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regexp_test.go
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195 lines (173 loc) · 4.79 KB
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package rig
import (
"errors"
"fmt"
"regexp"
"testing"
"github.com/Pimmr/rig/validators"
)
func TestRegexpValue(t *testing.T) {
for _, test := range []struct {
value *regexp.Regexp
expectedString string
input string
expectedError bool
}{
{
value: regexp.MustCompile("[a-d][0-9]+"),
expectedString: "[a-d][0-9]+",
input: "[x-z][2-5]{2}",
expectedError: false,
},
{
value: regexp.MustCompile("[a-d][0-9]+"),
expectedString: "[a-d][0-9]+",
input: "[not-a-valid-regexp",
expectedError: true,
},
} {
v := test.value.Copy()
d := regexpValue{Regexp: &v}
if d.String() != test.expectedString {
t.Errorf("Regexp(&%s).String() = %q, expected %q", test.value, d, test.expectedString)
}
err := d.Set(test.input)
if test.expectedError && err == nil {
t.Errorf("Regexp().Set(%q): expected error, got nil instead", test.input)
continue
}
if !test.expectedError && err != nil {
t.Errorf("Regexp().Set(%q): unexpected error: %s", test.input, err)
continue
}
if err != nil {
continue
}
if (*d.Regexp).String() != test.input {
t.Errorf("Regexp(&d).Set(%q): expected f to be %s, got %v instead", test.input, test.input, d.Regexp)
}
}
}
func TestRegexp(t *testing.T) {
var v *regexp.Regexp
flag := "flag"
env := "ENV"
usage := "usage"
f := Regexp(&v, flag, env, usage)
if f.TypeHint == "" {
t.Error("Regexp().TypeHint = \"\": expected .TypeHint to be set")
}
if f.Name != flag {
t.Errorf("Regexp(...).Name = %q, expected %q", f.Name, flag)
}
if f.Env != env {
t.Errorf("Regexp(...).Env = %q, expected %q", f.Env, env)
}
if f.Usage != usage {
t.Errorf("Regexp(...).Usage = %q, expected %q", f.Usage, usage)
}
expectedString := ""
if f.String() != expectedString {
t.Errorf("Regexp(&2)).String() = %q, expected %q", f.String(), expectedString)
}
s := "[x-z][2-5]{2}"
err := f.Set(s)
if err != nil {
t.Errorf("Regexp().Set(%q): unexpected error: %s", s, err)
}
if v.String() != s {
t.Errorf("Regexp(&v).Set(%q): expected v to be %s, got %v instead", s, s, v)
}
s = "[notavalidregexp"
err = f.Set(s)
if err == nil {
t.Errorf("Regexp().Set(%q): expected error, got nil", s)
}
if f.IsBoolFlag() {
t.Error("Regexp().IsBoolFlag() = true, expected false")
}
}
func TestRegexpValidators(t *testing.T) {
testValidator := func(shouldFail bool) (validator validators.Regexp, called *bool) {
called = new(bool)
return func(*regexp.Regexp) 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 *regexp.Regexp
v1, v1Called := testValidator(false)
v2, v2Called := testValidator(false)
f := Regexp(&val, "flag", "ENV", "testing regexp validators", v1, v2)
in := "[x-z][2-5]{2}"
err := f.Set(in)
if err != nil {
t.Errorf("Regexp(..., v1, v2).Set(%q): unexpected error: %s", in, err)
}
if !*v1Called || !*v2Called {
t.Errorf("Regexp(..., 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 *regexp.Regexp
v1, v1Called := testValidator(false)
f := Regexp(&val, "flag", "ENV", "testing regexp validators", v1)
in := "[notavalidregexp"
err := f.Set(in)
if err == nil {
t.Errorf("Regexp(..., v1).Set(%q): expected error, got nil", in)
}
if *v1Called {
t.Errorf("Regexp(..., v1).Set(%q): validator shouldn't have been called", in)
}
})
t.Run("valid input failing validators", func(t *testing.T) {
var val *regexp.Regexp
v1, v1Called := testValidator(true)
f := Regexp(&val, "flag", "ENV", "testing regexp validators", v1)
in := "[a-d][0-9]+"
err := f.Set(in)
if err == nil {
t.Errorf("Regexp(..., failingV1).Set(%q): expected error, got nil", in)
}
if !*v1Called {
t.Errorf("Regexp(..., failingV1).Set(%q): validator should have been called", in)
}
})
}
func TestRegexpGenerator(t *testing.T) {
g := RegexpGenerator()
d := g()
r, ok := d.(*regexpValue)
if !ok {
t.Errorf("RegexpGenerator(): expected type *RegexpValue, got %T instead", d)
}
in := "[a-d]+"
err := d.Set(in)
if err != nil {
t.Errorf("RegexpGenerator()().Set(%q): unexpected error: %s", in, err)
t.FailNow()
}
if (*r.Regexp).String() != in {
t.Errorf("RegexpGenerator()().Set(%q) = %q, expected %q", in, (*r.Regexp).String(), in)
}
}
func ExampleRegexpGenerator() {
var rr []*regexp.Regexp
c := &Config{
FlagSet: testingFlagset(),
Flags: []*Flag{
Repeatable(&rr, RegexpGenerator(), "regexp", "REGEXP", "Repeatable regexp flag"),
},
}
err := c.Parse([]string{"-regexp=^foo.*", "-regexp=[0-9]bar{1,5}"})
if err != nil {
return
}
fmt.Printf("%v\n", rr)
// Output: [^foo.* [0-9]bar{1 5}]
}