change(ci): Overhaul CI test flow management

Author: lucasssvaz

.github/CODEOWNERS

@@ -72,9 +72,9 @@
 /libraries/Wire/ @me-no-dev
 /libraries/Zigbee/ @P-R-O-C-H-Y
 
-# CI JSON
+# CI YAML
 # Keep this after other libraries and tests to avoid being overridden.
-**/ci.json @lucasssvaz
+**/ci.yml @lucasssvaz
 
 # The CODEOWNERS file should be owned by the developers of the ESP32 Arduino Core.
 # Leave this entry as the last one to avoid being overridden.

.github/scripts/generate_missing_junits.py

@@ -0,0 +1,246 @@
+#!/usr/bin/env python3
+
+import json
+import os
+import re
+import sys
+from pathlib import Path
+from xml.etree.ElementTree import Element, SubElement, ElementTree
+import yaml
+
+
+def parse_array(value) -> list[str]:
+    if isinstance(value, list):
+        return [str(x) for x in value]
+    if not isinstance(value, str):
+        return []
+    txt = value.strip()
+    if not txt:
+        return []
+    # Try JSON
+    try:
+        return [str(x) for x in json.loads(txt)]
+    except Exception:
+        pass
+    # Normalize single quotes then JSON
+    try:
+        fixed = txt.replace("'", '"')
+        return [str(x) for x in json.loads(fixed)]
+    except Exception:
+        pass
+    # Fallback: CSV
+    return [p.strip() for p in txt.strip("[]").split(",") if p.strip()]
+
+
+def _parse_ci_yml(content: str) -> dict:
+    if not content:
+        return {}
+    try:
+        data = yaml.safe_load(content) or {}
+        if not isinstance(data, dict):
+            return {}
+        return data
+    except Exception:
+        return {}
+
+
+def _fqbn_counts_from_yaml(ci: dict) -> dict[str, int]:
+    counts: dict[str, int] = {}
+    if not isinstance(ci, dict):
+        return counts
+    fqbn = ci.get("fqbn")
+    if not isinstance(fqbn, dict):
+        return counts
+    for target, entries in fqbn.items():
+        if isinstance(entries, list):
+            counts[str(target)] = len(entries)
+        elif entries is not None:
+            # Single value provided as string
+            counts[str(target)] = 1
+    return counts
+
+
+def _sdkconfig_meets(ci_cfg: dict, sdk_text: str) -> bool:
+    if not sdk_text:
+        return True
+    for req in ci_cfg.get("requires", []):
+        if not req or not isinstance(req, str):
+            continue
+        if not any(line.startswith(req) for line in sdk_text.splitlines()):
+            return False
+    req_any = ci_cfg.get("requires_any", [])
+    if req_any:
+        if not any(any(line.startswith(r.strip()) for line in sdk_text.splitlines()) for r in req_any if isinstance(r, str)):
+            return False
+    return True
+
+
+def expected_from_artifacts(build_root: Path) -> dict[tuple[str, str, str, str], int]:
+    """Compute expected runs using ci.yml and sdkconfig found in build artifacts.
+    Returns mapping (platform, target, type, sketch) -> expected_count
+    """
+    expected: dict[tuple[str, str, str, str], int] = {}
+    if not build_root.exists():
+        return expected
+    for artifact_dir in build_root.iterdir():
+        if not artifact_dir.is_dir():
+            continue
+        m = re.match(r"test-bin-([A-Za-z0-9_\-]+)-([A-Za-z0-9_\-]+)", artifact_dir.name)
+        if not m:
+            continue
+        target = m.group(1)
+        test_type = m.group(2)
+        # Walk build*.tmp directories which contain ci.yml and sdkconfig
+        for p in artifact_dir.rglob("*.tmp"):
+            if not p.is_dir() or not re.search(r"build\d*\.tmp$", str(p)):
+                continue
+            # Infer sketch name from path
+            parts = p.parts
+            try:
+                idx = parts.index(".arduino")
+            except ValueError:
+                continue
+            if idx + 4 >= len(parts) or parts[idx + 1] != "tests":
+                continue
+            sketch_target = parts[idx + 2]
+            sketch = parts[idx + 3]
+            if sketch_target != target:
+                continue
+            ci_path = p / "ci.yml"
+            sdk_path = p / "sdkconfig"
+            try:
+                ci_text = ci_path.read_text(encoding="utf-8") if ci_path.exists() else ""
+            except Exception:
+                ci_text = ""
+            try:
+                sdk_text = sdk_path.read_text(encoding="utf-8", errors="ignore") if sdk_path.exists() else ""
+            except Exception:
+                sdk_text = ""
+            ci = _parse_ci_yml(ci_text)
+            fqbn_counts = _fqbn_counts_from_yaml(ci)
+            # Determine allowed platforms for this test
+            allowed_platforms = []
+            platforms_cfg = ci.get("platforms") if isinstance(ci, dict) else None
+            for plat in ("hardware", "wokwi", "qemu"):
+                dis = None
+                if isinstance(platforms_cfg, dict):
+                    dis = platforms_cfg.get(plat)
+                if dis is False:
+                    continue
+                allowed_platforms.append(plat)
+            # Requirements check
+            minimal = {
+                "requires": ci.get("requires") or [],
+                "requires_any": ci.get("requires_any") or [],
+            }
+            if not _sdkconfig_meets(minimal, sdk_text):
+                continue
+            # Expected runs per target driven by fqbn count; default 1 when 0
+            exp_runs = fqbn_counts.get(target, 0) or 1
+            for plat in allowed_platforms:
+                expected[(plat, target, test_type, sketch)] = max(expected.get((plat, target, test_type, sketch), 0), exp_runs)
+    return expected
+
+
+def scan_executed_xml(xml_root: Path) -> dict[tuple[str, str, str, str], int]:
+    """Return executed counts per (platform, target, type, sketch)."""
+    counts: dict[tuple[str, str, str, str], int] = {}
+    if not xml_root.exists():
+        return counts
+    for xml_path in xml_root.rglob("*.xml"):
+        if not xml_path.is_file():
+            continue
+        rel = str(xml_path)
+        platform = "hardware"
+        if "test-results-wokwi-" in rel:
+            platform = "wokwi"
+        elif "test-results-qemu-" in rel:
+            platform = "qemu"
+        # Expect tests/<type>/<sketch>/<target>/<sketch>.xml
+        # Find 'tests' segment
+        parts = xml_path.parts
+        try:
+            t_idx = parts.index("tests")
+        except ValueError:
+            continue
+        if t_idx + 4 >= len(parts):
+            continue
+        test_type = parts[t_idx + 1]
+        sketch = parts[t_idx + 2]
+        target = parts[t_idx + 3]
+        key = (platform, target, test_type, sketch)
+        counts[key] = counts.get(key, 0) + 1
+    return counts
+
+
+def write_missing_xml(out_root: Path, platform: str, target: str, test_type: str, sketch: str, missing_count: int):
+    out_tests_dir = out_root / f"test-results-{platform}" / "tests" / test_type / sketch / target
+    out_tests_dir.mkdir(parents=True, exist_ok=True)
+    # Create one XML per missing index
+    for idx in range(missing_count):
+        suite_name = f"{test_type}_{platform}_{target}_{sketch}"
+        root = Element("testsuite", name=suite_name, tests="1", failures="1", errors="0")
+        case = SubElement(root, "testcase", classname=f"{test_type}.{sketch}", name="missing-run")
+        fail = SubElement(case, "failure", message="Expected test run missing")
+        fail.text = "This placeholder indicates an expected test run did not execute."
+        tree = ElementTree(root)
+        out_file = out_tests_dir / f"{sketch}_missing_{idx}.xml"
+        tree.write(out_file, encoding="utf-8", xml_declaration=True)
+
+
+def main():
+    # Args: <build_artifacts_dir> <test_results_dir> <output_junit_dir>
+    if len(sys.argv) != 4:
+        print(f"Usage: {sys.argv[0]} <build_artifacts_dir> <test_results_dir> <output_junit_dir>", file=sys.stderr)
+        return 2
+
+    build_root = Path(sys.argv[1]).resolve()
+    results_root = Path(sys.argv[2]).resolve()
+    out_root = Path(sys.argv[3]).resolve()
+
+    # Read matrices from environment variables injected by workflow
+    hw_enabled = (os.environ.get("HW_TESTS_ENABLED", "false").lower() == "true")
+    wokwi_enabled = (os.environ.get("WOKWI_TESTS_ENABLED", "false").lower() == "true")
+    qemu_enabled = (os.environ.get("QEMU_TESTS_ENABLED", "false").lower() == "true")
+
+    hw_targets = parse_array(os.environ.get("HW_TARGETS", "[]"))
+    wokwi_targets = parse_array(os.environ.get("WOKWI_TARGETS", "[]"))
+    qemu_targets = parse_array(os.environ.get("QEMU_TARGETS", "[]"))
+
+    hw_types = parse_array(os.environ.get("HW_TYPES", "[]"))
+    wokwi_types = parse_array(os.environ.get("WOKWI_TYPES", "[]"))
+    qemu_types = parse_array(os.environ.get("QEMU_TYPES", "[]"))
+
+    expected = expected_from_artifacts(build_root)  # (platform, target, type, sketch) -> expected_count
+    executed = scan_executed_xml(results_root)      # (platform, target, type, sketch) -> count
+
+    # Filter expected by enabled platforms and target/type matrices
+    enabled_plats = set()
+    if hw_enabled:
+        enabled_plats.add("hardware")
+    if wokwi_enabled:
+        enabled_plats.add("wokwi")
+    if qemu_enabled:
+        enabled_plats.add("qemu")
+
+    target_set = set(hw_targets + wokwi_targets + qemu_targets)
+    type_set = set(hw_types + wokwi_types + qemu_types)
+
+    missing_total = 0
+    for (plat, target, test_type, sketch), exp_count in expected.items():
+        if plat not in enabled_plats:
+            continue
+        if target not in target_set or test_type not in type_set:
+            continue
+        got = executed.get((plat, target, test_type, sketch), 0)
+        if got < exp_count:
+            write_missing_xml(out_root, plat, target, test_type, sketch, exp_count - got)
+            missing_total += (exp_count - got)
+
+    print(f"Generated {missing_total} placeholder JUnit files for missing runs.", file=sys.stderr)
+
+
+if __name__ == "__main__":
+    sys.exit(main())
+
+

.github/scripts/get_affected.py

@@ -63,7 +63,7 @@
 Build file patterns
 --------------------
 - **build_files**: Core Arduino build system files (platform.txt, variants/**, etc.)
-- **sketch_build_files**: Sketch-specific files (ci.json, *.csv in example directories)
+- **sketch_build_files**: Sketch-specific files (ci.yml, *.csv in example directories)
 - **idf_build_files**: Core IDF build system files (CMakeLists.txt, idf_component.yml, etc.)
 - **idf_project_files**: Project-specific IDF files (per-example CMakeLists.txt, sdkconfig, etc.)
 
@@ -128,7 +128,7 @@
 # Files that are used by the sketch build system.
 # If any of these files change, the sketch should be recompiled.
 sketch_build_files = [
-    "libraries/*/examples/**/ci.json",
+    "libraries/*/examples/**/ci.yml",
     "libraries/*/examples/**/*.csv",
 ]
 
@@ -150,7 +150,7 @@
 # If any of these files change, the example that uses them should be recompiled.
 idf_project_files = [
     "idf_component_examples/*/CMakeLists.txt",
-    "idf_component_examples/*/ci.json",
+    "idf_component_examples/*/ci.yml",
     "idf_component_examples/*/*.csv",
     "idf_component_examples/*/sdkconfig*",
     "idf_component_examples/*/main/*",

.github/scripts/on-push-idf.sh

@@ -17,9 +17,9 @@ fi
 
 for example in $affected_examples; do
     example_path="$PWD/components/arduino-esp32/$example"
-    if [ -f "$example_path/ci.json" ]; then
+    if [ -f "$example_path/ci.yml" ]; then
         # If the target is listed as false, skip the sketch. Otherwise, include it.
-        is_target=$(jq -r --arg target "$IDF_TARGET" '.targets[$target]' "$example_path/ci.json")
+        is_target=$(yq eval ".targets.${IDF_TARGET}" "$example_path/ci.yml" 2>/dev/null)
         if [[ "$is_target" == "false" ]]; then
             printf "\n\033[93mSkipping %s for target %s\033[0m\n\n" "$example" "$IDF_TARGET"
             continue