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+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
+   vim:set ts=2 sw=2 sts=2 et:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+// This file tests the functions of mozIStorageStatementWrapper
+
+function setup() {
+  getOpenedDatabase().createTable(
+    "test",
+    "id INTEGER PRIMARY KEY, val NONE,alt_val NONE"
+  );
+}
+
+/**
+ * A convenience wrapper for do_check_eq.  Calls do_check_eq on aActualVal
+ * and aReturnedVal, with one caveat.
+ *
+ * Date objects are converted before parameter binding to PRTime's (microsecs
+ * since epoch).  They are not reconverted when retrieved from the database.
+ * This function abstracts away this reconversion so that you can pass in,
+ * for example:
+ *
+ *   checkVal(new Date(), aReturnedVal)                    // this
+ *   checkVal(new Date().valueOf() * 1000.0, aReturnedVal) // instead of this
+ *
+ * Should any other types require conversion in the future, their conversions
+ * may also be abstracted away here.
+ *
+ * @param aActualVal
+ *        the value inserted into the database
+ * @param aReturnedVal
+ *        the value retrieved from the database
+ */
+function checkVal(aActualVal, aReturnedVal) {
+  if (aActualVal instanceof Date) {
+    aActualVal = aActualVal.valueOf() * 1000.0;
+  }
+  Assert.equal(aActualVal, aReturnedVal);
+}
+
+/**
+ * Removes all rows from our test table.
+ */
+function clearTable() {
+  var stmt = createStatement("DELETE FROM test");
+  stmt.execute();
+  stmt.finalize();
+  ensureNumRows(0);
+}
+
+/**
+ * Ensures that the number of rows in our test table is equal to aNumRows.
+ * Calls do_check_eq on aNumRows and the value retrieved by SELECT'ing COUNT(*).
+ *
+ * @param aNumRows
+ *        the number of rows our test table should contain
+ */
+function ensureNumRows(aNumRows) {
+  var stmt = createStatement("SELECT COUNT(*) AS number FROM test");
+  Assert.ok(stmt.step());
+  Assert.equal(aNumRows, stmt.row.number);
+  stmt.reset();
+  stmt.finalize();
+}
+
+/**
+ * Inserts aVal into our test table and checks that insertion was successful by
+ * retrieving the newly inserted value from the database and comparing it
+ * against aVal.  aVal is bound to a single parameter.
+ *
+ * @param aVal
+ *        value to insert into our test table and check
+ */
+function insertAndCheckSingleParam(aVal) {
+  clearTable();
+
+  var stmt = createStatement("INSERT INTO test (val) VALUES (:val)");
+  stmt.params.val = aVal;
+  stmt.execute();
+  stmt.finalize();
+
+  ensureNumRows(1);
+
+  stmt = createStatement("SELECT val FROM test WHERE id = 1");
+  Assert.ok(stmt.step());
+  checkVal(aVal, stmt.row.val);
+  stmt.reset();
+  stmt.finalize();
+}
+
+/**
+ * Inserts aVal into our test table and checks that insertion was successful by
+ * retrieving the newly inserted value from the database and comparing it
+ * against aVal.  aVal is bound to two separate parameters, both of which are
+ * checked against aVal.
+ *
+ * @param aVal
+ *        value to insert into our test table and check
+ */
+function insertAndCheckMultipleParams(aVal) {
+  clearTable();
+
+  var stmt = createStatement(
+    "INSERT INTO test (val, alt_val) VALUES (:val, :val)"
+  );
+  stmt.params.val = aVal;
+  stmt.execute();
+  stmt.finalize();
+
+  ensureNumRows(1);
+
+  stmt = createStatement("SELECT val, alt_val FROM test WHERE id = 1");
+  Assert.ok(stmt.step());
+  checkVal(aVal, stmt.row.val);
+  checkVal(aVal, stmt.row.alt_val);
+  stmt.reset();
+  stmt.finalize();
+}
+
+/**
+ * A convenience function that prints out a description of aVal using
+ * aVal.toString and aVal.toSource.  Output is useful when the test fails.
+ *
+ * @param aVal
+ *        a value inserted or to be inserted into our test table
+ */
+function printValDesc(aVal) {
+  try {
+    var toSource = aVal.toSource();
+  } catch (ex) {
+    toSource = "";
+  }
+  print(
+    "Testing value: toString=" +
+      aVal +
+      (toSource ? " toSource=" + toSource : "")
+  );
+}
+
+function run_test() {
+  setup();
+
+  // function JSValStorageStatementBinder in
+  // storage/mozStorageStatementParams.cpp tells us that the following types
+  // and only the following types are valid as statement parameters:
+  var vals = [
+    1337, // int
+    3.1337, // double
+    "foo", // string
+    true, // boolean
+    null, // null
+    new Date(), // Date object
+  ];
+
+  vals.forEach(function (val) {
+    printValDesc(val);
+    print("Single parameter");
+    insertAndCheckSingleParam(val);
+    print("Multiple parameters");
+    insertAndCheckMultipleParams(val);
+  });
+
+  cleanup();
+}