2a09d1a4
 liuqimichale
添加宜春 天水 宣化
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"use strict";
function consoleLogIsCalledBy(log, methodName) {
it(methodName + " calls console.log", function() {
log.setLevel(log.levels.TRACE);
log[methodName]("Log message for call to " + methodName);
expect(console.log.calls.length).toEqual(1);
});
}
function mockConsole() {
return {"log" : jasmine.createSpy("console.log")};
}
define(['../lib/loglevel'], function(log) {
var originalConsole = window.console;
describe("Fallback functionality:", function() {
describe("with no console present", function() {
beforeEach(function() {
window.console = undefined;
});
afterEach(function() {
window.console = originalConsole;
});
it("silent method calls are allowed", function() {
var result = log.setLevel(log.levels.SILENT);
log.trace("hello");
expect(result).toBeUndefined();
});
it("setting an active level gently returns an error string", function() {
var result = log.setLevel(log.levels.TRACE);
expect(result).toEqual("No console available for logging");
});
it("active method calls are allowed, once the active setLevel fails", function() {
log.setLevel(log.levels.TRACE);
log.trace("hello");
});
describe("if a console later appears", function () {
it("logging is re-enabled and works correctly when next used", function () {
log.setLevel(log.levels.WARN);
window.console = mockConsole();
log.error("error");
expect(window.console.log).toHaveBeenCalled();
});
it("logging is re-enabled but does nothing when used at a blocked level", function () {
log.setLevel(log.levels.WARN);
window.console = mockConsole();
log.trace("trace");
expect(window.console.log).not.toHaveBeenCalled();
});
it("changing level works correctly from that point", function () {
window.console = mockConsole();
var result = log.setLevel(log.levels.WARN);
expect(result).toBeUndefined();
});
});
});
describe("with a console that only supports console.log", function() {
beforeEach(function() {
window.console = mockConsole();
});
afterEach(function() {
window.console = originalConsole;
});
it("log can be set to silent", function() {
log.setLevel(log.levels.SILENT);
});
it("log can be set to an active level", function() {
log.setLevel(log.levels.ERROR);
});
consoleLogIsCalledBy(log, "trace");
consoleLogIsCalledBy(log, "debug");
consoleLogIsCalledBy(log, "info");
consoleLogIsCalledBy(log, "warn");
consoleLogIsCalledBy(log, "trace");
});
});
});
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