Merge pull request #28 from jgrigg/concurrent_stubs

Isolate stubs to each individual test

Author: pzeballos

stub.bash

@@ -1,4 +1,4 @@
-BATS_MOCK_TMPDIR="${BATS_RUN_TMPDIR}"
+BATS_MOCK_TMPDIR="${BATS_TEST_TMPDIR}"
 BATS_MOCK_BINDIR="${BATS_MOCK_TMPDIR}/bin"
 
 BATS_MOCK_REAL_mkdir=$(which mkdir)

tests/concurrent_jobs.bats

@@ -0,0 +1,35 @@
+load '../stub'
+
+# Generates a temporary test file with the specified number of tests.
+# Each test stubs the SAME command and then unstubs to validate.
+generate_stubbed_test_file() {
+  local num_tests="$1"
+  local cmd_to_stub="$2"
+  local output_file="$3"
+  local bats_test_placeholder="@test"
+  echo "load '$(cd "${BATS_TEST_DIRNAME}/.." && echo "$(pwd)/stub")'" >"${output_file}"
+
+  local test_number
+  for test_number in $(seq 1 "${num_tests}"); do
+    cat >>"${output_file}" <<EOF
+${bats_test_placeholder} "concurrent stub '${cmd_to_stub} ${test_number}'" {
+  stub ${cmd_to_stub} "${test_number} : echo '${cmd_to_stub} called with arg ${test_number}"
+
+  run ${cmd_to_stub} ${test_number}
+
+  unstub '${cmd_to_stub}'
+}
+
+EOF
+  done
+}
+
+@test "stubs do not interfere with each other when using 'bats --jobs'" {
+  local test_file_to_run="${BATS_TEST_TMPDIR}/concurrent_stub_tests.bats"
+  generate_stubbed_test_file 10 'mycommand' "${test_file_to_run}"
+
+  run bats --jobs 4 "${test_file_to_run}"
+
+  [ "${status}" -eq 0 ]
+  [[ ! "${output}" =~ "unstub 'mycommand'' failed" ]]
+}