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pared down the number of test cases that we need to maintain moving forward

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BrianMulhall
2020-03-20 17:24:03 -05:00
parent 065e3c0b47
commit a67e25a834
1 changed files with 13 additions and 126 deletions
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139
packages/minifier-js/tests/minifier-tests.js
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@@ -1,138 +1,25 @@
// this test case is just for general minification tests that are not specific to any single setting
// this test case verifies that terser can minify code we give it
Tinytest.add('minifier-js - verify simple JS minifications work', (test) => {
let result = meteorJsMinify('function add(first,second){return first + second; }\n');
test.equal(result.code, 'function add(n,d){return n+d}');
test.equal(result.minifier, 'terser');
result = meteorJsMinify('let foo;if (typeof foo == "undefined") { console.log("undefined variable"); }\n');
test.equal(result.code, 'let foo;void 0===foo&&console.log("undefined variable");');
test.equal(result.minifier, 'terser');
result = meteorJsMinify('let z = [1, undefined, 3];\n');
test.equal(result.code, 'let z=[1,void 0,3];');
test.equal(result.minifier, 'terser');
result = meteorJsMinify('function a(z) { let returnValue = z == 10; return returnValue; }\n');
test.equal(result.code, 'function a(n){let t;return 10==n}');
test.equal(result.minifier, 'terser');
result = meteorJsMinify('class Person{ constructor(name, age){ this.name = name; this.age = age; } printName(){console.log(this.name)}}\n');
test.equal(result.code, 'class Person{constructor(s,e){this.name=s,this.age=e}printName(){console.log(this.name)}}');
test.equal(result.minifier, 'terser');
let terserResult = meteorJsMinify('function add(first,second){return first + second; }\n');
test.equal(terserResult.code, 'function add(n,d){return n+d}');
test.equal(terserResult.minifier, 'terser');
});
// Error handling tests
Tinytest.add('minifier-js - errors are handled correctly', (test) => {
test.throws(() => meteorJsMinify('let name = {;\n'));
});
// Unhandled Terser Syntax tests
// this test case verifies that when terser can't handle something, babel-minify will step in as a fallback
Tinytest.add('minifier-js - syntax terser cannot handle is handled correctly by babel-minify', (test) => {
let result = meteorJsMinify('let number = 1_000_000_000_000;\n');
test.equal(result.code, 'let number=1e12;');
test.equal(result.minifier, 'babel-minify');
result = meteorJsMinify('let number = 0.000_000_000_001;\n');
test.equal(result.code, 'let number=1e-12;');
test.equal(result.minifier, 'babel-minify');
let babelResult = meteorJsMinify('let number = 1_000_000_000_000;\n');
test.equal(babelResult.code, 'let number=1e12;');
test.equal(babelResult.minifier, 'babel-minify');
});
// properties -- default(true)
Tinytest.add('minifier-js - verify properties setting', (test) => {
let result = meteorJsMinify('const person = {};person["name"] = "brian";person["age"] = 100; function printName(person){console.log(person["name"])};printName(person);\n');
test.equal(result.code, 'const person={};function printName(n){console.log(n.name)}person.name="brian",person.age=100,printName(person);');
test.equal(result.minifier, 'terser');
// This test case verifies the behavior when both terser and babel-minfiy fail
Tinytest.add('minifier-js - errors are handled correctly', (test) => {
test.throws(() => meteorJsMinify('let name = {;\n'));
});
// evaluate -- default(true)
Tinytest.add('minifier-js - verify evaluate setting', (test) => {
let result = meteorJsMinify('let a = 10 + 20 + 30;\n');
test.equal(result.code, 'let a=60;');
test.equal(result.minifier, 'terser');
});
// this test is an evaluation, but since unsafe is false it won't get evaluated
Tinytest.add('minifier-js - verify that an unsafe evaluation will fail event when evaluate is set to true', (test) => {
let result = meteorJsMinify('var a = [ "foo", "bar", "baz" ].join("");\n');
test.equal(result.code, 'var a=["foo","bar","baz"].join("");');
test.equal(result.minifier, 'terser');
});
// keep_infinity -- default(false)
Tinytest.add('minifier-js - verify keep_infinity setting', (test) => {
let result = meteorJsMinify('let a = Infinity;\n');
test.equal(result.code, 'let a=1/0;');
test.equal(result.minifier, 'terser');
});
// sequences -- default(true)
Tinytest.add('minifier-js - verify sequences setting', (test) => {
let result = meteorJsMinify('var name = "meteor"; var website = "www.meteor.com";var memberCount = 56;\n');
test.equal(result.code, 'var name="meteor",website="www.meteor.com",memberCount=56;');
test.equal(result.minifier, 'terser');
result = meteorJsMinify('let name = "meteor"; let website = "www.meteor.com";let memberCount = 56;\n');
test.equal(result.code, 'let name="meteor",website="www.meteor.com",memberCount=56;');
test.equal(result.minifier, 'terser');
result = meteorJsMinify('const name = "meteor"; const website = "www.meteor.com";const memberCount = 56;\n');
test.equal(result.code, 'const name="meteor",website="www.meteor.com",memberCount=56;');
test.equal(result.minifier, 'terser');
});
// dead_code -- default(true)
Tinytest.add('minifier-js - verify dead_code setting', (test) => {
let result = meteorJsMinify('function f() {a();b();x = 10;return;if (x) {y();}}\n');
test.equal(result.code, 'function f(){a(),b(),x=10}');
test.equal(result.minifier, 'terser');
result = meteorJsMinify('if (false) { console.log("hi"); }\n');
test.equal(result.code, '0;');
test.equal(result.minifier, 'terser');
});
// unsafe_proto -- default(false)
Tinytest.add('minifier-js - verify unsafe_proto setting', (test) => {
let result = meteorJsMinify('Array.prototype.slice.call(a);\n');
test.equal(result.code, 'Array.prototype.slice.call(a);');
test.equal(result.minifier, 'terser');
});
//keep_numbers -- default(false)
Tinytest.add('minifier-js - verify keep_numbers setting', (test) => {
let result = meteorJsMinify('let number = 1000000000;\n');
test.equal(result.code, 'let number=1e9;');
test.equal(result.minifier, 'terser');
result = meteorJsMinify('let number = 0.000000001;\n');
test.equal(result.code, 'let number=1e-9;');
test.equal(result.minifier, 'terser');
});
// unused -- default(true) we set it to false
Tinytest.add('minifier-js - verify unused setting', (test) => {
let result = meteorJsMinify('function foo(){let name = "ron";let firstName = "roger";console.log(firstName)};function bar(){let name = "ron";let firstName = "roger";console.log(firstName)};foo()\n');
test.equal(result.code, 'function foo(){let o="ron",r="roger";console.log("roger")}function bar(){let o="ron",r="roger";console.log("roger")}foo();');
test.equal(result.minifier, 'terser');
});
// drop_debugger -- default(true) we set it to false
Tinytest.add('minifier-js - verify drop_debugger setting', (test) => {
let result = meteorJsMinify('let name = "meteor"; debugger; let age = 100;\n');
test.equal(result.code, 'let name="meteor";debugger;let age=100;');
test.equal(result.minifier, 'terser');
result = meteorJsMinify('let name = "meteor";debugger;let age = 100;function printStatement(name) { console.log("hello QA developers " + name); debugger; };printStatement("brian");\n');
test.equal(result.code, 'let name="meteor";debugger;let age=100;function printStatement(e){console.log("hello QA developers "+e);debugger}printStatement("brian");');
test.equal(result.minifier, 'terser');
});