1 files changed, 122 insertions, 0 deletions
diff --git a/services/sync/tps/extensions/tps/resource/modules/prefs.sys.mjs b/services/sync/tps/extensions/tps/resource/modules/prefs.sys.mjs
new file mode 100644
index 0000000000..9f6c423a40
--- /dev/null
+++ b/services/sync/tps/extensions/tps/resource/modules/prefs.sys.mjs
@@ -0,0 +1,122 @@
+/* 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 is a JavaScript module (JSM) to be imported via
+   ChromeUtils.import() and acts as a singleton.
+   Only the following listed symbols will exposed on import, and only when
+   and where imported. */
+
+const WEAVE_PREF_PREFIX = "services.sync.prefs.sync.";
+
+import { Logger } from "resource://tps/logger.sys.mjs";
+
+/**
+ * Preference class constructor
+ *
+ * Initializes instance properties.
+ */
+export function Preference(props) {
+  Logger.AssertTrue(
+    "name" in props && "value" in props,
+    "Preference must have both name and value"
+  );
+
+  this.name = props.name;
+  this.value = props.value;
+}
+
+/**
+ * Preference instance methods
+ */
+Preference.prototype = {
+  /**
+   * Modify
+   *
+   * Sets the value of the preference this.name to this.value.
+   * Throws on error.
+   *
+   * @return nothing
+   */
+  Modify() {
+    // Determine if this pref is actually something Weave even looks at.
+    let weavepref = WEAVE_PREF_PREFIX + this.name;
+    try {
+      let syncPref = Services.prefs.getBoolPref(weavepref);
+      if (!syncPref) {
+        Services.prefs.setBoolPref(weavepref, true);
+      }
+    } catch (e) {
+      Logger.AssertTrue(false, "Weave doesn't sync pref " + this.name);
+    }
+
+    // Modify the pref; throw an exception if the pref type is different
+    // than the value type specified in the test.
+    let prefType = Services.prefs.getPrefType(this.name);
+    switch (prefType) {
+      case Ci.nsIPrefBranch.PREF_INT:
+        Logger.AssertEqual(
+          typeof this.value,
+          "number",
+          "Wrong type used for preference value"
+        );
+        Services.prefs.setIntPref(this.name, this.value);
+        break;
+      case Ci.nsIPrefBranch.PREF_STRING:
+        Logger.AssertEqual(
+          typeof this.value,
+          "string",
+          "Wrong type used for preference value"
+        );
+        Services.prefs.setCharPref(this.name, this.value);
+        break;
+      case Ci.nsIPrefBranch.PREF_BOOL:
+        Logger.AssertEqual(
+          typeof this.value,
+          "boolean",
+          "Wrong type used for preference value"
+        );
+        Services.prefs.setBoolPref(this.name, this.value);
+        break;
+    }
+  },
+
+  /**
+   * Find
+   *
+   * Verifies that the preference this.name has the value
+   * this.value. Throws on error, or if the pref's type or value
+   * doesn't match.
+   *
+   * @return nothing
+   */
+  Find() {
+    // Read the pref value.
+    let value;
+    try {
+      let prefType = Services.prefs.getPrefType(this.name);
+      switch (prefType) {
+        case Ci.nsIPrefBranch.PREF_INT:
+          value = Services.prefs.getIntPref(this.name);
+          break;
+        case Ci.nsIPrefBranch.PREF_STRING:
+          value = Services.prefs.getCharPref(this.name);
+          break;
+        case Ci.nsIPrefBranch.PREF_BOOL:
+          value = Services.prefs.getBoolPref(this.name);
+          break;
+      }
+    } catch (e) {
+      Logger.AssertTrue(false, "Error accessing pref " + this.name);
+    }
+
+    // Throw an exception if the current and expected values aren't of
+    // the same type, or don't have the same values.
+    Logger.AssertEqual(
+      typeof value,
+      typeof this.value,
+      "Value types don't match"
+    );
+    Logger.AssertEqual(value, this.value, "Preference values don't match");
+  },
+};