feat(runner): add --log-gha for GitHub Actions annotations

.env.example

@@ -39,6 +39,7 @@ BASHUNIT_LOGIN_SHELL=               # Default: false (source login shell profile
 # Reports
 #───────────────────────────────────────────────────────────────────────────────
 BASHUNIT_LOG_JUNIT=                 # JUnit XML report path (e.g., report.xml)
+BASHUNIT_LOG_GHA=                   # GitHub Actions workflow-commands log path (e.g., gha.log)
 BASHUNIT_REPORT_HTML=               # HTML test report path (e.g., report.html)
 
 #───────────────────────────────────────────────────────────────────────────────

CHANGELOG.md

@@ -6,6 +6,7 @@
 - `bashunit::spy` accepts an optional exit code or custom implementation function (#600)
 - Assert functions accept an optional trailing label to override the failure title (#77)
 - `--fail-on-risky` flag and `BASHUNIT_FAIL_ON_RISKY` env var treat no-assertion tests as failures (#115)
+- `--log-gha <file>` flag and `BASHUNIT_LOG_GHA` env var emit GitHub Actions workflow commands so failed, risky and incomplete tests show up as inline PR annotations (#280)
 
 ### Changed
 - Parallel test execution is now enabled on Alpine Linux (#370)

docs/command-line.md

@@ -62,6 +62,7 @@ bashunit test tests/ --parallel --simple
 | `--output <format>`            | Output format (`tap` for TAP version 13)         |
 | `-w, --watch`                  | Watch files and re-run tests on change           |
 | `--log-junit <file>`           | Write JUnit XML report                           |
+| `--log-gha <file>`             | Write GitHub Actions workflow-commands log       |
 | `-j, --jobs <N>`               | Run tests in parallel with max N concurrent jobs |
 | `-p, --parallel`               | Run tests in parallel                            |
 | `--no-parallel`                | Run tests sequentially                           |
@@ -358,8 +359,13 @@ bashunit test tests/ --log-junit results.xml
 ```bash [HTML Report]
 bashunit test tests/ --report-html report.html
 ```
+```bash [GitHub Actions]
+bashunit test tests/ --log-gha gha.log && cat gha.log
+```
 :::
 
+The `--log-gha` flag writes GitHub Actions workflow commands (`::error`, `::warning`, `::notice`) for failed, risky and incomplete tests. When streamed to stdout on a runner, they appear as inline annotations in the "Files changed" tab of a pull request.
+
 ### Show Output on Failure
 
 > `bashunit test --show-output`

docs/configuration.md

@@ -231,6 +231,23 @@ BASHUNIT_LOG_JUNIT=log-junit.xml
 ```
 :::
 
+## Log GitHub Actions
+
+> `BASHUNIT_LOG_GHA=file`
+
+Write GitHub Actions workflow commands (`::error`, `::warning`, `::notice`) to the given file, so failed, risky and incomplete tests show up as inline annotations in the "Files changed" tab of a pull request.
+
+On a CI runner, stream the generated file to stdout so GitHub parses it:
+
+::: code-group
+```bash [Example]
+BASHUNIT_LOG_GHA=gha.log
+```
+```yaml [GitHub Actions workflow]
+- run: ./bashunit --log-gha gha.log tests/ || (cat gha.log && exit 1)
+```
+:::
+
 ## Report HTML
 
 > `BASHUNIT_REPORT_HTML=file`

src/env.sh

@@ -14,6 +14,7 @@ _BASHUNIT_DEFAULT_DEFAULT_PATH="tests"
 _BASHUNIT_DEFAULT_BOOTSTRAP="tests/bootstrap.sh"
 _BASHUNIT_DEFAULT_DEV_LOG=""
 _BASHUNIT_DEFAULT_LOG_JUNIT=""
+_BASHUNIT_DEFAULT_LOG_GHA=""
 _BASHUNIT_DEFAULT_REPORT_HTML=""
 
 # Coverage defaults (following kcov, bashcov, SimpleCov conventions)
@@ -31,6 +32,7 @@ _BASHUNIT_DEFAULT_COVERAGE_THRESHOLD_HIGH="80"
 : "${BASHUNIT_BOOTSTRAP:=${BOOTSTRAP:=$_BASHUNIT_DEFAULT_BOOTSTRAP}}"
 : "${BASHUNIT_BOOTSTRAP_ARGS:=${BOOTSTRAP_ARGS:=}}"
 : "${BASHUNIT_LOG_JUNIT:=${LOG_JUNIT:=$_BASHUNIT_DEFAULT_LOG_JUNIT}}"
+: "${BASHUNIT_LOG_GHA:=${LOG_GHA:=$_BASHUNIT_DEFAULT_LOG_GHA}}"
 : "${BASHUNIT_REPORT_HTML:=${REPORT_HTML:=$_BASHUNIT_DEFAULT_REPORT_HTML}}"
 
 # Coverage
@@ -236,6 +238,7 @@ function bashunit::env::print_verbose() {
     "BASHUNIT_BOOTSTRAP"
     "BASHUNIT_BOOTSTRAP_ARGS"
     "BASHUNIT_LOG_JUNIT"
+    "BASHUNIT_LOG_GHA"
     "BASHUNIT_REPORT_HTML"
     "BASHUNIT_PARALLEL_RUN"
     "BASHUNIT_SHOW_HEADER"

src/main.sh

@@ -96,6 +96,10 @@ function bashunit::main::cmd_test() {
       export BASHUNIT_LOG_JUNIT="$2"
       shift
       ;;
+    --log-gha)
+      export BASHUNIT_LOG_GHA="$2"
+      shift
+      ;;
     -r | --report-html)
       export BASHUNIT_REPORT_HTML="$2"
       shift
@@ -692,6 +696,10 @@ function bashunit::main::exec_tests() {
     bashunit::reports::generate_junit_xml "$BASHUNIT_LOG_JUNIT"
   fi
 
+  if [ -n "$BASHUNIT_LOG_GHA" ]; then
+    bashunit::reports::generate_gha_log "$BASHUNIT_LOG_GHA"
+  fi
+
   if [ -n "$BASHUNIT_REPORT_HTML" ]; then
     bashunit::reports::generate_report_html "$BASHUNIT_REPORT_HTML"
   fi

src/reports.sh

@@ -34,7 +34,11 @@ function bashunit::reports::add_test_failed() {
 
 function bashunit::reports::add_test() {
   # Skip tracking when no report output is requested
-  { [ -n "${BASHUNIT_LOG_JUNIT:-}" ] || [ -n "${BASHUNIT_REPORT_HTML:-}" ]; } || return 0
+  {
+    [ -n "${BASHUNIT_LOG_JUNIT:-}" ] ||
+      [ -n "${BASHUNIT_REPORT_HTML:-}" ] ||
+      [ -n "${BASHUNIT_LOG_GHA:-}" ]
+  } || return 0
 
   local file="$1"
   local test_name="$2"
@@ -114,6 +118,56 @@ function bashunit::reports::generate_junit_xml() {
   } >"$output_file"
 }
 
+function bashunit::reports::__gha_encode() {
+  local text="$1"
+  # Strip ANSI escape sequences first (one sed call)
+  text=$(printf '%s' "$text" | sed -e 's/\x1b\[[0-9;]*[a-zA-Z]//g')
+  # Percent-encode reserved chars per GHA workflow-commands spec.
+  # Bash 3.0+ parameter expansion avoids extra awk/sed calls.
+  # Order matters: encode '%' first so the sequences we inject stay literal.
+  text="${text//%/%25}"
+  text="${text//$'\r'/%0D}"
+  text="${text//$'\n'/%0A}"
+  printf '%s' "$text"
+}
+
+function bashunit::reports::generate_gha_log() {
+  local output_file="$1"
+
+  : >"$output_file"
+
+  local i
+  for i in "${!_BASHUNIT_REPORTS_TEST_NAMES[@]}"; do
+    local file="${_BASHUNIT_REPORTS_TEST_FILES[$i]:-}"
+    local name="${_BASHUNIT_REPORTS_TEST_NAMES[$i]:-}"
+    local status="${_BASHUNIT_REPORTS_TEST_STATUSES[$i]:-}"
+    local failure_message="${_BASHUNIT_REPORTS_TEST_FAILURES[$i]:-}"
+    local level="" message=""
+
+    case "$status" in
+      failed)
+        level="error"
+        message="$failure_message"
+        ;;
+      risky)
+        level="warning"
+        message="Test has no assertions (risky)"
+        ;;
+      incomplete)
+        level="notice"
+        message="Test incomplete"
+        ;;
+      *)
+        continue
+        ;;
+    esac
+
+    local encoded_message
+    encoded_message=$(bashunit::reports::__gha_encode "$message")
+    echo "::${level} file=${file},title=${name}::${encoded_message}" >>"$output_file"
+  done
+}
+
 function bashunit::reports::generate_report_html() {
   local output_file="$1"
 

tests/acceptance/bashunit_log_gha_test.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+
+function set_up_before_script() {
+  TEST_ENV_FILE="tests/acceptance/fixtures/.env.default"
+  TEST_ENV_FILE_BASHUNIT_LOG_GHA="tests/acceptance/fixtures/.env.log_gha"
+}
+
+function test_bashunit_when_log_gha_option() {
+  local test_file=./tests/acceptance/fixtures/test_bashunit_when_log_junit.sh
+  local log_file
+  log_file=$(mktemp "${TMPDIR:-/tmp}/bashunit-gha-opt.XXXXXX")
+
+  # Inner suite has a failing test, so bashunit exits nonzero; tolerate it
+  # so the acceptance test keeps running under --strict (set -e).
+  ./bashunit --no-parallel --env "$TEST_ENV_FILE" --log-gha "$log_file" "$test_file" >/dev/null || true
+
+  assert_file_exists "$log_file"
+  assert_contains "::error file=$test_file" "$(cat "$log_file")"
+  assert_contains "title=Failure" "$(cat "$log_file")"
+  rm -f "$log_file"
+}
+
+function test_bashunit_when_log_gha_env() {
+  local test_file=./tests/acceptance/fixtures/test_bashunit_when_log_junit.sh
+
+  ./bashunit --no-parallel --env "$TEST_ENV_FILE_BASHUNIT_LOG_GHA" "$test_file" >/dev/null || true
+
+  assert_file_exists log-gha.txt
+  assert_contains "::error" "$(cat log-gha.txt)"
+  rm -f log-gha.txt
+}

tests/acceptance/fixtures/.env.log_gha

@@ -0,0 +1,12 @@
+BASHUNIT_DEFAULT_PATH=
+BASHUNIT_LOG_GHA=log-gha.txt
+
+BASHUNIT_SHOW_HEADER=false
+BASHUNIT_HEADER_ASCII_ART=false
+BASHUNIT_SIMPLE_OUTPUT=false
+BASHUNIT_STOP_ON_FAILURE=false
+BASHUNIT_SHOW_EXECUTION_TIME=false
+BASHUNIT_VERBOSE=false
+BASHUNIT_SHOW_SKIPPED=false
+BASHUNIT_SHOW_INCOMPLETE=false
+BASHUNIT_FAILURES_ONLY=false

tests/unit/reports_test.sh

@@ -18,6 +18,7 @@ function set_up() {
   # Unset report env vars by default
   unset BASHUNIT_LOG_JUNIT
   unset BASHUNIT_REPORT_HTML
+  unset BASHUNIT_LOG_GHA
 
   # Create temp file for output tests
   _TEMP_OUTPUT_FILE=$(mktemp)
@@ -30,6 +31,7 @@ function tear_down() {
   # Restore env vars
   unset BASHUNIT_LOG_JUNIT
   unset BASHUNIT_REPORT_HTML
+  unset BASHUNIT_LOG_GHA
 }
 
 # Mock functions for report generation tests
@@ -117,6 +119,14 @@ function test_add_test_tracks_when_html_report_enabled() {
   assert_same "1" "${#_BASHUNIT_REPORTS_TEST_NAMES[@]}"
 }
 
+function test_add_test_tracks_when_gha_log_enabled() {
+  BASHUNIT_LOG_GHA="gha.log"
+
+  bashunit::reports::add_test "file.sh" "test_name" "100" "3" "passed"
+
+  assert_same "1" "${#_BASHUNIT_REPORTS_TEST_NAMES[@]}"
+}
+
 function test_add_test_populates_all_arrays() {
   BASHUNIT_LOG_JUNIT="report.xml"
 
@@ -305,6 +315,111 @@ function test_generate_report_html_groups_tests_by_file() {
   assert_contains '<h2>File: file_b.sh</h2>' "$content"
 }
 
+# === GitHub Actions log generation tests ===
+
+function test_generate_gha_log_emits_error_for_failed_test() {
+  _mock_state_functions
+  BASHUNIT_LOG_GHA="gha.log"
+
+  bashunit::reports::add_test "tests/foo_test.sh" "test_fail" "100" "1" "failed" "expected 1 got 2"
+  bashunit::reports::generate_gha_log "$_TEMP_OUTPUT_FILE"
+
+  local content
+  content=$(cat "$_TEMP_OUTPUT_FILE")
+
+  assert_contains '::error file=tests/foo_test.sh' "$content"
+  assert_contains 'title=test_fail' "$content"
+  assert_contains 'expected 1 got 2' "$content"
+}
+
+function test_generate_gha_log_emits_warning_for_risky_test() {
+  _mock_state_functions
+  BASHUNIT_LOG_GHA="gha.log"
+
+  bashunit::reports::add_test "tests/foo_test.sh" "test_risky" "10" "0" "risky"
+  bashunit::reports::generate_gha_log "$_TEMP_OUTPUT_FILE"
+
+  local content
+  content=$(cat "$_TEMP_OUTPUT_FILE")
+
+  assert_contains '::warning file=tests/foo_test.sh' "$content"
+  assert_contains 'title=test_risky' "$content"
+  assert_contains 'no assertions' "$content"
+}
+
+function test_generate_gha_log_emits_notice_for_incomplete_test() {
+  _mock_state_functions
+  BASHUNIT_LOG_GHA="gha.log"
+
+  bashunit::reports::add_test "tests/foo_test.sh" "test_incomplete" "0" "0" "incomplete"
+  bashunit::reports::generate_gha_log "$_TEMP_OUTPUT_FILE"
+
+  local content
+  content=$(cat "$_TEMP_OUTPUT_FILE")
+
+  assert_contains '::notice file=tests/foo_test.sh' "$content"
+  assert_contains 'title=test_incomplete' "$content"
+}
+
+function test_generate_gha_log_skips_passed_test() {
+  _mock_state_functions
+  BASHUNIT_LOG_GHA="gha.log"
+
+  bashunit::reports::add_test "tests/foo_test.sh" "test_ok" "100" "1" "passed"
+  bashunit::reports::generate_gha_log "$_TEMP_OUTPUT_FILE"
+
+  local content
+  content=$(cat "$_TEMP_OUTPUT_FILE")
+
+  assert_empty "$content"
+}
+
+function test_generate_gha_log_skips_skipped_test() {
+  _mock_state_functions
+  BASHUNIT_LOG_GHA="gha.log"
+
+  bashunit::reports::add_test "tests/foo_test.sh" "test_skip" "0" "0" "skipped"
+  bashunit::reports::generate_gha_log "$_TEMP_OUTPUT_FILE"
+
+  local content
+  content=$(cat "$_TEMP_OUTPUT_FILE")
+
+  assert_empty "$content"
+}
+
+function test_generate_gha_log_encodes_newlines_in_message() {
+  _mock_state_functions
+  BASHUNIT_LOG_GHA="gha.log"
+
+  local msg
+  msg=$(printf 'line one\nline two')
+  bashunit::reports::add_test "tests/foo_test.sh" "test_multi" "100" "1" "failed" "$msg"
+  bashunit::reports::generate_gha_log "$_TEMP_OUTPUT_FILE"
+
+  local content
+  content=$(cat "$_TEMP_OUTPUT_FILE")
+
+  assert_contains 'line one%0Aline two' "$content"
+  assert_not_contains 'line one
+line two' "$content"
+}
+
+function test_generate_gha_log_strips_ansi_color_codes() {
+  _mock_state_functions
+  BASHUNIT_LOG_GHA="gha.log"
+
+  local msg
+  msg=$(printf 'expected \033[32mgreen\033[0m got \033[31mred\033[0m')
+  bashunit::reports::add_test "tests/foo_test.sh" "test_color" "100" "1" "failed" "$msg"
+  bashunit::reports::generate_gha_log "$_TEMP_OUTPUT_FILE"
+
+  local content
+  content=$(cat "$_TEMP_OUTPUT_FILE")
+
+  assert_contains 'expected green got red' "$content"
+  assert_not_contains $'\033[' "$content"
+}
+
 function test_generate_report_html_applies_status_css_classes() {
   _mock_state_functions
   BASHUNIT_REPORT_HTML="report.html"