err := container.
+			WithMountedDirectory("/tmp", c.Host().Directory("./test/testdata")).
+			WithWorkdir("/tmp").
+			WithExec([]string{"sh", "-c", "find . -type f -name '*.sh' -print0 | xargs -0 shellcheck"}).
+			Stdout(ctx)
+		require.Error(t, err)
+		// require.Contains(t, err.Error(), "SC2283")
+		errorIDs := []string{"SC2283", "SC2154", "SC2086"}
+		for _, id := range errorIDs {
+			require.Contains(t, err.Error(), id)
+		}
+	})
+	t.Run("Test_shellcheck_version", func(t *testing.T) {
+		t.Parallel()
+		container := base()
+		require.NotNil(t, container)
+
+		out, err := container.
+			WithExec([]string{"shellcheck", "--version"}).
+			Stdout(ctx)
+		require.NoError(t, err)
+		require.Contains(t, out, "version")
+	})
+}
+
+func base() *dagger.Container {
+	return c.
+		Container().
+		From("koalaman/shellcheck-alpine:latest").
+		WithoutEntrypoint()
+}