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int_test.go
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160 lines (144 loc) · 3.78 KB
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package rig
import (
"errors"
"testing"
"github.com/Pimmr/rig/validators"
)
func TestIntValue(t *testing.T) {
for _, test := range []struct {
value int
expectedString string
input string
expectedSet int
expectedError bool
}{
{
value: 4,
expectedString: "4",
input: "2",
expectedSet: 2,
expectedError: false,
},
{
value: 1,
expectedString: "1",
input: "not-an-int",
expectedError: true,
},
} {
i := intValue(test.value)
if i.String() != test.expectedString {
t.Errorf("Int(&%d).String() = %q, expected %q", test.value, i, test.expectedString)
}
err := i.Set(test.input)
if test.expectedError && err == nil {
t.Errorf("Int().Set(%q): expected error, got nil instead", test.input)
continue
}
if !test.expectedError && err != nil {
t.Errorf("Int().Set(%q): unexpected error: %s", test.input, err)
continue
}
if int(i) != test.expectedSet {
t.Errorf("Int(&i).Set(%q): expected f to be %d, got %d instead", test.input, test.expectedSet, int(i))
}
}
}
func TestInt(t *testing.T) {
v := 2
flag := "flag"
env := "ENV"
usage := "usage"
f := Int(&v, flag, env, usage)
if f.TypeHint == "" {
t.Error("Int().TypeHint = \"\": expected .TypeHint to be set")
}
if f.Name != flag {
t.Errorf("Int(...).Name = %q, expected %q", f.Name, flag)
}
if f.Env != env {
t.Errorf("Int(...).Env = %q, expected %q", f.Env, env)
}
if f.Usage != usage {
t.Errorf("Int(...).Usage = %q, expected %q", f.Usage, usage)
}
expectedString := "2"
if f.String() != expectedString {
t.Errorf("Int(&2)).String() = %q, expected %q", f.String(), expectedString)
}
s := "1"
err := f.Set(s)
if err != nil {
t.Errorf("Int().Set(%q): unexpected error: %s", s, err)
}
if v != 1 {
t.Errorf("Int(&v).Set(%q): expected v to be %d, got %d instead", s, 1, v)
}
s = "notanint"
err = f.Set(s)
if err == nil {
t.Errorf("Int().Set(%q): expected error, got nil", s)
}
if f.IsBoolFlag() {
t.Error("Int().IsBoolFlag() = true, expected false")
}
}
func TestIntValidators(t *testing.T) {
testValidator := func(shouldFail bool) (validator validators.Int, called *bool) {
called = new(bool)
return func(int) error {
*called = true
if shouldFail {
return errors.New("failing validator")
}
return nil
}, called
}
t.Run("valid input passing validators", func(t *testing.T) {
var val int
v1, v1Called := testValidator(false)
v2, v2Called := testValidator(false)
f := Int(&val, "flag", "ENV", "testing int validators", v1, v2)
in := "1"
err := f.Set(in)
if err != nil {
t.Errorf("Int(..., v1, v2).Set(%q): unexpected error: %s", in, err)
}
if !*v1Called || !*v2Called {
t.Errorf("Int(..., v1, v2).Set(%q): some validator wasn't called (v1: %v, v2: %v)", in, *v1Called, *v2Called)
}
})
t.Run("invalid input passing validators", func(t *testing.T) {
var val int
v1, v1Called := testValidator(false)
f := Int(&val, "flag", "ENV", "testing int validators", v1)
in := ""
err := f.Set(in)
if err == nil {
t.Errorf("Int(..., v1).Set(%q): expected error, got nil", in)
}
if *v1Called {
t.Errorf("Int(..., v1).Set(%q): validator shouldn't have been called", in)
}
})
t.Run("valid input failing validators", func(t *testing.T) {
var val int
v1, v1Called := testValidator(true)
f := Int(&val, "flag", "ENV", "testing int validators", v1)
in := "2"
err := f.Set(in)
if err == nil {
t.Errorf("Int(..., failingV1).Set(%q): expected error, got nil", in)
}
if !*v1Called {
t.Errorf("Int(..., failingV1).Set(%q): validator should have been called", in)
}
})
}
func TestIntGenerator(t *testing.T) {
g := IntGenerator()
i := g()
if _, ok := i.(*intValue); !ok {
t.Errorf("IntGenerator(): expected type *intValue, got %T instead", i)
}
}