consolidate test init functions into zebra-test (#541)

* consolidate test init logic into one place

* rustfmt

Co-authored-by: Jane Lusby <jane@zfnd.org>

Cargo.lock

@@ -1955,9 +1955,8 @@ dependencies = [
  "tokio",
  "tower",
  "tracing",
- "tracing-error",
  "tracing-futures",
- "tracing-subscriber",
+ "zebra-test",
 ]
 
 [[package]]
@@ -2334,8 +2333,6 @@ dependencies = [
  "tokio",
  "tower",
  "tracing",
- "tracing-error",
- "tracing-subscriber",
  "zebra-chain",
  "zebra-state",
  "zebra-test",
@@ -2393,9 +2390,7 @@ dependencies = [
  "tokio",
  "tower",
  "tracing",
- "tracing-error",
  "tracing-futures",
- "tracing-subscriber",
  "zebra-chain",
  "zebra-test",
 ]
@@ -2410,6 +2405,9 @@ dependencies = [
  "lazy_static",
  "tokio",
  "tower",
+ "tracing",
+ "tracing-error",
+ "tracing-subscriber",
 ]
 
 [[package]]

tower-batch/Cargo.toml

@@ -18,7 +18,6 @@ futures = "0.3.5"
 ed25519-zebra = "0.4"
 rand = "0.7"
 tokio = { version = "0.2", features = ["full"]}
-tracing-error = "0.1.2"
-tracing-subscriber = "0.2.6"
 tracing = "0.1.15"
 color-eyre = "0.5"
+zebra-test = { path = "../zebra-test/" }

tower-batch/tests/ed25519.rs

@@ -2,7 +2,6 @@ use std::{
     future::Future,
     mem,
     pin::Pin,
-    sync::Once,
     task::{Context, Poll},
     time::Duration,
 };
@@ -86,27 +85,6 @@ impl Drop for Ed25519Verifier {
 
 // =============== testing code ========
 
-static LOGGER_INIT: Once = Once::new();
-
-fn install_tracing() {
-    use tracing_error::ErrorLayer;
-    use tracing_subscriber::prelude::*;
-    use tracing_subscriber::{fmt, EnvFilter};
-
-    LOGGER_INIT.call_once(|| {
-        let fmt_layer = fmt::layer().with_target(false);
-        let filter_layer = EnvFilter::try_from_default_env()
-            .or_else(|_| EnvFilter::try_new("info"))
-            .unwrap();
-
-        tracing_subscriber::registry()
-            .with(filter_layer)
-            .with(fmt_layer)
-            .with(ErrorLayer::default())
-            .init();
-    })
-}
-
 async fn sign_and_verify<V>(mut verifier: V, n: usize) -> Result<(), V::Error>
 where
     V: Service<Ed25519Item, Response = ()>,
@@ -133,7 +111,7 @@ where
 #[tokio::test]
 async fn batch_flushes_on_max_items() -> Result<()> {
     use tokio::time::timeout;
-    install_tracing();
+    zebra_test::init();
 
     // Use a very long max_latency and a short timeout to check that
     // flushing is happening based on hitting max_items.
@@ -144,7 +122,7 @@ async fn batch_flushes_on_max_items() -> Result<()> {
 #[tokio::test]
 async fn batch_flushes_on_max_latency() -> Result<()> {
     use tokio::time::timeout;
-    install_tracing();
+    zebra_test::init();
 
     // Use a very high max_items and a short timeout to check that
     // flushing is happening based on hitting max_latency.

zebra-consensus/Cargo.toml

@@ -19,6 +19,4 @@ zebra-test = { path = "../zebra-test/" }
 spandoc = "0.1"
 tokio = { version = "0.2.21", features = ["full"] }
 tracing = "0.1.15"
-tracing-error = "0.1.2"
-tracing-subscriber = "0.2.6"
 color-eyre = "0.5"

zebra-consensus/src/verify.rs

@@ -129,23 +129,6 @@ mod tests {
     use tower::{util::ServiceExt, Service};
     use zebra_chain::serialization::ZcashDeserialize;
 
-    fn install_tracing() {
-        use tracing_error::ErrorLayer;
-        use tracing_subscriber::prelude::*;
-        use tracing_subscriber::{fmt, EnvFilter};
-
-        let fmt_layer = fmt::layer().with_target(false);
-        let filter_layer = EnvFilter::try_from_default_env()
-            .or_else(|_| EnvFilter::try_new("info"))
-            .unwrap();
-
-        tracing_subscriber::registry()
-            .with(filter_layer)
-            .with(fmt_layer)
-            .with(ErrorLayer::default())
-            .init();
-    }
-
     #[tokio::test]
     #[spandoc::spandoc]
     async fn verify() -> Result<(), Report> {
@@ -218,7 +201,7 @@ mod tests {
     #[tokio::test]
     #[spandoc::spandoc]
     async fn verify_fail_add_block() -> Result<(), Report> {
-        install_tracing();
+        zebra_test::init();
 
         let block =
             Arc::<Block>::zcash_deserialize(&zebra_test::vectors::BLOCK_MAINNET_415000_BYTES[..])?;

zebra-state/Cargo.toml

@@ -18,12 +18,10 @@ serde = { version = "1", features = ["serde_derive"] }
 
 [dev-dependencies]
 tokio = { version = "0.2.21", features = ["full"] }
-zebra-test = { path = "../zebra-test" }
+zebra-test = { path = "../zebra-test/" }
 spandoc = "0.1"
 tracing = "0.1.15"
 tracing-futures = "0.2.4"
-tracing-error = "0.1.2"
-tracing-subscriber = "0.2.6"
 tempdir = "0.3.7"
 color-eyre = "0.5"
 once_cell = "1.4"

zebra-state/tests/basic.rs

@@ -1,37 +1,12 @@
 use color_eyre::eyre::Report;
-use color_eyre::eyre::{bail, ensure, eyre};
 use once_cell::sync::Lazy;
-use std::sync::{Arc, Once};
+use std::sync::Arc;
 use tempdir::TempDir;
-use tower::Service;
-use tracing_error::ErrorLayer;
-use tracing_subscriber::prelude::*;
-use tracing_subscriber::{fmt, EnvFilter};
-use zebra_chain::{
-    block::{Block, BlockHeaderHash},
-    serialization::ZcashDeserialize,
-};
+use zebra_chain::{block::Block, serialization::ZcashDeserialize};
 use zebra_test::transcript::Transcript;
 
 use zebra_state::*;
 
-static LOGGER_INIT: Once = Once::new();
-
-fn install_tracing() {
-    LOGGER_INIT.call_once(|| {
-        let fmt_layer = fmt::layer().with_target(false);
-        let filter_layer = EnvFilter::try_from_default_env()
-            .or_else(|_| EnvFilter::try_new("info"))
-            .unwrap();
-
-        tracing_subscriber::registry()
-            .with(filter_layer)
-            .with(fmt_layer)
-            .with(ErrorLayer::default())
-            .init();
-    })
-}
-
 static ADD_BLOCK_TRANSCRIPT: Lazy<Vec<(Request, Response)>> = Lazy::new(|| {
     let block: Arc<_> =
         Block::zcash_deserialize(&zebra_test::vectors::BLOCK_MAINNET_415000_BYTES[..])
@@ -75,7 +50,7 @@ static GET_TIP_TRANSCRIPT: Lazy<Vec<(Request, Response)>> = Lazy::new(|| {
 
 #[tokio::test]
 async fn check_transcripts() -> Result<(), Report> {
-    install_tracing();
+    zebra_test::init();
 
     for transcript_data in &[&ADD_BLOCK_TRANSCRIPT, &GET_TIP_TRANSCRIPT] {
         let service = in_memory::init();

zebra-test/Cargo.toml

@@ -13,6 +13,9 @@ lazy_static = "1.4.0"
 tower = "0.3.1"
 futures = "0.3.5"
 color-eyre = "0.5"
+tracing = "0.1.15"
+tracing-subscriber = "0.2.6"
+tracing-error = "0.1.2"
 
 [dev-dependencies]
-tokio = { version = "0.2", features = ["full"] }
+tokio = { version = "0.2", features = ["full"] }

zebra-test/src/lib.rs

@@ -1,4 +1,28 @@
 //! Miscellaneous test code for Zebra.
+use std::sync::Once;
+use tracing_error::ErrorLayer;
+use tracing_subscriber::{fmt, prelude::*, EnvFilter};
+
+static INIT: Once = Once::new();
+
+/// Initialize globals for tests such as the tracing subscriber and panic / error
+/// reporting hooks
+pub fn init() {
+    INIT.call_once(|| {
+        let fmt_layer = fmt::layer().with_target(false);
+        let filter_layer = EnvFilter::try_from_default_env()
+            .or_else(|_| EnvFilter::try_new("info"))
+            .unwrap();
+
+        tracing_subscriber::registry()
+            .with(filter_layer)
+            .with(fmt_layer)
+            .with(ErrorLayer::default())
+            .init();
+
+        color_eyre::install().unwrap();
+    })
+}
 
 pub mod transcript;
 pub mod vectors;

zebra-test/tests/transcript.rs

@@ -2,7 +2,7 @@ use tower::{Service, ServiceExt};
 
 use zebra_test::transcript::Transcript;
 
-const TRANSCRIPT_DATA: [(&'static str, &'static str); 4] = [
+const TRANSCRIPT_DATA: [(&str, &str); 4] = [
     ("req1", "rsp1"),
     ("req2", "rsp2"),
     ("req3", "rsp3"),