Add RandomizeStruct test

boil/testing.go

@@ -8,7 +8,7 @@ import (
 	"sync/atomic"
 	"time"
 
-	null "gopkg.in/nullbio/null.v4"
+	"gopkg.in/nullbio/null.v4"
 
 	"github.com/pkg/errors"
 	"github.com/satori/go.uuid"
@@ -194,7 +194,7 @@ func (s *Seed) randomizeField(field reflect.Value, fieldType string, canBeNull b
 		}
 	} else {
 		if isNull {
-			value = getVariableNullValue(kind)
+			value = getVariableZeroValue(kind)
 		} else {
 			value = s.getVariableRandValue(kind, typ)
 		}
@@ -205,6 +205,7 @@ func (s *Seed) randomizeField(field reflect.Value, fieldType string, canBeNull b
 	}
 
 	field.Set(reflect.ValueOf(value))
+
 	return nil
 }
 
@@ -290,8 +291,8 @@ func (s *Seed) getStructRandValue(typ reflect.Type) interface{} {
 	return nil
 }
 
-// getVariableNullValue for the matching type.
+// getVariableZeroValue for the matching type.
-func getVariableNullValue(kind reflect.Kind) interface{} {
+func getVariableZeroValue(kind reflect.Kind) interface{} {
 	switch kind {
 	case reflect.Float32:
 		return float32(0)

boil/testing_test.go

@@ -1,6 +1,7 @@
 package boil
 
 import (
+	"reflect"
 	"testing"
 	"time"
 
@@ -10,7 +11,7 @@ import (
 func TestRandomizeStruct(t *testing.T) {
 	t.Parallel()
 
-	s := new(Seed)
+	s := NewSeed()
 
 	var testStruct = struct {
 		Int       int
@@ -79,3 +80,67 @@ func TestRandomizeStruct(t *testing.T) {
 		t.Errorf("the null values are not being randomized: %#v", testStruct)
 	}
 }
+
+func TestRandomizeField(t *testing.T) {
+	t.Parallel()
+
+	type RandomizeTest struct {
+		In   interface{}
+		Typs []string
+		Out  interface{}
+	}
+
+	s := NewSeed()
+	inputs := []RandomizeTest{
+		{In: &null.Bool{}, Out: null.Bool{}, Typs: []string{"boolean"}},
+		{In: &null.String{}, Out: null.String{}, Typs: []string{"character", "uuid", "interval"}},
+		{In: &null.Time{}, Out: null.Time{}, Typs: []string{"time"}},
+		{In: &null.Float32{}, Out: null.Float32{}, Typs: []string{"real"}},
+		{In: &null.Float64{}, Out: null.Float64{}, Typs: []string{"decimal"}},
+		{In: &null.Int{}, Out: null.Int{}, Typs: []string{"integer"}},
+		{In: &null.Int8{}, Out: null.Int8{}, Typs: []string{"integer"}},
+		{In: &null.Int16{}, Out: null.Int16{}, Typs: []string{"smallint"}},
+		{In: &null.Int32{}, Out: null.Int32{}, Typs: []string{"integer"}},
+		{In: &null.Int64{}, Out: null.Int64{}, Typs: []string{"bigint"}},
+		{In: &null.Uint{}, Out: null.Uint{}, Typs: []string{"integer"}},
+		{In: &null.Uint8{}, Out: null.Uint8{}, Typs: []string{"integer"}},
+		{In: &null.Uint16{}, Out: null.Uint16{}, Typs: []string{"integer"}},
+		{In: &null.Uint32{}, Out: null.Uint32{}, Typs: []string{"integer"}},
+		{In: &null.Uint64{}, Out: null.Uint64{}, Typs: []string{"integer"}},
+
+		{In: new(float32), Out: float32(0), Typs: []string{"real"}},
+		{In: new(float64), Out: float64(0), Typs: []string{"numeric"}},
+		{In: new(int), Out: int(0), Typs: []string{"integer"}},
+		{In: new(int8), Out: int8(0), Typs: []string{"integer"}},
+		{In: new(int16), Out: int16(0), Typs: []string{"smallserial"}},
+		{In: new(int32), Out: int32(0), Typs: []string{"integer"}},
+		{In: new(int64), Out: int64(0), Typs: []string{"bigserial"}},
+		{In: new(uint), Out: uint(0), Typs: []string{"integer"}},
+		{In: new(uint8), Out: uint8(0), Typs: []string{"integer"}},
+		{In: new(uint16), Out: uint16(0), Typs: []string{"integer"}},
+		{In: new(uint32), Out: uint32(0), Typs: []string{"integer"}},
+		{In: new(uint64), Out: uint64(0), Typs: []string{"integer"}},
+
+		{In: new(bool), Out: false},
+		{In: new(string), Out: ""},
+		{In: new([]byte), Out: new([]byte)},
+		{In: &time.Time{}, Out: &time.Time{}},
+	}
+
+	for i := 0; i < len(inputs); i++ {
+		for _, typ := range inputs[i].Typs {
+			val := reflect.Indirect(reflect.ValueOf(&inputs[i]))
+			field := val.FieldByName("In").Elem().Elem()
+
+			// Make sure we never get back values that would be considered null
+			// by the boil whitelist generator, or by the database driver
+			if err := s.randomizeField(field, typ, false); err != nil {
+				t.Errorf("%d) %s", i, err)
+			}
+
+			if inputs[i].In == inputs[i].Out {
+				t.Errorf("%d) Field should not be null, got: %v -- type: %s\n", i, inputs[i].In, typ)
+			}
+		}
+	}
+}