From 890e39639acb0f13f9b3fed802bb027e545afb6c Mon Sep 17 00:00:00 2001
From: Birunthan Mohanathas <birunthan@mohanathas.com>
Date: Fri, 29 Aug 2014 13:39:01 -0700
Subject: [PATCH] Bug 1059940 - Part 1: Expose CrashStore.reset() to clear all
 data. r=bsmedberg

---
 toolkit/components/crashes/CrashManager.jsm   | 21 ++++++++++++-------
 .../tests/xpcshell/test_crash_store.js        |  9 ++++++++
 2 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/toolkit/components/crashes/CrashManager.jsm b/toolkit/components/crashes/CrashManager.jsm
index 473325939e2..e5ef4130840 100644
--- a/toolkit/components/crashes/CrashManager.jsm
+++ b/toolkit/components/crashes/CrashManager.jsm
@@ -706,6 +706,18 @@ CrashStore.prototype = Object.freeze({
   // ceiling on the per-type/per-day records that will be stored.
   HIGH_WATER_DAILY_THRESHOLD: 100,
 
+  /**
+   * Reset all data.
+   */
+  reset() {
+    this._data = {
+      v: 1,
+      crashes: new Map(),
+      corruptDate: null,
+    };
+    this._countsByDay = new Map();
+  },
+
   /**
    * Load data from disk.
    *
@@ -713,13 +725,8 @@ CrashStore.prototype = Object.freeze({
    */
   load: function () {
     return Task.spawn(function* () {
-      // Loading replaces data. So reset data structures.
-      this._data = {
-        v: 1,
-        crashes: new Map(),
-        corruptDate: null,
-      };
-      this._countsByDay = new Map();
+      // Loading replaces data.
+      this.reset();
 
       try {
         let decoder = new TextDecoder();
diff --git a/toolkit/components/crashes/tests/xpcshell/test_crash_store.js b/toolkit/components/crashes/tests/xpcshell/test_crash_store.js
index 9f86c2d4579..3ff06f60c3e 100644
--- a/toolkit/components/crashes/tests/xpcshell/test_crash_store.js
+++ b/toolkit/components/crashes/tests/xpcshell/test_crash_store.js
@@ -79,6 +79,15 @@ add_task(function test_add_crash() {
   Assert.equal(s.crashesCount, 2);
 });
 
+add_task(function test_reset() {
+  let s = yield getStore();
+
+  Assert.ok(s.addCrash(PROCESS_TYPE_MAIN, CRASH_TYPE_CRASH, "id1", DUMMY_DATE));
+  Assert.equal(s.crashes.length, 1);
+  s.reset();
+  Assert.equal(s.crashes.length, 0);
+});
+
 add_task(function test_save_load() {
   let s = yield getStore();