Consolidate test signer fixture code

src/tests/builder.rs

@@ -13,12 +13,12 @@
 
 use std::fs::OpenOptions;
 
-use c2pa::{create_signer, Manifest, ManifestStore, SigningAlg};
+use c2pa::{Manifest, ManifestStore};
 
 use crate::{
     builder::{IdentityAssertionBuilder, ManifestBuilder},
     internal::naive_credential_handler::NaiveCredentialHolder,
-    tests::fixtures::{fixture_path, temp_dir_path},
+    tests::fixtures::{fixture_path, temp_c2pa_signer, temp_dir_path},
     IdentityAssertion,
 };
 
@@ -27,19 +27,13 @@ async fn simple_case() {
     // TO DO: Clean up code and extract into builder interface.
     // For now, just looking for a simple proof-of-concept.
 
-    let signcert_path = fixture_path("certs/ps256.pub");
-    let pkey_path = fixture_path("certs/ps256.pem");
-
-    let signer =
-        create_signer::from_files(signcert_path, pkey_path, SigningAlg::Ps256, None).unwrap();
-
     let source = fixture_path("cloud.jpg");
 
+    let mut input_stream = OpenOptions::new().read(true).open(&source).unwrap();
+
     let temp_dir = tempfile::tempdir().unwrap();
     let dest = temp_dir_path(&temp_dir, "cloud_output.jpg");
 
-    let mut input_stream = OpenOptions::new().read(true).open(&source).unwrap();
-
     let mut output_stream = OpenOptions::new()
         .read(true)
         .write(true)
@@ -48,16 +42,16 @@ async fn simple_case() {
         .open(&dest)
         .unwrap();
 
-    let manifest: Manifest = Manifest::new("identity_test/simple_case");
-
     // TO DO: Add a metadata assertion as an example.
 
     let naive_credential = NaiveCredentialHolder {};
     let iab = IdentityAssertionBuilder::for_credential_holder(naive_credential);
 
+    let signer = temp_c2pa_signer();
     let mut mb = ManifestBuilder::default();
     mb.add_assertion(iab);
 
+    let manifest: Manifest = Manifest::new("identity_test/simple_case");
     mb.build(
         manifest,
         "jpg",

src/tests/fixtures/mod.rs

@@ -17,6 +17,7 @@
 
 use std::{env, path::PathBuf};
 
+use c2pa::{create_signer, Signer, SigningAlg};
 use tempfile::TempDir;
 
 pub(crate) fn fixture_path(name: &str) -> PathBuf {
@@ -36,3 +37,10 @@ pub(crate) fn temp_dir_path(temp_dir: &TempDir, file_name: &str) -> PathBuf {
     path.push(file_name);
     path
 }
+
+pub(crate) fn temp_c2pa_signer() -> Box<dyn Signer> {
+    let sign_cert = include_bytes!("../../tests/fixtures/certs/ps256.pub").to_vec();
+    let pem_key = include_bytes!("../../tests/fixtures/certs/ps256.pem").to_vec();
+
+    create_signer::from_keys(&sign_cert, &pem_key, SigningAlg::Ps256, None).unwrap()
+}