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validate_test.go
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validate_test.go
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package yaml_test
import (
"strings"
"testing"
"github.com/go-playground/validator/v10"
"github.com/goccy/go-yaml"
)
func TestStructValidator(t *testing.T) {
type Inner struct {
Required string `validate:"required"`
Lt10 int `validate:"lt=10"`
}
cases := []struct {
TestName string
YAMLContent string
ExpectedErr string
Instance interface{}
}{
{
TestName: "Test Simple Validation",
YAMLContent: `---
- name: john
age: 20
- name: tom
age: -1
- name: ken
age: 10`,
ExpectedErr: `[5:8] Key: 'Age' Error:Field validation for 'Age' failed on the 'gte' tag
2 | - name: john
3 | age: 20
4 | - name: tom
> 5 | age: -1
^
6 | - name: ken
7 | age: 10`,
Instance: &[]struct {
Name string `yaml:"name" validate:"required"`
Age int `yaml:"age" validate:"gte=0,lt=120"`
}{},
},
{
TestName: "Test Missing Required Field",
YAMLContent: `---
- name: john
age: 20
- age: 10`,
ExpectedErr: `[4:1] Key: 'Name' Error:Field validation for 'Name' failed on the 'required' tag
1 | ---
2 | - name: john
3 | age: 20
> 4 | - age: 10
^
`,
Instance: &[]struct {
Name string `yaml:"name" validate:"required"`
Age int `yaml:"age" validate:"gte=0,lt=120"`
}{},
},
{
TestName: "Test Nested Validation Missing Internal Required",
YAMLContent: `---
name: john
age: 10
addr:
number: seven`,
ExpectedErr: `[4:5] Key: 'State' Error:Field validation for 'State' failed on the 'required' tag
1 | ---
2 | name: john
3 | age: 10
> 4 | addr:
^
5 | number: seven`,
Instance: &struct {
Name string `yaml:"name" validate:"required"`
Age int `yaml:"age" validate:"gte=0,lt=120"`
Addr struct {
Number string `yaml:"number" validate:"required"`
State string `yaml:"state" validate:"required"`
} `yaml:"addr"`
}{},
},
{
TestName: "Test nested Validation with unknown field",
YAMLContent: `---
name: john
age: 20
addr:
number: seven
state: washington
error: error
`,
ExpectedErr: `[7:3] unknown field "error"
4 | addr:
5 | number: seven
6 | state: washington
> 7 | error: error
^
`,
Instance: &struct {
Name string `yaml:"name" validate:"required"`
Age int `yaml:"age" validate:"gte=0,lt=120"`
Addr *struct {
Number string `yaml:"number" validate:"required"`
State string `yaml:"state" validate:"required"`
} `yaml:"addr" validate:"required"`
}{},
},
{
TestName: "Test Validation with wrong field type",
YAMLContent: `---
name: myDocument
roles:
name: myRole
permissions:
- hello
- how
- are
- you
`,
ExpectedErr: `[4:7] mapping was used where sequence is expected
1 | ---
2 | name: myDocument
3 | roles:
> 4 | name: myRole
^
5 | permissions:
6 | - hello
7 | - how
8 | `,
Instance: &struct {
Name string `yaml:"name"`
Roles []struct {
Name string `yaml:"name"`
Permissions []string `yaml:"permissions"`
} `yaml:"roles"`
}{},
},
{
TestName: "Test inline validation missing required",
YAMLContent: `---
name: john
age: 20
`,
ExpectedErr: `Key: 'Inner.Required' Error:Field validation for 'Required' failed on the 'required' tag`,
Instance: &struct {
Name string `yaml:"name" validate:"required"`
Age int `yaml:"age" validate:"gte=0,lt=120"`
Inner `yaml:",inline"`
}{},
},
{
TestName: "Test inline validation field error",
YAMLContent: `---
name: john
age: 20
required: present
lt10: 20
`,
ExpectedErr: `[5:7] Key: 'Inner.Lt10' Error:Field validation for 'Lt10' failed on the 'lt' tag
2 | name: john
3 | age: 20
4 | required: present
> 5 | lt10: 20
^
`,
Instance: &struct {
Name string `yaml:"name" validate:"required"`
Age int `yaml:"age" validate:"gte=0,lt=120"`
Inner `yaml:",inline"`
}{},
},
}
for _, tc := range cases {
tc := tc // NOTE: https://github.com/golang/go/wiki/CommonMistakes#using-goroutines-on-loop-iterator-variables
t.Run(tc.TestName, func(t *testing.T) {
validate := validator.New()
dec := yaml.NewDecoder(
strings.NewReader(tc.YAMLContent),
yaml.Validator(validate),
yaml.Strict(),
)
err := dec.Decode(tc.Instance)
switch {
case tc.ExpectedErr != "" && err == nil:
t.Fatal("expected error")
case tc.ExpectedErr == "" && err != nil:
t.Fatalf("unexpected error: %v", err)
case tc.ExpectedErr != "" && tc.ExpectedErr != err.Error():
t.Fatalf("expected `%s` but actual `%s`", tc.ExpectedErr, err.Error())
}
})
}
}