goctl model reactor (#15)

* reactor sql generation

* reactor sql generation

* add console & example

* optimize unit test & add document

* modify default config

* remove test file

* Revert "remove test file"

This reverts commit 81041f9e

* fix stringx.go & optimize example

* remove unused code

tools/goctl/model/sql/builderx/builder_test.go

@@ -0,0 +1,101 @@
+package builderx
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/go-xorm/builder"
+	"github.com/stretchr/testify/assert"
+)
+
+type (
+	User struct {
+		// 自增id
+		Id string `db:"id" json:"id,omitempty"`
+		// 姓名
+		UserName string `db:"user_name" json:"userName,omitempty"`
+		// 1男,2女
+		Sex int `db:"sex" json:"sex,omitempty"`
+
+		Uuid string `db:"uuid" uuid:"uuid,omitempty"`
+
+		Age int `db:"age" json:"age"`
+	}
+)
+
+var userFields = FieldNames(User{})
+
+func TestFieldNames(t *testing.T) {
+	var u User
+	out := FieldNames(&u)
+	fmt.Println(out)
+	actual := []string{"id", "user_name", "sex", "uuid", "age"}
+	assert.Equal(t, out, actual)
+}
+
+func TestNewEq(t *testing.T) {
+	u := &User{
+		Id:       "123456",
+		UserName: "wahaha",
+	}
+	out := NewEq(u)
+	fmt.Println(out)
+	actual := builder.Eq{"id": "123456", "user_name": "wahaha"}
+	assert.Equal(t, out, actual)
+}
+
+// @see https://github.com/go-xorm/builder
+func TestBuilderSql(t *testing.T) {
+	u := &User{
+		Id: "123123",
+	}
+	fields := FieldNames(u)
+	eq := NewEq(u)
+	sql, args, err := builder.Select(fields...).From("user").Where(eq).ToSQL()
+	fmt.Println(sql, args, err)
+
+	actualSql := "SELECT id,user_name,sex,uuid,age FROM user WHERE id=?"
+	actualArgs := []interface{}{"123123"}
+	assert.Equal(t, sql, actualSql)
+	assert.Equal(t, args, actualArgs)
+}
+
+func TestBuildSqlDefaultValue(t *testing.T) {
+	var eq = builder.Eq{}
+	eq["age"] = 0
+	eq["user_name"] = ""
+
+	sql, args, err := builder.Select(userFields...).From("user").Where(eq).ToSQL()
+	fmt.Println(sql, args, err)
+
+	actualSql := "SELECT id,user_name,sex,uuid,age FROM user WHERE age=? AND user_name=?"
+	actualArgs := []interface{}{0, ""}
+	assert.Equal(t, sql, actualSql)
+	assert.Equal(t, args, actualArgs)
+}
+
+func TestBuilderSqlIn(t *testing.T) {
+	u := &User{
+		Age: 18,
+	}
+	gtU := NewGt(u)
+	in := builder.In("id", []string{"1", "2", "3"})
+	sql, args, err := builder.Select(userFields...).From("user").Where(in).And(gtU).ToSQL()
+	fmt.Println(sql, args, err)
+
+	actualSql := "SELECT id,user_name,sex,uuid,age FROM user WHERE id IN (?,?,?) AND age>?"
+	actualArgs := []interface{}{"1", "2", "3", 18}
+	assert.Equal(t, sql, actualSql)
+	assert.Equal(t, args, actualArgs)
+}
+
+func TestBuildSqlLike(t *testing.T) {
+	like := builder.Like{"name", "wang"}
+	sql, args, err := builder.Select(userFields...).From("user").Where(like).ToSQL()
+	fmt.Println(sql, args, err)
+
+	actualSql := "SELECT id,user_name,sex,uuid,age FROM user WHERE name LIKE ?"
+	actualArgs := []interface{}{"%wang%"}
+	assert.Equal(t, sql, actualSql)
+	assert.Equal(t, args, actualArgs)
+}