mediocre-go-lib/mcfg/mcfg_test.go

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package mcfg
import (
. "testing"
"github.com/mediocregopher/mediocre-go-lib/mcmp"
"github.com/stretchr/testify/assert"
)
func TestPopulate(t *T) {
{
cmp := new(mcmp.Component)
a := Int(cmp, "a")
cmpFoo := cmp.Child("foo")
b := Int(cmpFoo, "b")
c := Int(cmpFoo, "c")
d := Int(cmp, "d", ParamDefault(4))
err := Populate(cmp, &SourceCLI{
Args: []string{"--a=1", "--foo-b=2"},
})
assert.NoError(t, err)
assert.Equal(t, 1, *a)
assert.Equal(t, 2, *b)
assert.Equal(t, 0, *c)
assert.Equal(t, 4, *d)
}
{ // test that required params are enforced
cmp := new(mcmp.Component)
a := Int(cmp, "a")
cmpFoo := cmp.Child("foo")
b := Int(cmpFoo, "b")
c := Int(cmpFoo, "c", ParamRequired())
err := Populate(cmp, &SourceCLI{
Args: []string{"--a=1", "--foo-b=2"},
})
assert.Error(t, err)
err = Populate(cmp, &SourceCLI{
Args: []string{"--a=1", "--foo-b=2", "--foo-c=3"},
})
assert.NoError(t, err)
assert.Equal(t, 1, *a)
assert.Equal(t, 2, *b)
assert.Equal(t, 3, *c)
}
}