core: Remove use of uuid

Author: lutter

Cargo.lock

@@ -24,5 +24,4 @@ anyhow = "1.0"
 
 [dev-dependencies]
 tower-test = { git = "https://github.com/tower-rs/tower.git" }
-uuid = { version = "1.9.1", features = ["v4"] }
 wiremock = "0.6.1"

core/Cargo.toml

@@ -104,7 +104,6 @@ mod test {
     use graph::log::discard;
     use graph::tokio;
     use tower::ServiceExt;
-    use uuid::Uuid;
     use wiremock::matchers as m;
     use wiremock::Mock;
     use wiremock::MockServer;
@@ -114,7 +113,11 @@ mod test {
 
     #[tokio::test]
     async fn cat_file_in_folder() {
-        let random_bytes = Uuid::new_v4().as_bytes().to_vec();
+        let random_bytes = "One morning, when Gregor Samsa woke \
+          from troubled dreams, he found himself transformed in his bed \
+          into a horrible vermin"
+            .as_bytes()
+            .to_vec();
         let ipfs_file = ("dir/file.txt", random_bytes.clone());
 
         let add_resp = add_files_to_local_ipfs_node_for_testing([ipfs_file])