mediocre-go-lib/mcfg/mcfg_test.go

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package mcfg
import (
"context"
. "testing"
"github.com/mediocregopher/mediocre-go-lib/mctx"
"github.com/stretchr/testify/assert"
)
func TestPopulate(t *T) {
{
ctx := context.Background()
ctx, a := WithInt(ctx, "a", 0, "")
ctxChild := mctx.NewChild(ctx, "foo")
ctxChild, b := WithInt(ctxChild, "b", 0, "")
ctxChild, c := WithInt(ctxChild, "c", 0, "")
ctx = mctx.WithChild(ctx, ctxChild)
_, err := Populate(ctx, &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)
}
{ // test that required params are enforced
ctx := context.Background()
ctx, a := WithInt(ctx, "a", 0, "")
ctxChild := mctx.NewChild(ctx, "foo")
ctxChild, b := WithInt(ctxChild, "b", 0, "")
ctxChild, c := WithRequiredInt(ctxChild, "c", "")
ctx = mctx.WithChild(ctx, ctxChild)
_, err := Populate(ctx, &SourceCLI{
Args: []string{"--a=1", "--foo-b=2"},
})
assert.Error(t, err)
_, err = Populate(ctx, &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)
}
}