fix fragile tests

tests/check-version.bats

@@ -5,7 +5,6 @@ source "$BATS_TEST_DIRNAME/helpers/mock-api.sh"
 setup() {
   export GITEA_TOKEN=test-token
   export GIT_TAG_PREFIX=""
-  export SERVER_URL="http://localhost:18080"
   export REPO="niko/test"
   export SHA="abc123"
   rm -rf /tmp/build-ctx

tests/dispatch-workflow.bats

@@ -19,7 +19,7 @@ teardown() {
     {"code":200,"body":{"id":1,"status":"completed","conclusion":"success"}}
   ]'
   mock_start
-  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "http://localhost:18080" "test-token-abc123"
+  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "$GITEA_API_URL" "test-token-abc123"
   [ "$status" -eq 0 ]
 }
 
@@ -31,7 +31,7 @@ teardown() {
     {"code":200,"body":{"id":1,"status":"completed","conclusion":"failure"}}
   ]'
   mock_start
-  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "http://localhost:18080" "test-token-abc123"
+  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "$GITEA_API_URL" "test-token-abc123"
   [ "$status" -eq 1 ]
 }
 
@@ -43,7 +43,7 @@ teardown() {
     {"code":200,"body":{"id":1,"status":"completed","conclusion":"cancelled"}}
   ]'
   mock_start
-  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "http://localhost:18080" "test-token-abc123"
+  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "$GITEA_API_URL" "test-token-abc123"
   [ "$status" -eq 1 ]
 }
 
@@ -61,7 +61,7 @@ teardown() {
     {"code":200,"body":{"id":1,"status":"running"}}
   ]'
   mock_start
-  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "http://localhost:18080" "test-token-abc123" "0.001"
+  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "$GITEA_API_URL" "test-token-abc123" "0.001"
   [ "$status" -eq 124 ]
 }
 
@@ -70,7 +70,7 @@ teardown() {
     {"code":500}
   ]'
   mock_start
-  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "http://localhost:18080" "test-token-abc123"
+  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "$GITEA_API_URL" "test-token-abc123"
   [ "$status" -eq 1 ]
 }
 
@@ -81,7 +81,7 @@ teardown() {
     {"code":200,"body":{"id":1,"status":"completed","conclusion":"success"}}
   ]'
   mock_start
-  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "http://localhost:18080" "test-token-abc123"
+  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{"version":"1.2.3"}' "$GITEA_API_URL" "test-token-abc123"
   [ "$status" -eq 0 ]
   path=$(mock_get_first_request_path)
   [[ "$path" == *"/api/v1/repos/test-owner/test-repo/actions/workflows/test.yml/dispatches"* ]]
@@ -126,7 +126,7 @@ teardown() {
     {"code":200,"body":{"workflow_runs":[]}}
   ]'
   mock_start
-  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{}' "http://localhost:18080" "test-token-abc123"
+  run bash scripts/dispatch-workflow.sh "test-owner/test-repo" "test.yml" "main" '{}' "$GITEA_API_URL" "test-token-abc123"
   [ "$status" -eq 1 ]
   [[ "$output" == *"ERROR"* ]]
 }

tests/helpers/mock-api.sh

@@ -1,7 +1,7 @@
 #!/usr/bin/env bash
 set -euo pipefail
 
-MOCK_PORT=18080
+MOCK_PORT=""
 MOCK_PID=""
 MOCK_REQUEST_FILE=""
 MOCK_RESPONSE_CODE=201
@@ -9,11 +9,17 @@ MOCK_STATE_FILE="/tmp/mock_api_state"
 MOCK_SEQUENCE_FILE=""
 MOCK_CONFIG_FILE=""
 
+_free_port() {
+  python3 -c "import socket; s=socket.socket(); s.bind(('',0)); print(s.getsockname()[1]); s.close()"
+}
+
 _kill_port() {
   local pids
   pids=$(lsof -ti ":$MOCK_PORT" 2>/dev/null) || true
-  [ -n "$pids" ] && kill -9 $pids 2>/dev/null || true
+  [ -n "$pids" ] && kill $pids 2>/dev/null || true
   sleep 0.5
+  pids=$(lsof -ti ":$MOCK_PORT" 2>/dev/null) || true
+  [ -n "$pids" ] && kill -9 $pids 2>/dev/null || true
 }
 
 _wait_port_free() {
@@ -26,10 +32,14 @@ _wait_port_free() {
 
 _wait_port_ready() {
   local i=0
-  while ! lsof -ti ":$MOCK_PORT" >/dev/null 2>&1 && [ $i -lt 5 ]; do
+  while [ $i -lt 50 ]; do
+    if nc -z localhost "$MOCK_PORT" 2>/dev/null; then
+      return 0
+    fi
     sleep 0.2
     i=$((i + 1))
   done
+  return 1
 }
 
 mock_set_sequence() {
@@ -43,6 +53,12 @@ mock_clear_sequence() {
 }
 
 mock_start() {
+  MOCK_PORT=$(_free_port)
+  export MOCK_PORT
+  MOCK_URL="http://localhost:${MOCK_PORT}"
+  export SERVER_URL="$MOCK_URL"
+  export GITEA_API_URL="$MOCK_URL"
+
   MOCK_RESPONSE_CODE="${MOCK_RESPONSE_CODE:-201}"
   MOCK_REQUEST_FILE=$(mktemp)
   echo "$MOCK_REQUEST_FILE" > "$MOCK_STATE_FILE"

tests/publish-git-pages.bats

@@ -63,9 +63,10 @@ teardown() {
     {"code":200,"body":"published"}
   ]'
   mock_start
+  export GIT_PAGES_URL="http://localhost:${MOCK_PORT}"
   run bash scripts/publish-git-pages.sh "unit-tests"
   [ "$status" -eq 0 ]
-  [[ "$output" == "http://localhost:18080/test-owner/test-repo/reports/abc123de" ]]
+  [[ "$output" == "${GIT_PAGES_URL}/test-owner/test-repo/reports/abc123de" ]]
 }
 
 @test "publish with suite subpath" {
@@ -75,9 +76,10 @@ teardown() {
     {"code":200,"body":"published"}
   ]'
   mock_start
+  export GIT_PAGES_URL="http://localhost:${MOCK_PORT}"
   run bash scripts/publish-git-pages.sh "sub/suite"
   [ "$status" -eq 0 ]
-  [[ "$output" == "http://localhost:18080/test-owner/test-repo/reports/abc123de" ]]
+  [[ "$output" == "${GIT_PAGES_URL}/test-owner/test-repo/reports/abc123de" ]]
 }
 
 @test "git-pages returns HTTP 500 → exit 1" {
@@ -85,6 +87,7 @@ teardown() {
     {"code":500,"body":"internal error"}
   ]'
   mock_start
+  export GIT_PAGES_URL="http://localhost:${MOCK_PORT}"
   run bash scripts/publish-git-pages.sh "unit-tests"
   [ "$status" -eq 1 ]
   [[ "$output" == *"500"* ]]

tests/report-status.bats

@@ -23,7 +23,8 @@ teardown() {
   body=$(mock_get_request_body)
   [[ "$body" == *'"state":"pending"'* ]]
   [[ "$body" == *'"description":"Building project"'* ]]
-  [[ "$body" == *'"target_url":"http://localhost:18080/test-owner/test-repo/actions/runs/42"'* ]]
+  expected_url="${GITEA_API_URL}/test-owner/test-repo/actions/runs/42"
+  [[ "$body" == *"\"target_url\":\"${expected_url}\""* ]]
   method=$(mock_get_request_method)
   [[ "$method" == "POST" ]]
 }
@@ -44,7 +45,8 @@ teardown() {
   [ "$status" -eq 0 ]
   body=$(mock_get_request_body)
   [[ "$body" == *'"state":"failure"'* ]]
-  [[ "$body" == *'"target_url":"http://localhost:18080/test-owner/test-repo/actions/runs/42"'* ]]
+  expected_url="${GITEA_API_URL}/test-owner/test-repo/actions/runs/42"
+  [[ "$body" == *"\"target_url\":\"${expected_url}\""* ]]
 }
 
 @test "default key when not provided" {