yoastseo-dep/spec/languageProcessing/languages/de/ResearcherSpec.js

Yoast clientside page analysis

import Researcher from "../../../../src/languageProcessing/languages/de/Researcher.js";
import Paper from "../../../../src/values/Paper.js";
import getMorphologyData from "../../../specHelpers/getMorphologyData";
import functionWords from "../../../../src/languageProcessing/languages/de/config/functionWords";
import transitionWords from "../../../../src/languageProcessing/languages/de/config/transitionWords";
import firstWordExceptions from "../../../../src/languageProcessing/languages/de/config/firstWordExceptions";
import twoPartTransitionWords from "../../../../src/languageProcessing/languages/de/config/twoPartTransitionWords";
import stopWords from "../../../../src/languageProcessing/languages/de/config/stopWords";
import syllables from "../../../../src/languageProcessing/languages/de/config/syllables.json";
import checkIfWordIsComplex from "../../../../src/languageProcessing/languages/de/helpers/checkIfWordIsComplex";
import wordComplexityConfig from "../../../../src/languageProcessing/languages/de/config/wordComplexity";
const morphologyDataDE = getMorphologyData( "de" );

describe( "a test for the German Researcher", function() {
	const researcher = new Researcher( new Paper( "" ) );

	it( "returns true if the inherited Abstract Researcher has a specific research", function() {
		expect( researcher.hasResearch( "getParagraphLength" ) ).toBe( true );
	} );

	it( "returns true if the German Researcher has a specific research", function() {
		expect( researcher.hasResearch( "getPassiveVoiceResult" ) ).toBe( true );
	} );

	it( "returns the German function words ", function() {
		expect( researcher.getConfig( "functionWords" ) ).toEqual( functionWords.all );
	} );

	it( "returns the German first word exceptions", function() {
		expect( researcher.getConfig( "firstWordExceptions" ) ).toEqual( firstWordExceptions );
	} );

	it( "returns the German transition words", function() {
		expect( researcher.getConfig( "transitionWords" ) ).toEqual( transitionWords );
	} );

	it( "returns the German two part transition word", function() {
		expect( researcher.getConfig( "twoPartTransitionWords" ) ).toEqual( twoPartTransitionWords );
	} );

	it( "returns the German syllables data", function() {
		expect( researcher.getConfig( "syllables" ) ).toEqual( syllables );
	} );

	it( "returns the German stop words", function() {
		expect( researcher.getConfig( "stopWords" ) ).toEqual( stopWords );
	} );

	it( "returns the German locale", function() {
		expect( researcher.getConfig( "language" ) ).toEqual( "de" );
	} );

	it( "returns the German passive construction type", function() {
		expect( researcher.getConfig( "passiveConstructionType" ) ).toEqual( "periphrastic" );
	} );

	it( "stems a word using the German stemmer", function() {
		researcher.addResearchData( "morphology", morphologyDataDE );
		expect( researcher.getHelper( "getStemmer" )( researcher )( "Katzen" ) ).toEqual( "Katz" );
	} );

	it( "splits German sentence into clauses and return the correct passiveness of the clauses", function() {
		const sentence =  "Die Katze wurde adoptiert, sobald sie gesehen wurde.";
		expect( researcher.getHelper( "getClauses" )( sentence )[ 0 ].getClauseText() ).toBe( "Die Katze wurde adoptiert," );
		expect( researcher.getHelper( "getClauses" )( sentence )[ 0 ].isPassive() ).toBe( true );
		expect( researcher.getHelper( "getClauses" )( sentence )[ 1 ].getClauseText() ).toBe( "sobald sie gesehen wurde." );
		expect( researcher.getHelper( "getClauses" )( sentence )[ 1 ].isPassive() ).toBe( true );
	} );

	it( "calculates the Flesch reading score using the formula for German", function() {
		const testStatistics = {
			numberOfSentences: 10,
			numberOfWords: 50,
			numberOfSyllables: 100,
			averageWordsPerSentence: 5,
			syllablesPer100Words: 200,
		};
		expect( researcher.getHelper( "fleschReadingScore" )( testStatistics ) ).toBe( 58 );
	} );

	it( "checks if a word is complex in German", function() {
		researcher.addHelper( "checkIfWordIsComplex", checkIfWordIsComplex );

		expect( researcher.getHelper( "checkIfWordIsComplex" )( wordComplexityConfig, "optimierungen" ) ).toEqual( true );
		expect( researcher.getHelper( "checkIfWordIsComplex" )( wordComplexityConfig, "boxen" ) ).toEqual( false );
	} );

	it( "checks if a word is a function word in German", function() {
		expect( researcher.getHelper( "checkIfWordIsFunction" )( "verhältnismäßig" ) ).toEqual( true );
		expect( researcher.getHelper( "checkIfWordIsFunction" )( "Verhältnismäßig" ) ).toEqual( true );
		expect( researcher.getHelper( "checkIfWordIsFunction" )( "gebildeten" ) ).toEqual( false );
	} );
} );