michael@0: function check_clear_visible(tab, aVisible) {
michael@0:   let doc = gBrowser.getBrowserForTab(tab).contentDocument;
michael@0:   let visible = false;
michael@0:   let button = doc.getElementById("clear-reports");
michael@0:   if (button) {
michael@0:     let style = doc.defaultView.getComputedStyle(button, "");
michael@0:     if (style.display != "none" &&
michael@0:         style.visibility == "visible")
michael@0:       visible = true;
michael@0:   }
michael@0:   is(visible, aVisible,
michael@0:      "clear reports button is " + (aVisible ? "visible" : "hidden"));
michael@0: }
michael@0: 
michael@0: // each test here has a setup (run before loading about:crashes) and onload (run after about:crashes loads)
michael@0: let _tests = [{setup: null, onload: function(tab) { check_clear_visible(tab, false); }},
michael@0:               {setup: function(crD) { add_fake_crashes(crD, 1); },
michael@0:                onload: function(tab) { check_clear_visible(tab, true); }}
michael@0:               ];
michael@0: let _current_test = 0;
michael@0: 
michael@0: function run_test_setup(crD) {
michael@0:   if (_tests[_current_test].setup) {
michael@0:     _tests[_current_test].setup(crD);
michael@0:   }
michael@0: }
michael@0: 
michael@0: function run_test_onload(tab) {
michael@0:   if (_tests[_current_test].onload) {
michael@0:     _tests[_current_test].onload(tab);
michael@0:   }
michael@0:   _current_test++;
michael@0: 
michael@0:   if (_current_test == _tests.length) {
michael@0:     cleanup_fake_appdir();
michael@0:     gBrowser.removeTab(tab);
michael@0:     finish();
michael@0:     return false;
michael@0:   }
michael@0:   return true;
michael@0: }
michael@0: 
michael@0: function test() {
michael@0:   waitForExplicitFinish();
michael@0:   let appD = make_fake_appdir();
michael@0:   let crD = appD.clone();
michael@0:   crD.append("Crash Reports");
michael@0: 
michael@0:   let tab = gBrowser.selectedTab = gBrowser.addTab("about:blank");
michael@0:   let browser = gBrowser.getBrowserForTab(tab);
michael@0:   let onLoad = function () {
michael@0:     executeSoon(function() {
michael@0:       if (run_test_onload(tab)) {
michael@0:         // prep and run the next test
michael@0:         run_test_setup(crD);
michael@0:         executeSoon(function() { browser.loadURI("about:crashes", null, null); });
michael@0:       }
michael@0:     });
michael@0:   };
michael@0:   browser.addEventListener("load", onLoad, true);
michael@0:   registerCleanupFunction(function () {
michael@0:     browser.removeEventListener("load", onLoad, true);
michael@0:   });
michael@0:   // kick things off
michael@0:   run_test_setup(crD);
michael@0:   browser.loadURI("about:crashes", null, null);
michael@0: }