yahoo/pngjs-image

// Copyright 2015 Yahoo! Inc.
// Copyrights licensed under the Mit License. See the accompanying LICENSE file for terms.

var testGen = require('../../testGen');
var expect = require('chai').expect;

describe('Text', function () {

    describe('No Textual Data', function () {

        testGen.addDecodeTests({
            resourceGroup: ['ancillary', 'text'],
            resourceFile: 'ct0n0g04',
            imageCheck: true,

            chunkTypes: ['gAMA'],

            headerCheck: true,
            width: 32,
            height: 32,
            bitDepth: 4,
            colorType: 0,
            filter: 0,
            compression: 0,
            interlace: 0
        });

        it('should have no plain text', function () {
            expect(this.data.volatile && this.data.volatile.texts).to.be.undefined;
        });

        it('should have no compressed text', function () {
            expect(this.data.volatile && this.data.volatile.compressedTexts).to.be.undefined;
        });
    });

    describe('With Textual Data', function () {

        testGen.addDecodeTests({
            resourceGroup: ['ancillary', 'text'],
            resourceFile: 'ct1n0g04',
            imageCheck: true,

            chunkTypes: ['gAMA', 'tEXt'],

            headerCheck: true,
            width: 32,
            height: 32,
            bitDepth: 4,
            colorType: 0,
            filter: 0,
            compression: 0,
            interlace: 0
        });

        it('should have plain text', function () {
            expect(this.data.texts).to.be.deep.equal([
                {
                    "content": "PngSuite",
                    "keyword": "Title"
                },
                {
                    "content": "Willem A.J. van Schaik\n(willem@schaik.com)",
                    "keyword": "Author"
                },
                {
                    "content": "Copyright Willem van Schaik, Singapore 1995-96",
                    "keyword": "Copyright"
                },
                {
                    "content": "A compilation of a set of images created to test the\nvarious color-types of the PNG format. Included are\nblack&white, color, paletted, with alpha channel, with\ntransparency formats. All bit-depths allowed according\nto the spec are present.",
                    "keyword": "Description"
                },
                {
                    "content": "Created on a NeXTstation color using \"pnmtopng\".",
                    "keyword": "Software"
                },
                {
                    "content": "Freeware.",
                    "keyword": "Disclaimer"
                }
            ]);
        });

        it('should have no compressed text', function () {
            expect(this.data.compressedTexts).to.be.undefined;
        });
    });

    describe('With Compressed Textual Data', function () {

        testGen.addDecodeTests({
            resourceGroup: ['ancillary', 'text'],
            resourceFile: 'ctzn0g04',
            imageCheck: true,

            chunkTypes: ['gAMA', 'zTXt', 'tEXt'],

            headerCheck: true,
            width: 32,
            height: 32,
            bitDepth: 4,
            colorType: 0,
            filter: 0,
            compression: 0,
            interlace: 0
        });

        it('should have plain text', function () {
            expect(this.data.texts).to.be.deep.equal([
                {
                    "content": "PngSuite",
                    "keyword": "Title"
                },
                {
                    "content": "Willem A.J. van Schaik\n(willem@schaik.com)",
                    "keyword": "Author"
                }
            ]);
        });

        it('should have compressed text', function () {
            expect(this.data.compressedTexts).to.be.deep.equal([
                {
                    "content": "Copyright Willem van Schaik, Singapore 1995-96",
                    "keyword": "Copyright"
                },
                {
                    "content": "A compilation of a set of images created to test the\nvarious color-types of the PNG format. Included are\nblack&white, color, paletted, with alpha channel, with\ntransparency formats. All bit-depths allowed according\nto the spec are present.",
                    "keyword": "Description"
                },
                {
                    "content": "Created on a NeXTstation color using \"pnmtopng\".",
                    "keyword": "Software"
                },
                {
                    "content": "Freeware.",
                    "keyword": "Disclaimer"
                }
            ]);
        });
    });
});