237 lines
8.1 KiB
JavaScript
237 lines
8.1 KiB
JavaScript
/*
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2022-05-22
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The author disclaims copyright to this source code. In place of a
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legal notice, here is a blessing:
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* May you do good and not evil.
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* May you find forgiveness for yourself and forgive others.
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* May you share freely, never taking more than you give.
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***********************************************************************
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This file contains bootstrapping code used by various test scripts
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which live in this file's directory.
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*/
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'use strict';
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(function(self){
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/* querySelectorAll() proxy */
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const EAll = function(/*[element=document,] cssSelector*/){
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return (arguments.length>1 ? arguments[0] : document)
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.querySelectorAll(arguments[arguments.length-1]);
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};
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/* querySelector() proxy */
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const E = function(/*[element=document,] cssSelector*/){
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return (arguments.length>1 ? arguments[0] : document)
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.querySelector(arguments[arguments.length-1]);
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};
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/**
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Helpers for writing sqlite3-specific tests.
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*/
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self.SqliteTestUtil = {
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/** Running total of the number of tests run via
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this API. */
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counter: 0,
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/**
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If expr is a function, it is called and its result
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is returned, coerced to a bool, else expr, coerced to
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a bool, is returned.
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*/
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toBool: function(expr){
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return (expr instanceof Function) ? !!expr() : !!expr;
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},
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/** abort() if expr is false. If expr is a function, it
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is called and its result is evaluated.
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*/
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assert: function f(expr, msg){
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if(!f._){
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f._ = ('undefined'===typeof abort
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? (msg)=>{throw new Error(msg)}
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: abort);
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}
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++this.counter;
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if(!this.toBool(expr)){
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f._(msg || "Assertion failed.");
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}
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return this;
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},
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/** Identical to assert() but throws instead of calling
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abort(). */
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affirm: function(expr, msg){
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++this.counter;
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if(!this.toBool(expr)) throw new Error(msg || "Affirmation failed.");
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return this;
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},
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/** Calls f() and squelches any exception it throws. If it
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does not throw, this function throws. */
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mustThrow: function(f, msg){
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++this.counter;
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let err;
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try{ f(); } catch(e){err=e;}
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if(!err) throw new Error(msg || "Expected exception.");
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return this;
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},
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/**
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Works like mustThrow() but expects filter to be a regex,
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function, or string to match/filter the resulting exception
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against. If f() does not throw, this test fails and an Error is
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thrown. If filter is a regex, the test passes if
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filter.test(error.message) passes. If it's a function, the test
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passes if filter(error) returns truthy. If it's a string, the
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test passes if the filter matches the exception message
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precisely. In all other cases the test fails, throwing an
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Error.
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If it throws, msg is used as the error report unless it's falsy,
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in which case a default is used.
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*/
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mustThrowMatching: function(f, filter, msg){
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++this.counter;
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let err;
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try{ f(); } catch(e){err=e;}
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if(!err) throw new Error(msg || "Expected exception.");
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let pass = false;
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if(filter instanceof RegExp) pass = filter.test(err.message);
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else if(filter instanceof Function) pass = filter(err);
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else if('string' === typeof filter) pass = (err.message === filter);
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if(!pass){
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throw new Error(msg || ("Filter rejected this exception: "+err.message));
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}
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return this;
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},
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/** Throws if expr is truthy or expr is a function and expr()
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returns truthy. */
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throwIf: function(expr, msg){
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++this.counter;
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if(this.toBool(expr)) throw new Error(msg || "throwIf() failed");
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return this;
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},
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/** Throws if expr is falsy or expr is a function and expr()
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returns falsy. */
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throwUnless: function(expr, msg){
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++this.counter;
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if(!this.toBool(expr)) throw new Error(msg || "throwUnless() failed");
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return this;
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},
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/**
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Parses window.location.search-style string into an object
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containing key/value pairs of URL arguments (already
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urldecoded). The object is created using Object.create(null),
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so contains only parsed-out properties and has no prototype
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(and thus no inherited properties).
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If the str argument is not passed (arguments.length==0) then
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window.location.search.substring(1) is used by default. If
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neither str is passed in nor window exists then false is returned.
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On success it returns an Object containing the key/value pairs
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parsed from the string. Keys which have no value are treated
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has having the boolean true value.
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Pedantic licensing note: this code has appeared in other source
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trees, but was originally written by the same person who pasted
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it into those trees.
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*/
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processUrlArgs: function(str) {
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if( 0 === arguments.length ) {
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if( ('undefined' === typeof window) ||
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!window.location ||
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!window.location.search ) return false;
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else str = (''+window.location.search).substring(1);
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}
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if( ! str ) return false;
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str = (''+str).split(/#/,2)[0]; // remove #... to avoid it being added as part of the last value.
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const args = Object.create(null);
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const sp = str.split(/&+/);
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const rx = /^([^=]+)(=(.+))?/;
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var i, m;
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for( i in sp ) {
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m = rx.exec( sp[i] );
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if( ! m ) continue;
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args[decodeURIComponent(m[1])] = (m[3] ? decodeURIComponent(m[3]) : true);
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}
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return args;
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}
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};
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/**
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This is a module object for use with the emscripten-installed
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sqlite3InitModule() factory function.
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*/
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self.sqlite3TestModule = {
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/**
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Array of functions to call after Emscripten has initialized the
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wasm module. Each gets passed the Emscripten module object
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(which is _this_ object).
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*/
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postRun: [
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/* function(theModule){...} */
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],
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//onRuntimeInitialized: function(){},
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/* Proxy for C-side stdout output. */
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print: (...args)=>{console.log(...args)},
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/* Proxy for C-side stderr output. */
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printErr: (...args)=>{console.error(...args)},
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/**
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Called by the Emscripten module init bits to report loading
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progress. It gets passed an empty argument when loading is done
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(after onRuntimeInitialized() and any this.postRun callbacks
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have been run).
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*/
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setStatus: function f(text){
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if(!f.last){
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f.last = { text: '', step: 0 };
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f.ui = {
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status: E('#module-status'),
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progress: E('#module-progress'),
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spinner: E('#module-spinner')
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};
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}
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if(text === f.last.text) return;
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f.last.text = text;
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if(f.ui.progress){
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f.ui.progress.value = f.last.step;
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f.ui.progress.max = f.last.step + 1;
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}
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++f.last.step;
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if(text) {
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f.ui.status.classList.remove('hidden');
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f.ui.status.innerText = text;
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}else{
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if(f.ui.progress){
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f.ui.progress.remove();
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f.ui.spinner.remove();
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delete f.ui.progress;
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delete f.ui.spinner;
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}
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f.ui.status.classList.add('hidden');
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}
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},
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/**
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Config options used by the Emscripten-dependent initialization
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which happens via this.initSqlite3(). This object gets
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(indirectly) passed to sqlite3ApiBootstrap() to configure the
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sqlite3 API.
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*/
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sqlite3ApiConfig: {
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wasmfsOpfsDir: "/opfs"
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},
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/**
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Intended to be called by apps which need to call the
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Emscripten-installed sqlite3InitModule() routine. This function
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temporarily installs this.sqlite3ApiConfig into the self
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object, calls it sqlite3InitModule(), and removes
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self.sqlite3ApiConfig after initialization is done. Returns the
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promise from sqlite3InitModule(), and the next then() handler
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will get the sqlite3 API object as its argument.
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*/
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initSqlite3: function(){
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self.sqlite3ApiConfig = this.sqlite3ApiConfig;
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return self.sqlite3InitModule(this).finally(()=>delete self.sqlite3ApiConfig);
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}
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};
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})(self/*window or worker*/);
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