add live progress display to complement wrapper

Added the `derive` feature to the workspace serde dependency here.
Previously, the dependency was only used in the main package, which
ended up enabling the `derive` feature through transitive serde
dependencies. This is not the case for xtask, so we need to enable it
explicitly.

Cargo.lock

@@ -453,6 +453,19 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d7b894f5411737b7867f4827955924d7c254fc9f4d91a6aad6b097804b1018b"
 
+[[package]]
+name = "console"
+version = "0.15.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0e1f83fc076bd6dd27517eacdf25fef6c4dfe5f1d7448bafaaf3a26f13b5e4eb"
+dependencies = [
+ "encode_unicode",
+ "lazy_static",
+ "libc",
+ "unicode-width",
+ "windows-sys 0.52.0",
+]
+
 [[package]]
 name = "const-oid"
 version = "0.9.6"
@@ -609,6 +622,12 @@ version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "60b1af1c220855b6ceac025d3f6ecdd2b7c4894bfe9cd9bda4fbb4bc7c0d4cf0"
 
+[[package]]
+name = "encode_unicode"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a357d28ed41a50f9c765dbfe56cbc04a64e53e5fc58ba79fbc34c10ef3df831f"
+
 [[package]]
 name = "enum-as-inner"
 version = "0.6.1"
@@ -1159,6 +1178,28 @@ dependencies = [
  "serde",
 ]
 
+[[package]]
+name = "indicatif"
+version = "0.17.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "763a5a8f45087d6bcea4222e7b72c291a054edf80e4ef6efd2a4979878c7bea3"
+dependencies = [
+ "console",
+ "instant",
+ "number_prefix",
+ "portable-atomic",
+ "unicode-width",
+]
+
+[[package]]
+name = "instant"
+version = "0.1.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e0242819d153cba4b4b05a5a8f2a7e9bbf97b6055b2a002b395c96b5ff3c0222"
+dependencies = [
+ "cfg-if",
+]
+
 [[package]]
 name = "ipconfig"
 version = "0.3.2"
@@ -1558,6 +1599,12 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "number_prefix"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "830b246a0e5f20af87141b25c173cd1b609bd7779a4617d6ec582abaf90870f3"
+
 [[package]]
 name = "object"
 version = "0.36.4"
@@ -1831,6 +1878,12 @@ dependencies = [
  "miniz_oxide 0.7.4",
 ]
 
+[[package]]
+name = "portable-atomic"
+version = "1.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7170ef9988bc169ba16dd36a7fa041e5c4cbeb6a35b76d4c03daded371eae7c0"
+
 [[package]]
 name = "powerfmt"
 version = "0.2.0"
@@ -3812,7 +3865,11 @@ name = "xtask"
 version = "0.1.0"
 dependencies = [
  "clap",
+ "indicatif",
  "miette",
+ "serde",
+ "serde_json",
+ "strum",
  "xshell",
 ]
 

Cargo.toml

@@ -97,6 +97,7 @@ http-body-util = "0.1.2"
 hyper = "1.4.1"
 hyper-util = { version = "0.1.8", features = ["client", "client-legacy", "service"] }
 image = { version = "0.25.2", default-features = false, features = ["jpeg", "png", "gif"] }
+indicatif = "0.17.8"
 jsonwebtoken = "9.3.0"
 lru-cache = "0.1.2"
 miette = { version = "7.2.0", features = ["fancy"] }
@@ -120,7 +121,7 @@ ruma = { git = "https://github.com/ruma/ruma", branch = "main", features = ["com
 rusqlite = { version = "0.32.1", features = ["bundled"] }
 rustls = { version = "0.23.13", default-features = false, features = ["ring", "log", "logging", "std", "tls12"] }
 sd-notify = { version = "0.4.2" }
-serde = { version = "1.0.210", features = ["rc"] }
+serde = { version = "1.0.210", features = ["rc", "derive"] }
 serde_html_form = "0.2.6"
 serde_json = { version = "1.0.128", features = ["raw_value"] }
 serde_yaml = "0.9.34"

xtask/Cargo.toml

@@ -8,6 +8,10 @@ rust-version.workspace = true
 [dependencies]
 clap.workspace = true
 miette.workspace = true
+indicatif.workspace = true
+serde.workspace = true
+serde_json.workspace = true
+strum.workspace = true
 xshell.workspace = true
 
 [lints]

xtask/src/complement.rs

@@ -6,7 +6,10 @@ use xshell::{cmd, Shell};
 mod docker;
 mod test2json;
 
-use self::{docker::load_docker_image, test2json::run_complement};
+use self::{
+    docker::load_docker_image,
+    test2json::{count_complement_tests, run_complement},
+};
 
 #[derive(clap::Args)]
 pub(crate) struct Args;
@@ -19,7 +22,9 @@ pub(crate) fn main(_args: Args) -> Result<()> {
     let docker_image = load_docker_image(&sh, &toplevel).wrap_err(
         "failed to build and load complement-grapevine docker image",
     )?;
-    run_complement(&sh, &docker_image)
+    let test_count = count_complement_tests(&sh, &docker_image)
+        .wrap_err("failed to determine total complement test count")?;
+    run_complement(&sh, &docker_image, test_count)
         .wrap_err("failed to run complement tests")?;
     Ok(())
 }

xtask/src/complement/test2json.rs

@@ -2,18 +2,220 @@
 //!
 //! [test2json]: https://pkg.go.dev/cmd/test2json@go1.22.4
 
-use miette::{IntoDiagnostic, Result};
+use std::{
+    io::{BufRead, BufReader},
+    process::{Command, Stdio},
+    time::Duration,
+};
+
+use indicatif::{ProgressBar, ProgressStyle};
+use miette::{miette, IntoDiagnostic, LabeledSpan, Result, WrapErr};
+use serde::Deserialize;
+use strum::Display;
 use xshell::{cmd, Shell};
 
+/// Returns the total number of complement tests that will be run
+///
+/// This is only able to count toplevel tests, and will not included subtests
+/// (`A/B`)
+pub(crate) fn count_complement_tests(
+    sh: &Shell,
+    docker_image: &str,
+) -> Result<u64> {
+    let test_list = cmd!(sh, "go tool test2json complement.test -test.list .*")
+        .env("COMPLEMENT_BASE_IMAGE", docker_image)
+        .read()
+        .into_diagnostic()?;
+    let test_count = u64::try_from(test_list.lines().count())
+        .into_diagnostic()
+        .wrap_err("test count overflowed u64")?;
+    Ok(test_count)
+}
+
 /// Runs complement test suite
-pub(crate) fn run_complement(sh: &Shell, docker_image: &str) -> Result<()> {
+pub(crate) fn run_complement(
+    sh: &Shell,
+    docker_image: &str,
+    test_count: u64,
+) -> Result<()> {
     // TODO: handle SIG{INT,TERM}
     // TODO: XTASK_PATH variable, so that we don't need to pollute devshell with
     // go
-    cmd!(sh, "go tool test2json complement.test -test.v=test2json")
+    let cmd = cmd!(sh, "go tool test2json complement.test -test.v=test2json")
         .env("COMPLEMENT_BASE_IMAGE", docker_image)
         .env("COMPLEMENT_SPAWN_HS_TIMEOUT", "5")
-        .env("COMPLEMENT_ALWAYS_PRINT_SERVER_LOGS", "1")
-        .run()
+        .env("COMPLEMENT_ALWAYS_PRINT_SERVER_LOGS", "1");
+    eprintln!("$ {cmd}");
+    let child = Command::from(cmd)
+        .stdout(Stdio::piped())
+        .spawn()
         .into_diagnostic()
+        .wrap_err("error spawning complement process")?;
+    let stdout = child
+        .stdout
+        .expect("child process spawned with piped stdout should have stdout");
+    let lines = BufReader::new(stdout).lines();
+
+    let mut ctx = TestContext::new(test_count);
+    for line in lines {
+        let line = line
+            .into_diagnostic()
+            .wrap_err("error reading output from complement process")?;
+        ctx.handle_line(&line);
+    }
+
+    Ok(())
+}
+
+/// Schema from <https://pkg.go.dev/cmd/test2json#hdr-Output_Format>
+///
+/// Only the fields that we need are included here.
+#[derive(Deserialize)]
+#[serde(
+    rename_all = "snake_case",
+    rename_all_fields = "PascalCase",
+    tag = "Action"
+)]
+enum GoTestEvent {
+    Run {
+        test: Option<String>,
+    },
+    Pass {
+        test: Option<String>,
+    },
+    Fail {
+        test: Option<String>,
+    },
+    Skip {
+        test: Option<String>,
+    },
+    #[serde(other)]
+    OtherAction,
+}
+
+#[derive(Copy, Clone, Display, Debug)]
+#[strum(serialize_all = "UPPERCASE")]
+enum TestResult {
+    Pass,
+    Fail,
+    Skip,
+}
+
+struct TestContext {
+    pb: ProgressBar,
+    pass_count: u64,
+    fail_count: u64,
+    skip_count: u64,
+}
+
+/// Returns a string to use for displaying a test name
+///
+/// From the test2json docs:
+///
+/// > The Test field, if present, specifies the test, example, or benchmark
+/// > function that caused the event. Events for the overall package test do not
+/// > set Test.
+///
+/// For events that do not have a `Test` field, we display their test name as
+/// `"GLOBAL"` instead.
+fn test_str(test: &Option<String>) -> &str {
+    if let Some(test) = test {
+        test
+    } else {
+        "GLOBAL"
+    }
+}
+
+/// Returns whether a test name is a toplevel test (as opposed to a subtest)
+fn test_is_toplevel(test: &str) -> bool {
+    !test.contains('/')
+}
+
+impl TestContext {
+    fn new(test_count: u64) -> TestContext {
+        // TODO: figure out how to display ETA without it fluctuating wildly.
+        let style = ProgressStyle::with_template(
+            "({msg})  {pos}/{len}  [{elapsed}] {wide_bar}",
+        )
+        .expect("static progress bar template should be valid")
+        .progress_chars("##-");
+        let pb = ProgressBar::new(test_count).with_style(style);
+        pb.enable_steady_tick(Duration::from_secs(1));
+        let ctx = TestContext {
+            pb,
+            pass_count: 0,
+            fail_count: 0,
+            skip_count: 0,
+        };
+        ctx.update_progress();
+        ctx
+    }
+
+    fn update_progress(&self) {
+        self.pb
+            .set_position(self.pass_count + self.fail_count + self.skip_count);
+        self.pb.set_message(format!(
+            "PASS {}, FAIL {}, SKIP {}",
+            self.pass_count, self.fail_count, self.skip_count
+        ));
+    }
+
+    fn handle_test_result(&mut self, test: &str, result: TestResult) {
+        self.pb.println(format!("=== {result}\t{test}"));
+        // 'complement.test -test.list' is only able to count toplevel tests
+        // ahead-of-time, so we don't include subtests in the pass/fail/skip
+        // counts.
+        if test_is_toplevel(test) {
+            match result {
+                TestResult::Pass => self.pass_count += 1,
+                TestResult::Fail => self.fail_count += 1,
+                TestResult::Skip => self.skip_count += 1,
+            }
+            self.update_progress();
+        }
+    }
+
+    fn handle_event(&mut self, event: GoTestEvent) {
+        match event {
+            GoTestEvent::OtherAction => (),
+            GoTestEvent::Run {
+                test,
+            } => {
+                self.pb.println(format!("=== RUN \t{}", test_str(&test)));
+            }
+            GoTestEvent::Pass {
+                test,
+            } => {
+                self.handle_test_result(test_str(&test), TestResult::Pass);
+            }
+            GoTestEvent::Fail {
+                test,
+            } => {
+                self.handle_test_result(test_str(&test), TestResult::Fail);
+            }
+            GoTestEvent::Skip {
+                test,
+            } => {
+                self.handle_test_result(test_str(&test), TestResult::Skip);
+            }
+        }
+    }
+
+    /// Processes a line of output from `test2json`
+    fn handle_line(&mut self, line: &str) {
+        match serde_json::from_str(line) {
+            Ok(event) => self.handle_event(event),
+            Err(e) => {
+                let label =
+                    LabeledSpan::at_offset(e.column() - 1, "error here");
+                let report = miette!(labels = vec![label], "{e}",)
+                    .with_source_code(line.to_owned())
+                    .wrap_err(
+                        "failed to parse go test2json event from complement \
+                         tests. Ignoring this event.",
+                    );
+                eprintln!("{report:?}");
+            }
+        };
+    }
 }