ci: integrate Codecov test analytics via cargo-nextest

.config/nextest.toml

@@ -0,0 +1,14 @@
+[test-groups]
+dashd-integration = { max-threads = 1 }
+
+[profile.ci]
+fail-fast = false
+
+[profile.ci.junit]
+path = "junit.xml"
+
+# dashd integration tests each start their own dashd process;
+# running them concurrently causes resource contention and crashes.
+[[profile.ci.overrides]]
+filter = 'binary(dashd_sync)'
+test-group = 'dashd-integration'

.github/scripts/ci_config.py

@@ -11,6 +11,7 @@
 import argparse
 import json
 import os
+import shutil
 import subprocess
 import sys
 from pathlib import Path
@@ -118,6 +119,9 @@ def run_group_tests(args):
     if coverage and args.group not in no_coverage:
         github_output("crate_flags", args.group)
 
+    junit_dir = Path("target/test-results")
+    junit_dir.mkdir(parents=True, exist_ok=True)
+
     for crate in crates:
         # Skip dash-fuzz on Windows
         if args.os == "windows-latest" and crate == "dash-fuzz":
@@ -127,17 +131,39 @@ def run_group_tests(args):
         github_group_start(f"Testing {crate}")
 
         if coverage and args.group not in no_coverage:
-            cmd = ["cargo", "llvm-cov", "--no-report", "-p", crate, "--all-features"]
+            cmd = [
+                "cargo", "llvm-cov", "nextest",
+                "--no-report", "-p", crate, "--all-features",
+                "--profile", "ci",
+                "--no-tests=pass",
+            ]
         else:
-            cmd = ["cargo", "test", "-p", crate, "--all-features"]
+            cmd = [
+                "cargo", "nextest", "run",
+                "-p", crate, "--all-features",
+                "--profile", "ci",
+                "--no-tests=pass",
+            ]
         result = subprocess.run(cmd)
 
+        # Collect JUnit XML per crate for Codecov test analytics
+        src = Path("target/nextest/ci/junit.xml")
+        if src.exists():
+            shutil.copy(src, junit_dir / f"junit-{crate}.xml")
+
         github_group_end()
 
         if result.returncode != 0:
             failed.append(crate)
             github_error(f"Test failed for {crate} on {args.os}")
 
+    junit_files = sorted(junit_dir.glob("junit-*.xml"))
+    if junit_files:
+        github_output(
+            "junit_files",
+            ",".join(str(f).replace("\\", "/") for f in junit_files),
+        )
+
     if failed:
         print("\n" + "=" * 40)
         print(f"FAILED TESTS ({args.group} on {args.os}):")

.github/workflows/build-and-test.yml

@@ -42,6 +42,9 @@ jobs:
         with:
           shared-key: "test-${{ inputs.os }}-${{ matrix.group }}"
 
+      - name: Install cargo-nextest
+        uses: taiki-e/install-action@nextest
+
       - name: Install cargo-llvm-cov
         if: inputs.coverage
         uses: taiki-e/install-action@cargo-llvm-cov
@@ -85,6 +88,14 @@ jobs:
           token: ${{ secrets.CODECOV_TOKEN }}
           fail_ci_if_error: true
 
+      - name: Upload test results to Codecov
+        if: ${{ !cancelled() && steps.tests.outputs.junit_files }}
+        uses: codecov/test-results-action@v1
+        with:
+          files: ${{ steps.tests.outputs.junit_files }}
+          flags: ${{ matrix.group }}
+          token: ${{ secrets.CODECOV_TOKEN }}
+
       - name: Upload failed dashd test logs
         if: failure() && (matrix.group == 'spv' || matrix.group == 'ffi')
         uses: actions/upload-artifact@v4