添加 mysql redis postgres 插件

plugins/postgres/tests/test_helper.bash

@@ -0,0 +1,86 @@
+#!/usr/bin/env bash
+export DOKKU_LIB_ROOT="/var/lib/dokku"
+source "$(dirname "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)")/config"
+
+flunk() {
+  {
+    if [ "$#" -eq 0 ]; then
+      cat -
+    else
+      echo "$*"
+    fi
+  }
+  return 1
+}
+
+assert_equal() {
+  if [ "$1" != "$2" ]; then
+    {
+      echo "expected: $1"
+      echo "actual:   $2"
+    } | flunk
+  fi
+}
+
+# ShellCheck doesn't know about $status from Bats
+# shellcheck disable=SC2154
+assert_exit_status() {
+  assert_equal "$1" "$status"
+}
+
+# ShellCheck doesn't know about $status from Bats
+# shellcheck disable=SC2154
+# shellcheck disable=SC2120
+assert_success() {
+  if [ "$status" -ne 0 ]; then
+    flunk "command failed with exit status $status"
+  elif [ "$#" -gt 0 ]; then
+    assert_output "$1"
+  fi
+}
+
+assert_failure() {
+  if [[ "$status" -eq 0 ]]; then
+    flunk "expected failed exit status"
+  elif [[ "$#" -gt 0 ]]; then
+    assert_output "$1"
+  fi
+}
+
+assert_exists() {
+  if [ ! -f "$1" ]; then
+    flunk "expected file to exist: $1"
+  fi
+}
+
+assert_contains() {
+  if [[ "$1" != *"$2"* ]]; then
+    flunk "expected $2 to be in: $1"
+  fi
+}
+
+# ShellCheck doesn't know about $output from Bats
+# shellcheck disable=SC2154
+assert_output() {
+  local expected
+  if [ $# -eq 0 ]; then
+    expected="$(cat -)"
+  else
+    expected="$1"
+  fi
+  assert_equal "$expected" "$output"
+}
+
+# ShellCheck doesn't know about $output from Bats
+# shellcheck disable=SC2154
+assert_output_contains() {
+  local input="$output"
+  local expected="$1"
+  local count="${2:-1}"
+  local found=0
+  until [ "${input/$expected/}" = "$input" ]; do
+    input="${input/$expected/}"
+    found=$((found + 1))
+  done
+  assert_equal "$count" "$found"
+}