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) } }