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package kingpin
import (
"os"
"testing"
"github.com/stretchr/testify/assert"
)
func TestResolverSimple(t *testing.T) {
app := newTestApp()
app.Resolver(MapResolver(map[string][]string{"hello": []string{"world"}}))
f := app.Flag("hello", "help").String()
_, err := app.Parse([]string{})
assert.NoError(t, err)
assert.Equal(t, "world", *f)
}
func TestResolverSatisfiesRequired(t *testing.T) {
app := newTestApp()
app.Resolver(MapResolver(map[string][]string{"hello": []string{"world"}}))
f := app.Flag("hello", "help").Required().String()
_, err := app.Parse([]string{})
assert.NoError(t, err)
assert.Equal(t, "world", *f)
}
func TestResolverLowerPriorityThanFlag(t *testing.T) {
app := newTestApp()
app.Resolver(MapResolver(map[string][]string{"hello": []string{"world"}}))
f := app.Flag("hello", "help").String()
_, err := app.Parse([]string{"--hello", "there"})
assert.NoError(t, err)
assert.Equal(t, "there", *f)
}
func TestResolverFallbackWithMultipleResolvers(t *testing.T) {
app := newTestApp()
app.Resolver(MapResolver(map[string][]string{"hello": []string{"there"}, "foo": []string{"bar"}}))
app.Resolver(MapResolver(map[string][]string{"hello": []string{"world"}}))
f1 := app.Flag("hello", "help").String()
f2 := app.Flag("foo", "help").String()
_, err := app.Parse([]string{})
assert.NoError(t, err)
assert.Equal(t, "world", *f1)
assert.Equal(t, "bar", *f2)
}
func TestResolverLowerPriorityThanEnvar(t *testing.T) {
os.Setenv("TEST_RESOLVER", "foo")
app := newTestApp()
app.Resolver(MapResolver(map[string][]string{"hello": []string{"world"}}))
f := app.Flag("hello", "help").Envar("TEST_RESOLVER").String()
_, err := app.Parse([]string{})
assert.NoError(t, err)
assert.Equal(t, "foo", *f)
}
func TestJSONResolver(t *testing.T) {
r, err := JSONResolver([]byte(`{
"str": "string",
"num": 1234,
"bool": true,
"array": ["a", "b"]
}`))
assert.NoError(t, err)
values, err := r.Resolve("str", nil)
assert.NoError(t, err)
assert.Equal(t, []string{"string"}, values)
values, err = r.Resolve("num", nil)
assert.NoError(t, err)
assert.Equal(t, []string{"1234"}, values)
values, err = r.Resolve("bool", nil)
assert.NoError(t, err)
assert.Equal(t, []string{"true"}, values)
values, err = r.Resolve("array", nil)
assert.NoError(t, err)
assert.Equal(t, []string{"a", "b"}, values)
}
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