Tweak offer_tests to bypass liquidity check

Modify tests to bypass liquidity check by giving the offer
a denomination in fiat. In turn, making amount() and
build_uchecked() pub(crate)s.

lightning/src/ln/offers_tests.rs

@@ -55,6 +55,7 @@ use crate::offers::invoice_error::InvoiceError;
 use crate::offers::invoice_request::{InvoiceRequest, InvoiceRequestFields};
 use crate::offers::parse::Bolt12SemanticError;
 use crate::onion_message::messenger::{Destination, PeeledOnion};
+use crate::offers::offer::Amount;
 use crate::onion_message::offers::OffersMessage;
 use crate::onion_message::packet::ParsedOnionMessageContents;
 use crate::routing::gossip::{NodeAlias, NodeId};
@@ -1607,9 +1608,9 @@ fn fails_creating_or_paying_for_offer_without_connected_peers() {
 	reconnect_nodes(args);
 
 	let offer = alice.node
-		.create_offer_builder(Some(absolute_expiry)).unwrap()
-		.amount_msats(10_000_000)
-		.build().unwrap();
+		.create_offer_builder(None).unwrap()
+		.amount(Amount::Currency {iso4217_code: *b"USD", amount: 6_000})
+		.build_unchecked();
 
 	let payment_id = PaymentId([1; 32]);
 
@@ -1771,8 +1772,9 @@ fn fails_creating_invoice_request_without_blinded_reply_path() {
 
 	let offer = alice.node
 		.create_offer_builder(None).unwrap()
-		.amount_msats(10_000_000)
-		.build().unwrap();
+		.amount(Amount::Currency {iso4217_code: *b"USD", amount: 6_000})
+		.build_unchecked();
+
 
 	let payment_id = PaymentId([1; 32]);
 

lightning/src/offers/offer.rs

@@ -310,7 +310,7 @@ macro_rules! offer_builder_methods { (
 	/// Sets the [`Offer::amount`].
 	///
 	/// Successive calls to this method will override the previous setting.
-	pub(super) fn amount($($self_mut)* $self: $self_type, amount: Amount) -> $return_type {
+	pub(crate) fn amount($($self_mut)* $self: $self_type, amount: Amount) -> $return_type {
 		$self.offer.amount = Some(amount);
 		$return_value
 	}
@@ -460,7 +460,7 @@ macro_rules! offer_builder_test_methods { (
 	}
 
 	#[cfg_attr(c_bindings, allow(dead_code))]
-	pub(super) fn build_unchecked($self: $self_type) -> Offer {
+	pub(crate) fn build_unchecked($self: $self_type) -> Offer {
 		$self.build_without_checks()
 	}
 } }