chore: move the go code into a subfolder

apps/api/internal/zerrors/precondition_failed_test.go

@@ -0,0 +1,33 @@
+package zerrors_test
+
+import (
+	"errors"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"github.com/zitadel/zitadel/internal/zerrors"
+)
+
+func TestPreconditionFailedError(t *testing.T) {
+	var err interface{} = new(zerrors.PreconditionFailedError)
+	_, ok := err.(zerrors.PreconditionFailed)
+	assert.True(t, ok)
+}
+
+func TestThrowPreconditionFailedf(t *testing.T) {
+	err := zerrors.ThrowPreconditionFailedf(nil, "id", "msg")
+	//nolint:errorlint
+	_, ok := err.(*zerrors.PreconditionFailedError)
+	assert.True(t, ok)
+}
+
+func TestIsPreconditionFailed(t *testing.T) {
+	err := zerrors.ThrowPreconditionFailed(nil, "id", "msg")
+	ok := zerrors.IsPreconditionFailed(err)
+	assert.True(t, ok)
+
+	err = errors.New("Precondition failed!")
+	ok = zerrors.IsPreconditionFailed(err)
+	assert.False(t, ok)
+}