test(#812): reproduce false-positive gitea review comment

packages/mosaic/framework/tools/git/test-pr-review-gitea-comment.sh

@@ -0,0 +1,144 @@
+#!/usr/bin/env bash
+# Regression harness for durable Gitea PR review comments (#812).
+
+set -euo pipefail
+
+SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+WORK_DIR="${MOSAIC_TEST_WORK_DIR:-$PWD/.mosaic-test-work/pr-review-gitea-comment}"
+REPO_DIR="$WORK_DIR/repo"
+BIN_DIR="$WORK_DIR/bin"
+LOG_FILE="$WORK_DIR/tea.log"
+OUTPUT_FILE="$WORK_DIR/output.log"
+
+cleanup() {
+    rm -rf "$WORK_DIR"
+}
+trap cleanup EXIT
+
+mkdir -p "$REPO_DIR" "$BIN_DIR"
+git -C "$REPO_DIR" init -q
+git -C "$REPO_DIR" remote add origin https://git.mosaicstack.dev/mosaicstack/stack.git
+
+cat > "$BIN_DIR/tea" <<'SH'
+#!/usr/bin/env bash
+set -euo pipefail
+
+printf '%s\n' "$*" >> "$PR_REVIEW_TEST_LOG"
+
+if [[ "$*" == "login list --output json" ]]; then
+    printf '%s\n' '[{"name":"mosaicstack","url":"https://git.mosaicstack.dev"}]'
+    exit 0
+fi
+
+case "${PR_REVIEW_TEST_MODE:-}" in
+    approve)
+        [[ "$*" == "pr approve 123 --repo mosaicstack/stack --login mosaicstack" ]] || exit 90
+        ;;
+    request-changes)
+        [[ "$*" == "pr reject 123 --repo mosaicstack/stack --login mosaicstack --comment changes-required" ]] || exit 91
+        ;;
+    legacy-fallback)
+        if [[ "$*" == pr\ comment* ]]; then
+            # tea v0.11.1 treats the nonexistent subcommand as `tea pr list` and exits 0.
+            printf '%s\n' 'INDEX TITLE STATE'
+            exit 0
+        fi
+        if [[ "$*" == comment* ]]; then
+            printf '%s\n' 'supported comment write deliberately unavailable' >&2
+            exit 23
+        fi
+        exit 92
+        ;;
+    comment-success|readback-failure)
+        if [[ "$*" == "comment 123 durable-body --login mosaicstack --repo mosaicstack/stack --output json" ]]; then
+            printf '%s\n' '{"id":456,"body":"durable-body"}'
+            exit 0
+        fi
+        if [[ "$*" == "api --login mosaicstack /repos/mosaicstack/stack/issues/comments/456" ]]; then
+            if [[ "$PR_REVIEW_TEST_MODE" == "readback-failure" ]]; then
+                printf '%s\n' '{"id":456,"body":"different-body","issue_url":"https://git.mosaicstack.dev/api/v1/repos/mosaicstack/stack/issues/123"}'
+            else
+                printf '%s\n' '{"id":456,"body":"durable-body","issue_url":"https://git.mosaicstack.dev/api/v1/repos/mosaicstack/stack/issues/123"}'
+            fi
+            exit 0
+        fi
+        if [[ "$*" == pr\ comment* ]]; then
+            # Reproduce the old false-positive fallback if the wrapper regresses.
+            printf '%s\n' 'INDEX TITLE STATE'
+            exit 0
+        fi
+        exit 93
+        ;;
+    write-failure)
+        if [[ "$*" == "comment 123 durable-body --login mosaicstack --repo mosaicstack/stack --output json" ]]; then
+            printf '%s\n' 'provider rejected comment' >&2
+            exit 24
+        fi
+        exit 94
+        ;;
+    *)
+        exit 95
+        ;;
+esac
+SH
+chmod +x "$BIN_DIR/tea"
+
+run_review() {
+    local mode="$1" action="$2" comment="${3:-}"
+    : > "$LOG_FILE"
+    : > "$OUTPUT_FILE"
+    (
+        cd "$REPO_DIR"
+        PATH="$BIN_DIR:$PATH" \
+        PR_REVIEW_TEST_LOG="$LOG_FILE" \
+        PR_REVIEW_TEST_MODE="$mode" \
+        "$SCRIPT_DIR/pr-review.sh" -n 123 -a "$action" ${comment:+-c "$comment"}
+    ) > "$OUTPUT_FILE" 2>&1
+}
+
+run_review approve approve
+grep -q '^pr approve 123 --repo mosaicstack/stack --login mosaicstack$' "$LOG_FILE"
+grep -q 'Approved Gitea PR #123' "$OUTPUT_FILE"
+
+run_review request-changes request-changes changes-required
+grep -q '^pr reject 123 --repo mosaicstack/stack --login mosaicstack --comment changes-required$' "$LOG_FILE"
+grep -q 'Requested changes on Gitea PR #123' "$OUTPUT_FILE"
+
+if run_review legacy-fallback comment durable-body; then
+    echo "The old nonexistent tea pr comment fallback returned success" >&2
+    cat "$OUTPUT_FILE" >&2
+    exit 1
+fi
+if grep -q '^pr comment ' "$LOG_FILE"; then
+    echo "Wrapper invoked unsupported tea pr comment" >&2
+    exit 1
+fi
+if grep -q 'Added comment to Gitea PR' "$OUTPUT_FILE"; then
+    echo "Wrapper reported success without durable persistence" >&2
+    exit 1
+fi
+
+run_review comment-success comment durable-body
+grep -q '^comment 123 durable-body --login mosaicstack --repo mosaicstack/stack --output json$' "$LOG_FILE"
+grep -q '^api --login mosaicstack /repos/mosaicstack/stack/issues/comments/456$' "$LOG_FILE"
+grep -q 'Added and verified comment on Gitea PR #123' "$OUTPUT_FILE"
+
+if run_review write-failure comment durable-body; then
+    echo "Expected provider write failure to return nonzero" >&2
+    exit 1
+fi
+if grep -q 'Added and verified comment' "$OUTPUT_FILE"; then
+    echo "Write failure reported durable success" >&2
+    exit 1
+fi
+
+if run_review readback-failure comment durable-body; then
+    echo "Expected mismatched provider read-back to return nonzero" >&2
+    exit 1
+fi
+if grep -q 'Added and verified comment' "$OUTPUT_FILE"; then
+    echo "Read-back mismatch reported durable success" >&2
+    exit 1
+fi
+
+echo "pr-review.sh durable Gitea comment regression passed"