forked from AlecAivazis/survey
/
write_test.go
814 lines (665 loc) · 19 KB
/
write_test.go
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package core
import (
"fmt"
"reflect"
"testing"
"time"
"github.com/stretchr/testify/assert"
)
func TestWrite_returnsErrorIfTargetNotPtr(t *testing.T) {
// try to copy a value to a non-pointer
err := WriteAnswer(true, "hello", true)
// make sure there was an error
if err == nil {
t.Error("Did not encounter error when writing to non-pointer.")
}
}
func TestWrite_canWriteToBool(t *testing.T) {
// a pointer to hold the boolean value
ptr := true
// try to copy a false value to the pointer
WriteAnswer(&ptr, "", false)
// if the value is true
if ptr {
// the test failed
t.Error("Could not write a false bool to a pointer")
}
}
func TestWrite_canWriteString(t *testing.T) {
// a pointer to hold the boolean value
ptr := ""
// try to copy a false value to the pointer
err := WriteAnswer(&ptr, "", "hello")
if err != nil {
t.Error(err)
}
// if the value is not what we wrote
if ptr != "hello" {
t.Error("Could not write a string value to a pointer")
}
}
func TestWrite_canWriteSlice(t *testing.T) {
// a pointer to hold the value
ptr := []string{}
// copy in a value
WriteAnswer(&ptr, "", []string{"hello", "world"})
// make sure there are two entries
assert.Equal(t, []string{"hello", "world"}, ptr)
}
func TestWrite_canWriteMapString(t *testing.T) {
// a map to hold the values
ptr := map[string]string{}
// copy in a value
WriteAnswer(&ptr, "test", OptionAnswer{Value: "hello", Index: 5})
// make sure only string value is written
assert.Equal(t, map[string]string{"test": "hello"}, ptr)
}
func TestWrite_canWriteMapInt(t *testing.T) {
// a map to hold the values
ptr := map[string]int{}
// copy in a value
WriteAnswer(&ptr, "test", OptionAnswer{Value: "hello", Index: 5})
// make sure only string value is written
assert.Equal(t, map[string]int{"test": 5}, ptr)
}
func TestWrite_recoversInvalidReflection(t *testing.T) {
// a variable to mutate
ptr := false
// write a boolean value to the string
err := WriteAnswer(&ptr, "", "hello")
// if there was no error
if err == nil {
// the test failed
t.Error("Did not encounter error when forced invalid write.")
}
}
func TestWriteAnswer_handlesNonStructValues(t *testing.T) {
// the value to write to
ptr := ""
// write a value to the pointer
WriteAnswer(&ptr, "", "world")
// if we didn't change the value appropriate
if ptr != "world" {
// the test failed
t.Error("Did not write value to primitive pointer")
}
}
func TestWriteAnswer_canMutateStruct(t *testing.T) {
// the struct to hold the answer
ptr := struct{ Name string }{}
// write a value to an existing field
err := WriteAnswer(&ptr, "name", "world")
if err != nil {
// the test failed
t.Errorf("Encountered error while writing answer: %v", err.Error())
// we're done here
return
}
// make sure we changed the field
if ptr.Name != "world" {
// the test failed
t.Error("Did not mutate struct field when writing answer.")
}
}
func TestWriteAnswer_optionAnswer(t *testing.T) {
t.Run("writes index for ints", func(t *testing.T) {
val := 0
// write a value to an existing field
err := WriteAnswer(&val, "", OptionAnswer{
Index: 10,
Value: "string value",
})
if err != nil {
t.Errorf("Encountered error while writing answer: %v", err.Error())
return
}
if val != 10 {
t.Errorf("Wrong value written. Wanted 10, got %v", val)
return
}
})
t.Run("writes OptionAnswer for OptionAnswer", func(t *testing.T) {
val := OptionAnswer{}
// write a value to an existing field
err := WriteAnswer(&val, "", OptionAnswer{
Index: 10,
Value: "string value",
})
if err != nil {
t.Errorf("Encountered error while writing answer: %v", err.Error())
return
}
if val.Index != 10 || val.Value != "string value" {
t.Errorf("Wrong internal values: %v", val)
return
}
})
t.Run("writes value for strings", func(t *testing.T) {
val := ""
// write a value to an existing field
err := WriteAnswer(&val, "", OptionAnswer{
Index: 10,
Value: "string value",
})
if err != nil {
t.Errorf("Encountered error while writing answer: %v", err.Error())
return
}
if val != "string value" {
t.Errorf("Wrong value written. Wanted \"100\", got %v", val)
return
}
})
t.Run("writes slice of indices for slice of ints", func(t *testing.T) {
val := []int{}
// write a value to an existing field
err := WriteAnswer(&val, "", []OptionAnswer{
{
Index: 10,
Value: "string value",
},
})
if err != nil {
t.Errorf("Encountered error while writing answer: %v", err.Error())
return
}
if len(val) != 1 || val[0] != 10 {
t.Errorf("Wrong value written. Wanted [10], got %v", val)
return
}
})
t.Run("writes slice of values for slice of strings", func(t *testing.T) {
val := []string{}
// write a value to an existing field
err := WriteAnswer(&val, "", []OptionAnswer{
{
Index: 10,
Value: "string value",
},
})
if err != nil {
t.Errorf("Encountered error while writing answer: %v", err.Error())
return
}
if len(val) != 1 || val[0] != "string value" {
t.Errorf("Wrong value written. Wanted [string value], got %v", val)
return
}
})
}
func TestWriteAnswer_canMutateMap(t *testing.T) {
// the map to hold the answer
ptr := make(map[string]interface{})
// write a value to an existing field
err := WriteAnswer(&ptr, "name", "world")
if err != nil {
// the test failed
t.Errorf("Encountered error while writing answer: %v", err.Error())
// we're done here
return
}
// make sure we changed the field
if ptr["name"] != "world" {
// the test failed
t.Error("Did not mutate map when writing answer.")
}
}
func TestWrite_returnsErrorIfInvalidMapType(t *testing.T) {
// try to copy a value to a non map[string]interface{}
ptr := make(map[int]string)
err := WriteAnswer(&ptr, "name", "world")
// make sure there was an error
if err == nil {
t.Error("Did not encounter error when writing to invalid map.")
}
}
func TestWrite_writesStringSliceToIntSlice(t *testing.T) {
// make a slice of int to write to
target := []int{}
// write the answer
err := WriteAnswer(&target, "name", []string{"1", "2", "3"})
// make sure there was no error
assert.Nil(t, err, "WriteSlice to Int Slice")
// and we got what we wanted
assert.Equal(t, []int{1, 2, 3}, target)
}
func TestWrite_writesStringArrayToIntArray(t *testing.T) {
// make an array of int to write to
target := [3]int{}
// write the answer
err := WriteAnswer(&target, "name", [3]string{"1", "2", "3"})
// make sure there was no error
assert.Nil(t, err, "WriteArray to Int Array")
// and we got what we wanted
assert.Equal(t, [3]int{1, 2, 3}, target)
}
func TestWriteAnswer_returnsErrWhenFieldNotFound(t *testing.T) {
// the struct to hold the answer
ptr := struct{ Name string }{}
// write a value to an existing field
err := WriteAnswer(&ptr, "", "world")
if err == nil {
// the test failed
t.Error("Did not encountered error while writing answer to non-existing field.")
}
}
func TestFindField_canFindExportedField(t *testing.T) {
// create a reflective wrapper over the struct to look through
val := reflect.ValueOf(struct{ Name string }{Name: "Jack"})
// find the field matching "name"
field, fieldType, err := findField(val, "name")
// if something went wrong
if err != nil {
// the test failed
t.Error(err.Error())
return
}
// make sure we got the right value
if field.Interface() != "Jack" {
// the test failed
t.Errorf("Did not find the correct field value. Expected 'Jack' found %v.", field.Interface())
}
// make sure we got the right field type
if fieldType.Name != "Name" {
// the test failed
t.Errorf("Did not find the correct field name. Expected 'Name' found %v.", fieldType.Name)
}
}
func TestFindField_canFindTaggedField(t *testing.T) {
// the struct to look through
val := reflect.ValueOf(struct {
Username string `survey:"name"`
}{
Username: "Jack",
})
// find the field matching "name"
field, fieldType, err := findField(val, "name")
// if something went wrong
if err != nil {
// the test failed
t.Error(err.Error())
return
}
// make sure we got the right value
if field.Interface() != "Jack" {
// the test failed
t.Errorf("Did not find the correct field value. Expected 'Jack' found %v.", field.Interface())
}
// make sure we got the right fieldType
if fieldType.Name != "Username" {
// the test failed
t.Errorf("Did not find the correct field name. Expected 'Username' found %v.", fieldType.Name)
}
}
func TestFindField_canHandleCapitalAnswerNames(t *testing.T) {
// create a reflective wrapper over the struct to look through
val := reflect.ValueOf(struct{ Name string }{Name: "Jack"})
// find the field matching "name"
field, fieldType, err := findField(val, "Name")
// if something went wrong
if err != nil {
// the test failed
t.Error(err.Error())
return
}
// make sure we got the right value
if field.Interface() != "Jack" {
// the test failed
t.Errorf("Did not find the correct field value. Expected 'Jack' found %v.", field.Interface())
}
// make sure we got the right fieldType
if fieldType.Name != "Name" {
// the test failed
t.Errorf("Did not find the correct field name. Expected 'Name' found %v.", fieldType.Name)
}
}
func TestFindField_tagOverwriteFieldName(t *testing.T) {
// the struct to look through
val := reflect.ValueOf(struct {
Name string
Username string `survey:"name"`
}{
Name: "Ralf",
Username: "Jack",
})
// find the field matching "name"
field, fieldType, err := findField(val, "name")
// if something went wrong
if err != nil {
// the test failed
t.Error(err.Error())
return
}
// make sure we got the right value
if field.Interface() != "Jack" {
// the test failed
t.Errorf("Did not find the correct field value. Expected 'Jack' found %v.", field.Interface())
}
// make sure we got the right fieldType
if fieldType.Name != "Username" {
// the test failed
t.Errorf("Did not find the correct field name. Expected 'Username' found %v.", fieldType.Name)
}
}
func TestFindField_supportsPromotedFields(t *testing.T) {
// create a reflective wrapper over the struct to look through
type Common struct {
Name string
}
type Strct struct {
Common // Name field added by composition
Username string
}
val := reflect.ValueOf(Strct{Common: Common{Name: "Jack"}})
// find the field matching "name"
field, fieldType, err := findField(val, "Name")
// if something went wrong
if err != nil {
// the test failed
t.Error(err.Error())
return
}
// make sure we got the right value
if field.Interface() != "Jack" {
// the test failed
t.Errorf("Did not find the correct field value. Expected 'Jack' found %v.", field.Interface())
}
// make sure we got the right fieldType
if fieldType.Name != "Name" {
// the test failed
t.Errorf("Did not find the correct field name. Expected 'Name' found %v.", fieldType.Name)
}
}
func TestFindField_promotedFieldsWithTag(t *testing.T) {
// create a reflective wrapper over the struct to look through
type Common struct {
Username string `survey:"name"`
}
type Strct struct {
Common // Name field added by composition
Name string
}
val := reflect.ValueOf(Strct{
Common: Common{Username: "Jack"},
Name: "Ralf",
})
// find the field matching "name"
field, fieldType, err := findField(val, "name")
// if something went wrong
if err != nil {
// the test failed
t.Error(err.Error())
return
}
// make sure we got the right value
if field.Interface() != "Jack" {
// the test failed
t.Errorf("Did not find the correct field value. Expected 'Jack' found %v.", field.Interface())
}
// make sure we got the right fieldType
if fieldType.Name != "Username" {
// the test failed
t.Errorf("Did not find the correct field name. Expected 'Username' found %v.", fieldType.Name)
}
}
func TestFindField_promotedFieldsDontHavePriorityOverTags(t *testing.T) {
// create a reflective wrapper over the struct to look through
type Common struct {
Name string
}
type Strct struct {
Common // Name field added by composition
Username string `survey:"name"`
}
val := reflect.ValueOf(Strct{
Common: Common{Name: "Ralf"},
Username: "Jack",
})
// find the field matching "name"
field, fieldType, err := findField(val, "name")
// if something went wrong
if err != nil {
// the test failed
t.Error(err.Error())
return
}
// make sure we got the right value
if field.Interface() != "Jack" {
// the test failed
t.Errorf("Did not find the correct field value. Expected 'Jack' found %v.", field.Interface())
}
// make sure we got the right fieldType
if fieldType.Name != "Username" {
// the test failed
t.Errorf("Did not find the correct field name. Expected 'Username' found %v.", fieldType.Name)
}
}
type testFieldSettable struct {
Values map[string]string
}
type testStringSettable struct {
Value string `survey:"string"`
}
type testTaggedStruct struct {
TaggedValue testStringSettable `survey:"tagged"`
}
type testPtrTaggedStruct struct {
TaggedValue *testStringSettable `survey:"tagged"`
}
func (t *testFieldSettable) WriteAnswer(name string, value interface{}) error {
if t.Values == nil {
t.Values = map[string]string{}
}
if v, ok := value.(string); ok {
t.Values[name] = v
return nil
}
return fmt.Errorf("Incompatible type %T", value)
}
func (t *testStringSettable) WriteAnswer(_ string, value interface{}) error {
t.Value = value.(string)
return nil
}
func TestWriteWithFieldSettable(t *testing.T) {
testSet1 := testFieldSettable{}
err := WriteAnswer(&testSet1, "values", "stringVal")
assert.Nil(t, err)
assert.Equal(t, map[string]string{"values": "stringVal"}, testSet1.Values)
testSet2 := testFieldSettable{}
err = WriteAnswer(&testSet2, "values", 123)
assert.Error(t, fmt.Errorf("Incompatible type int64"), err)
assert.Equal(t, map[string]string{}, testSet2.Values)
testString1 := testStringSettable{}
err = WriteAnswer(&testString1, "", "value1")
assert.Nil(t, err)
assert.Equal(t, testStringSettable{"value1"}, testString1)
testSetStruct := testTaggedStruct{}
err = WriteAnswer(&testSetStruct, "tagged", "stringVal1")
assert.Nil(t, err)
assert.Equal(t, testTaggedStruct{TaggedValue: testStringSettable{"stringVal1"}}, testSetStruct)
testPtrSetStruct := testPtrTaggedStruct{&testStringSettable{}}
err = WriteAnswer(&testPtrSetStruct, "tagged", "stringVal1")
assert.Nil(t, err)
assert.Equal(t, testPtrTaggedStruct{TaggedValue: &testStringSettable{"stringVal1"}}, testPtrSetStruct)
}
// CONVERSION TESTS
func TestWrite_canStringToBool(t *testing.T) {
// a pointer to hold the boolean value
ptr := true
// try to copy a false value to the pointer
WriteAnswer(&ptr, "", "false")
// if the value is true
if ptr {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToInt(t *testing.T) {
// a pointer to hold the value
var ptr int = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToInt8(t *testing.T) {
// a pointer to hold the value
var ptr int8 = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToInt16(t *testing.T) {
// a pointer to hold the value
var ptr int16 = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToInt32(t *testing.T) {
// a pointer to hold the value
var ptr int32 = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToInt64(t *testing.T) {
// a pointer to hold the value
var ptr int64 = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToUint(t *testing.T) {
// a pointer to hold the value
var ptr uint = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToUint8(t *testing.T) {
// a pointer to hold the value
var ptr uint8 = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToUint16(t *testing.T) {
// a pointer to hold the value
var ptr uint16 = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToUint32(t *testing.T) {
// a pointer to hold the value
var ptr uint32 = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToUint64(t *testing.T) {
// a pointer to hold the value
var ptr uint64 = 1
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2")
// if the value is true
if ptr != 2 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToFloat32(t *testing.T) {
// a pointer to hold the value
var ptr float32 = 1.0
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2.5")
// if the value is true
if ptr != 2.5 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canStringToFloat64(t *testing.T) {
// a pointer to hold the value
var ptr float64 = 1.0
// try to copy a value to the pointer
WriteAnswer(&ptr, "", "2.5")
// if the value is true
if ptr != 2.5 {
// the test failed
t.Error("Could not convert string to pointer type")
}
}
func TestWrite_canConvertStructFieldTypes(t *testing.T) {
// the struct to hold the answer
ptr := struct {
Name string
Age uint
Male bool
Height float64
Timeout time.Duration
}{}
// write the values as strings
check(t, WriteAnswer(&ptr, "name", "Bob"))
check(t, WriteAnswer(&ptr, "age", "22"))
check(t, WriteAnswer(&ptr, "male", "true"))
check(t, WriteAnswer(&ptr, "height", "6.2"))
check(t, WriteAnswer(&ptr, "timeout", "30s"))
// make sure we changed the fields
if ptr.Name != "Bob" {
t.Error("Did not mutate Name when writing answer.")
}
if ptr.Age != 22 {
t.Error("Did not mutate Age when writing answer.")
}
if !ptr.Male {
t.Error("Did not mutate Male when writing answer.")
}
if ptr.Height != 6.2 {
t.Error("Did not mutate Height when writing answer.")
}
if ptr.Timeout != time.Duration(30*time.Second) {
t.Error("Did not mutate Timeout when writing answer.")
}
}
func check(t *testing.T, err error) {
if err != nil {
t.Fatalf("Encountered error while writing answer: %v", err.Error())
}
}