private/apigen: Add test for Types.All

Add a test for Types.All method because we may need to adjust the logic
in future commits and we want to detect what has changed for good or
bad.

Change-Id: I1db4bf67db3c87513cb9aeb7b942c6c132fc4dd1

private/apigen/tstypes_test.go

@@ -0,0 +1,88 @@
+// Copyright (C) 2023 Storj Labs, Inc.
+// See LICENSE for copying information.
+
+package apigen
+
+import (
+	"reflect"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func TestTypes(t *testing.T) {
+	t.Run("All returns nested types", func(t *testing.T) {
+		typesList := []reflect.Type{
+			reflect.TypeOf(true),
+			reflect.TypeOf(int64(10)),
+			reflect.TypeOf(uint8(9)),
+			reflect.TypeOf(float64(99.9)),
+			reflect.TypeOf("this is a test"),
+			reflect.TypeOf(struct {
+				Name      string
+				Addresses []struct {
+					Address string
+					PO      string
+				}
+				Job struct {
+					Company      string
+					Position     string
+					StartingYear uint
+				}
+			}{}),
+			reflect.TypeOf([]string{}),
+			reflect.TypeOf([]struct {
+				Path    string
+				content string
+			}{}),
+		}
+
+		types := NewTypes()
+		for _, li := range typesList {
+			types.Register(li)
+		}
+
+		allTypes := types.All()
+
+		require.Len(t, allTypes, 13, "total number of types")
+		require.Subset(t, allTypes, typesList, "all types contains at least the registered ones")
+	})
+
+	t.Run("anonymous structs", func(t *testing.T) {
+		typesList := []reflect.Type{
+			reflect.TypeOf(struct {
+				Name      string
+				Addresses []struct {
+					Address string
+					PO      string
+				}
+				Job struct {
+					Company      string
+					Position     string
+					StartingYear uint
+				}
+				Documents []struct {
+					Path    string
+					Content string
+				}
+			}{}),
+		}
+
+		types := NewTypes()
+		for _, li := range typesList {
+			types.Register(li)
+		}
+
+		allTypes := types.All()
+
+		require.Len(t, allTypes, 8, "total number of types")
+		require.Subset(t, allTypes, typesList, "all types contains at least the registered ones")
+
+		typesNames := []string{}
+		for _, tp := range allTypes {
+			typesNames = append(typesNames, tp.Name())
+		}
+
+		require.ElementsMatch(t, []string{"", "", "", "", "", "", "string", "uint"}, typesNames)
+	})
+}