test/java-tests.js

// Copyright (c) 2017, Compiler Explorer Authors
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const chai = require('chai');
const chaiAsPromised = require('chai-as-promised');
const JavaCompiler = require('../lib/compilers/java');
const CompilationEnvironment = require('../lib/compilation-env');
const fs = require('fs-extra');
const utils = require('../lib/utils');
const properties = require('../lib/properties');

chai.use(chaiAsPromised);
chai.should();

const languages = {
    java: {id: 'java'}
};

const info = {
    exe: null,
    remote: true,
    lang: languages.java.id
};
const compilerProps = new properties.CompilerProps(languages, properties.fakeProps({}));
const ce = new CompilationEnvironment(compilerProps);

function testJava(baseFolder, ...classNames) {
    const compiler = new JavaCompiler(info, ce);

    const asm = classNames.map(className => fs.readFileSync(`${baseFolder}/${className}.asm`).toString());

    const output = utils.splitLines(fs.readFileSync(`${baseFolder}/output.asm`).toString());
    const expectedSegments = output.map(line => {
        const match = line.match(/^line (\d+):(.*)$/);
        if (match) {
            return {
                text: match[2],
                source: {
                    line: parseInt(match[1]),
                    file: null,
                }
            };
        }
        return {
            text: line,
            source: null,
        };
    });

    const result = {
        asm
    };

    const processed = compiler.processAsm(result);
    processed.should.deep.equal(expectedSegments)
}



describe("Basic compiler setup", function () {
    it("Should not crash on instantiation", function() {
        new JavaCompiler(info, ce)
    });


    it("should ignore second param for getOutputFilename", function () {
        // Because javac produces a class files based on user provided class names,
        // it's not possible to determine the main class file before compilation/parsing
        const compiler = new JavaCompiler(info, ce);
        if (process.platform === 'win32') {
            compiler.getOutputFilename('/tmp/', 'Ignored.java').should.equal('\\tmp\\example.class');
        } else {
            compiler.getOutputFilename('/tmp/', 'Ignored.java').should.equal('/tmp/example.class');
        }
    });

    describe("Forbidden compiler arguments", function() {
        it("JavaCompiler should not allow -d parameter", () => {
            const compiler = new JavaCompiler(info, ce);
            compiler.filterUserOptions(['hello', '-d', '--something', '--something-else']).should.deep.equal(
                ['hello', '--something-else']
            );
            compiler.filterUserOptions(['hello', '-d']).should.deep.equal(
                ['hello']
            );
            compiler.filterUserOptions(['-d', 'something', 'something-else']).should.deep.equal(
                ['something-else']
            );
        });

        it("JavaCompiler should not allow -s parameter", () => {
            const compiler = new JavaCompiler(info, ce);
            compiler.filterUserOptions(['hello', '-s', '--something', '--something-else']).should.deep.equal(
                ['hello', '--something-else']
            );
            compiler.filterUserOptions(['hello', '-s']).should.deep.equal(
                ['hello']
            );
            compiler.filterUserOptions(['-s', 'something', 'something-else']).should.deep.equal(
                ['something-else']
            );
        });

        it("JavaCompiler should not allow --source-path parameter", () => {
            const compiler = new JavaCompiler(info, ce);
            compiler.filterUserOptions(['hello', '--source-path', '--something', '--something-else']).should.deep.equal(
                ['hello', '--something-else']
            );
            compiler.filterUserOptions(['hello', '--source-path']).should.deep.equal(
                ['hello']
            );
            compiler.filterUserOptions(['--source-path', 'something', 'something-else']).should.deep.equal(
                ['something-else']
            );
        });

        it("JavaCompiler should not allow -sourcepath parameter", () => {
            const compiler = new JavaCompiler(info, ce);
            compiler.filterUserOptions(['hello', '-sourcepath', '--something', '--something-else']).should.deep.equal(
                ['hello', '--something-else']
            );
            compiler.filterUserOptions(['hello', '-sourcepath']).should.deep.equal(
                ['hello']
            );
            compiler.filterUserOptions(['-sourcepath', 'something', 'something-else']).should.deep.equal(
                ['something-else']
            );
        });
    });
});

describe("javap parsing", () => {
    const compiler = new JavaCompiler(info, ce);

    it("should handle errors", () => {
        const result = {
            asm: '<Compilation failed>',
        };

        compiler.processAsm(result).should.deep.equal([
            {text: '<Compilation failed>', source: null}
        ]);
    });

    it("Parses simple class with one method", () => {
        return Promise.all([
            testJava('test/java/square', 'javap-square'),
        ]);
    });

    it("Preserves ordering of multiple classes", () => {
        return Promise.all([
            testJava('test/java/two-classes', 'ZFirstClass', 'ASecondClass'),
            testJava('test/java/two-classes', 'ASecondClass', 'ZFirstClass')
        ]);
    });
});