KaneAI - World’s First E2E Software Testing Agent.Book a Demo Join TestMu Conference

How to use t0 method in wpt

Best JavaScript code snippet using wpt

test.ts

Source:test.ts

1// This is a set of tests for the type-inference algorithm applied to lambda Calculus and the Concatenative calculus.2// Running these tests require installation of the Myna parsing module. 3// TODO: reject recursion and jump out.  4// TODO: check identities5// TODO: from Cat to Lambda-cat (dup/pop/papply/dip)6// TODO: rewriting rules7// TODO: simplify the type presentation (real parseable version)8// TODO: make type presentation look like TypeScript types 9// TODO: make type presentation look like Haskell types10import { parseType } from "./type-parser";11import { parseCat, CatExpr, CatQuotation } from "./cat-parser";12import { catTypes, inferCatType } from "./cat-types";13import { uniquelyNameVars, getVarUsages, removeVars, makeVarsSingleUse } from "./cat-lambda";14import { parseRedex, freeVariables, etaConversion, Redex, lambdaLift } from "./lambda-calculus";15import { abstractionElimination, combinators, combinatorToLambdaCalculus } from "./combinatory-logic";16import { lambdaToPureCat, lambdaToCat } from "./lambda-calculus-to-cat";17import { catStdOps } from "./cat-library";18import { Type, normalizeVarNames, alphabetizeVarNames, isFunctionType, functionInput, TypeArray, TypeVariable, TypeConstant, functionOutput, typeToString } from "./type-system";19//==========================================================================================20// Testing helper functions 21export function runTest<TInput, TOutput>(testName:string, f:(TInput) => TOutput, input: TInput, output: TOutput=undefined, expectFail:boolean = false) {22    try {23        console.log("test " + testName);24        console.log("  input:  " + input.toString());25        const result = f(input);26        console.log("  result: " + result.toString());27        const success = !result || (result && !expectFail || !result && expectFail);28        console.log(success ? "  passed" : "  FAILED"); 29    }   30    catch (e) {31        if (expectFail) {32            console.log("  passed: expected fail, error caught: " + e.message);33        }34        else {35            console.log("  FAILED: error caught = " + e.message);36        }37    }38}39export function catTypeToString(t:Type) : string {40    if (t instanceof TypeVariable) 41        return "'" + t.name;42    else if (t instanceof TypeArray) 43        return "(" + t.types.map(catTypeToString).join(" ") + ")";44    else 45        return t.toString();46}47export function compareTypes(t1:Type, t2:Type) {48    {49        var r1 = normalizeVarNames(t1).toString();50        var r2 = normalizeVarNames(t2).toString();51        if (r1 != r2) {52            throw new Error("Types are not the same when normalized: " + r1 + " and " + r2);53        }54    }55    {56        var r1 = alphabetizeVarNames(t1).toString();57        var r2 = alphabetizeVarNames(t2).toString();58        if (r1 != r2) {59            throw new Error("Types are not the same when alphabetized: " + r1 + " and " + r2);60        }61    } 62}63// Some identities 64// NOTE: the intuitionistic logic part is interesting. 65// https://en.wikipedia.org/wiki/B,_C,_K,_W_system#Connection_to_intuitionistic_logic66export const combinatorDefs = {    67    "B" : "S (K S) K",68    "C" : "S (B B S)(K K)",69    "D" : "B B",70    "E" : "B (B B B)",71    "F" : "E T T E T",72    "G" : "B B C",73    "H" : "B W (B C)",74    "I" : "S K K",75    "J" : "B (B C) (W (B C (B (B B B))))",76    "L" : "C B M",77    "M" : "S I I",78    "O" : "S I",79    "Q" : "C B",80    "R" : "B B T",81    "T" : "C I",82    "U" : "L O",83    "V" : "B C T",84    "W" : "C (B M R)",85    "Y" : "S L L", 86    "S" : "B (B W) (B B C)",87    "I2" : "W K",88    // TODO: test the arithmetic identities 89}90const catTests = [91    // Primitive forms 92    ["", "!t0.(t0 -> t0)"],93   // ["id", "!t0!t1.((t0 t1) -> (t0 t1))"],94    ["apply", "!t1.(!t0.((t0 -> t1) t0) -> t1)"],95    ["compose", "!t1!t2!t3.(!t0.((t0 -> t1) ((t2 -> t0) t3)) -> ((t2 -> t1) t3))"],96    ["quote", "!t0!t1.((t0 t1) -> (!t2.(t2 -> (t0 t2)) t1))"],97    ["dup", "!t0!t1.((t0 t1) -> (t0 (t0 t1)))"],98    ["swap", "!t0!t1!t2.((t0 (t1 t2)) -> (t1 (t0 t2)))"],99    ["pop", "!t1.(!t0.(t0 t1) -> t1)"],100    // Quotations of Primitives 101    ["[]", "!t0.(t0 -> (!t1.(t1 -> t1) t0))"],102    //["[id]", "!t0.(t0 -> (!t1!t2.((t1 t2) -> (t1 t2)) t0))"],103    ["[apply]", "!t0.(t0 -> (!t2.(!t1.((t1 -> t2) t1) -> t2) t0))"],104    ["[pop]", "!t0.(t0 -> (!t2.(!t1.(t1 t2) -> t2) t0))"],105    ["[dup]", "!t0.(t0 -> (!t1!t2.((t1 t2) -> (t1 (t1 t2))) t0))"],106    ["[compose]", "!t0.(t0 -> (!t2!t3!t4.(!t1.((t1 -> t2) ((t3 -> t1) t4)) -> ((t3 -> t2) t4)) t0))"],107    ["[quote]", "!t0.(t0 -> (!t1!t2.((t1 t2) -> (!t3.(t3 -> (t1 t3)) t2)) t0))"],108    ["[swap]", "!t0.(t0 -> (!t1!t2!t3.((t1 (t2 t3)) -> (t2 (t1 t3))) t0))"],109    // Basic composition tests110    ["[[pop]]", "!t0.(t0 -> (!t1.(t1 -> (!t3.(!t2.(t2 t3) -> t3) t1)) t0))"],111    ["[pop pop]", "!t0.(t0 -> (!t3.(!t1.(t1 !t2.(t2 t3)) -> t3) t0))"],112    ["pop []", "!t1.(!t0.(t0 t1) -> (!t2.(t2 -> t2) t1))"], 113    ["[] pop", "!t0.(t0 -> t0)"], 114    ["[pop []]", "!t0.(t0 -> (!t2.(!t1.(t1 t2) -> (!t3.(t3 -> t3) t2)) t0))"],115    ["[] []", "!t0.(t0 -> (!t1.(t1 -> t1) (!t2.(t2 -> t2) t0)))"],116    ["[] dup", "!t0.(t0 -> (!t1.(t1 -> t1) (!t2.(t2 -> t2) t0)))"], 117    ["[] dup dup", "!t0.(t0 -> (!t1.(t1 -> t1) (!t2.(t2 -> t2) (!t3.(t3 -> t3) t0))))"], 118    ["dup pop", "!t0!t1.((t0 t1) -> (t0 t1))"], 119   120    // Compositions of Primitives 121    ["apply apply", "!t2.(!t0.((t0 -> !t1.((t1 -> t2) t1)) t0) -> t2)"],122    ["apply compose", "!t2!t3!t4.(!t0.((t0 -> !t1.((t1 -> t2) ((t3 -> t1) t4))) t0) -> ((t3 -> t2) t4))"],123    ["apply quote", "!t1!t2.(!t0.((t0 -> (t1 t2)) t0) -> (!t3.(t3 -> (t1 t3)) t2))"],124    ["apply dup", "!t1!t2.(!t0.((t0 -> (t1 t2)) t0) -> (t1 (t1 t2)))"],125    ["apply swap", "!t1!t2!t3.(!t0.((t0 -> (t1 (t2 t3))) t0) -> (t2 (t1 t3)))"],126    ["apply pop", "!t2.(!t0.((t0 -> !t1.(t1 t2)) t0) -> t2)"],127    ["compose apply", "!t1.(!t0.((t0 -> t1) !t2.((t2 -> t0) t2)) -> t1)"],128    ["compose compose", "!t1!t3!t4.(!t0.((t0 -> t1) !t2.((t2 -> t0) ((t3 -> t2) t4))) -> ((t3 -> t1) t4))"],129    ["compose quote", "!t1!t2!t3.(!t0.((t0 -> t1) ((t2 -> t0) t3)) -> (!t4.(t4 -> ((t2 -> t1) t4)) t3))"],130    ["compose dup", "!t1!t2!t3.(!t0.((t0 -> t1) ((t2 -> t0) t3)) -> ((t2 -> t1) ((t2 -> t1) t3)))"],131    ["compose swap", "!t1!t2!t3!t4.(!t0.((t0 -> t1) ((t2 -> t0) (t3 t4))) -> (t3 ((t2 -> t1) t4)))"],132    ["compose pop", "!t3.(!t0.(!t1.(t0 -> t1) (!t2.(t2 -> t0) t3)) -> t3)"],133    ["quote apply", "!t0!t1.((t0 t1) -> (t0 t1))"],134    ["quote compose", "!t0!t1!t2!t3.((t0 ((t1 -> t2) t3)) -> ((t1 -> (t0 t2)) t3))"],135    ["quote quote", "!t0!t1.((t0 t1) -> (!t2.(t2 -> (!t3.(t3 -> (t0 t3)) t2)) t1))"],136    ["quote dup", "!t0!t1.((t0 t1) -> (!t2.(t2 -> (t0 t2)) (!t3.(t3 -> (t0 t3)) t1)))"],                       137    ["quote swap", "!t0!t1!t2.((t0 (t1 t2)) -> (t1 (!t3.(t3 -> (t0 t3)) t2)))"],138    ["quote pop", "!t1.(!t0.(t0 t1) -> t1)"],139    ["dup apply", "!t1.(!t0.((((rec 1) t0) -> t1) t0) -> t1)"],140    ["dup compose", "!t0!t1.(((t0 -> t0) t1) -> ((t0 -> t0) t1))"],141    ["dup quote", "!t0!t1.((t0 t1) -> (!t2.(t2 -> (t0 t2)) (t0 t1)))"],142    ["dup dup", "!t0!t1.((t0 t1) -> (t0 (t0 (t0 t1))))"],143    ["dup swap", "!t0!t1.((t0 t1) -> (t0 (t0 t1)))"],144    ["dup pop", "!t0!t1.((t0 t1) -> (t0 t1))"],145    ["swap apply", "!t2.(!t0.(t0 !t1.(((t0 t1) -> t2) t1)) -> t2)"],146    ["swap compose", "!t0!t2!t3.(!t1.((t0 -> t1) ((t1 -> t2) t3)) -> ((t0 -> t2) t3))"],147    ["swap quote", "!t0!t1!t2.((t0 (t1 t2)) -> (!t3.(t3 -> (t1 t3)) (t0 t2)))"],148    ["swap dup", "!t0!t1!t2.((t0 (t1 t2)) -> (t1 (t1 (t0 t2))))"],149    ["swap swap", "!t0!t1!t2.((t0 (t1 t2)) -> (t0 (t1 t2)))"],150    ["swap pop", "!t0!t2.((t0 !t1.(t1 t2)) -> (t0 t2))"],151    ["pop apply", "!t2.(!t0.(t0 !t1.((t1 -> t2) t1)) -> t2)"],152    ["pop compose", "!t2!t3!t4.(!t0.(t0 !t1.((t1 -> t2) ((t3 -> t1) t4))) -> ((t3 -> t2) t4))"],153    ["pop quote", "!t1!t2.(!t0.(t0 (t1 t2)) -> (!t3.(t3 -> (t1 t3)) t2))"],154    ["pop dup", "!t1!t2.(!t0.(t0 (t1 t2)) -> (t1 (t1 t2)))"],155    ["pop swap", "!t1!t2!t3.(!t0.(t0 (t1 (t2 t3))) -> (t2 (t1 t3)))"],156    ["pop pop", "!t2.(!t0.(t0 !t1.(t1 t2)) -> t2)"],157    // Some standard library operators         158    ["swap quote compose apply", "!t1!t2.(!t0.((t0 -> t1) (t2 t0)) -> (t2 t1))"], // Dip159    // Various tests160    ["swap quote compose apply pop", "!t1.(!t0.((t0 -> t1) !t2.(t2 t0)) -> t1)"], // Dip pop == pop apply 161    ["[id] dup 0 swap apply swap [id] swap apply apply", "!t0.(t0 -> (Num t0))"], // Issue reported by StoryYeller162];163function printCatTypes() {164    for (var k in catTypes) {165        var ts = catTypes[k];166        var t = parseType(ts);167        console.log(k);168        console.log(ts);169        console.log(t.toString());170    }171}172function testCatTermsCommon() {173    console.log("Testing Cat expression inference")174    let i = 0;175    for (var xs of catTests) 176        runTest("Cat Inference Test " + i++, 177            (x) => normalizeVarNames(inferCatType(x)).toString(), 178            xs[0], 179            xs[1]);180}181function issue1InCat() {182    var t = inferCatType("");183    t = alphabetizeVarNames(t) as TypeArray;184    console.log(t.toString());185    t = inferCatType("[id] dup [0 swap apply] swap quote compose apply [id] swap apply apply swap apply")186    t = alphabetizeVarNames(t) as TypeArray;187    console.log(t.toString());188}189/*190function testCloning() {191    var types = catTesmap(t => inferCatType(t[0]));192    for (var t of types) {193        try {194            var r1 = ti.freshParameterNames(t, 0);195            var r2 = ti.freshVariableNames(t, 0);196            var r3 = t.clone({});197            compareTypes(t, r1);198            compareTypes(t, r2);199            compareTypes(t, r3);200        }201        catch (e) {202            console.log("FAILED cloning test of " + t + " with message " + e);203        }204    }205}206*/207const lambdaCatTests = [208    "\\a",209    "\\a \\b",210    "\\a \\b @a",211    "\\a \\b @b @a apply",212    "\\a \\b [@a] apply",213    "\\a @a @a",214    "\\a \\b @b @a",215    "\\a \\b @a @a",216    "\\a \\b \\c @c @a @b",217    "\\a \\b \\c @c @b @a",218    "\\a \\b \\c @a @b @c",219    "\\a \\b \\c @a @c @b",220    "\\a \\b \\c @b @a @c",221    "\\a \\b \\c @b @c @a",222];223// SK Combinators expressed in Lambda Cat. 224const lambdaCatCombinators = {225    i       : "\\x @x", 226    k       : "\\x [\\y @x]", 227    s       : "\\x [\\y [\\z @y @z apply @z @x apply apply]]",228    b       : "\\x [\\y [\\z @z @y apply @x apply]]",229    c       : "\\x [\\y [\\z @z @y @x apply apply]]",230    w       : "\\x [\\y [@y @y @x apply apply]]",231    m       : "\\x [@x @x apply]",232    issue   : "[\\x @x] [\\i 0 @i apply [\\x @x] @i apply apply] apply"233}234export const lambdaTests = [    235    ["(\\i.(i \\x.x) (i 0)) \\y.y", "Num"], // This cu\rrently fails: just like it does with HM236    ["(\\i.(i \\x.x) (i 0))", "?"], // This cu\rrently fails: just like it does with HM237    ["(\\i.(i 0)) \\y.y", "?"], // This cu\rrently fails: just like it does with HM238    ["(\\i.(i \\x.x)) \\y.y", "?"], // This cu\rrently fails: just like it does with HM239    ["0", "Num"],240    ["\\x.x", "!a.(a -> a)"],241    ["\\i.0", "!a.(a -> Num)"],242    ["\\i.i 0", "!a.((Num -> a) -> a)"],243    ["(\\i.0)", "!a.(a -> Num)"],244    ["(\\i.i 0)", "!a.((Num -> a) -> a)"],245    ["\\i.i (0)", "!a.((Num -> a) -> a)"],246    ["(\\i.0) \\y.y", "Num"],247    ["(\\i.0) (\\y.y)", "Num"],248    ["(\\i.i) \\y.y", "!a.(a -> a)"],249    ["(\\i.i) (\\y.y)", "!a.(a -> a)"],250    ["(\\i.i) (\\x.x) (\\y.y)","!a.(a -> a)"],251];252function testRedex(x: Redex) 253{254    //var vars = Object.keys(freeVariables(x));255    //console.log("Free variables: " + vars);256    // TODO: proper alpha naming 257    258    // TODO: validate this in isolation 259    //var eta = etaConversion(x);260    //console.log("Eta reduction: " + eta);261    262    // TODO: valdiate this properly 263    //var lift = lambdaLift(x);264    //console.log("Lambda lifting: " + lift);265    // Convert to SKI combinators266    //var elim = abstractionElimination(x);267    //console.log("Abstraction elimination: " + elim);268    // Produces very long terms  269    //var combinator = combinatorToLambdaCalculus(elim);270    //console.log("As combinators: " + combinator);    271}272function testLambdaToCat(s: string) {273    const redex = parseRedex(s);274    const xs = lambdaToPureCat(redex);275    console.log("Lambda expression: " + s);276    console.log("Cat expression: "  + xs.join(' '));277}278function printCatType(s: string) {279    try {280        var t = inferCatType(s);281        console.log("Inferred type: " + t);282    }283    catch (e) {284        console.log("FAILED: " + e.message);285    }286}287function testCombinator(name: string, term: string, exp?: string) {288    try {289        console.log("Testing Lambda term " + name);290        const redex = parseRedex(term);291        console.log("Parsed redex: " + redex);292        testRedex(redex);293        const ys = lambdaToCat(redex);294        console.log("Lambda Cat: " + ys.join(' '));295        const xs = removeVars(ys);296        const cat = xs.join(' '); 297        console.log("Pure Cat: " + cat);298        // TODO: test rewriting 299        // TODO: test converting back  300        const t = inferCatType(cat);301        console.log("Inferred type: " + t);302        console.log("Simplified type: " + typeToString(t));303        if (exp != null)304            console.log("Expected type: " + exp);305    }306    catch (e) {307        console.log("ERROR: " + e.message);308    }309}310function testCombinators() {311    for (var k in combinators) 312        testCombinator(k, combinators[k]);313}314function testLambdaTerms() {315    for (var lt of lambdaTests) 316        testCombinator(lt[0], lt[0], lt[1]);317}318const catTestStrings = [319    "[] dup",320    "[[] dup]",321    "[] [dup]",322    "[] [dup] apply",323    "dup [0] dip apply", // Is recursive. Not surprising. 324    "dup [[0] dip apply []] dip", // what is type?325    "[] dup [[0] dip apply []] dip apply", // Should not fail326    "dup [[0] dip apply []] dip apply", // fails327    "dup [[0] dip apply []] dip apply apply",328    "[dup [[0] dip apply []] dip apply apply]",329    "[dup [[0] dip apply []] dip apply apply] apply",330    "[] [dup [[0] dip apply []] dip apply apply] apply",331    "[[0] dip apply []]",332    "[0] dip apply",333    "[0] dip",334    "[] []",335    "[] [0] dip",336    "[] dup [0] dip",337    "[] dup [0] dip apply",338    "[] dup [[0] dip apply []] dip",339    "[] dup [[0] dip apply []] dip apply",340    "[] dup [[0] dip apply []] dip apply apply",341    "[] [dup [[0] dip apply []] dip apply apply]",342    "[] [0] apply",343    "[] [[0] dip] apply",  344];345function testCatTermsWithVariance() {346    let i=0;347    for (var ct of catTestStrings) {348        runTest("Test Cat Inference with Variance " + i++,349            inferCatType, 350            ct); 351    }352}353testCatTermsCommon();354testCatTermsWithVariance();355testLambdaTerms();356//testCombinators();357//testLambdaTerms();358// A B => A [B] apply 359// A B => [A] apply B 360// A B => A B apply 361//ti.setTrace(true);362// Type of [dup [[0] dip apply []] dip apply apply] apply : !t1.((((Num !t0.((t0 -> t1) t0)) -> !t2.((t2 -> t1) t2)) !t3.((t3 -> t1) t3)) -> t1)363// Type of [] [dup [[0] dip apply []] dip apply apply] : !t0.(t0 -> (!t2.((((Num !t1.((t1 -> t2) t1)) -> !t3.((t3 -> t2) t3)) !t4.((t4 -> t2) t4)) -> t2) (!t5.(t5 -> t5) t0)))364declare var process;...

Interpolant.js

Source:Interpolant.js

1/**2 * Abstract base class of interpolants over parametric samples.3 *4 * The parameter domain is one dimensional, typically the time or a path5 * along a curve defined by the data.6 *7 * The sample values can have any dimensionality and derived classes may8 * apply special interpretations to the data.9 *10 * This class provides the interval seek in a Template Method, deferring11 * the actual interpolation to derived classes.12 *13 * Time complexity is O(1) for linear access crossing at most two points14 * and O(log N) for random access, where N is the number of positions.15 *16 * References:17 *18 * 		http://www.oodesign.com/template-method-pattern.html19 *20 * @author tschw21 */22function Interpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {23	this.parameterPositions = parameterPositions;24	this._cachedIndex = 0;25	this.resultBuffer = resultBuffer !== undefined ?26		resultBuffer : new sampleValues.constructor( sampleSize );27	this.sampleValues = sampleValues;28	this.valueSize = sampleSize;29}30Object.assign( Interpolant.prototype, {31	evaluate: function ( t ) {32		var pp = this.parameterPositions,33			i1 = this._cachedIndex,34			t1 = pp[ i1 ],35			t0 = pp[ i1 - 1 ];36		validate_interval: {37			seek: {38				var right;39				linear_scan: {40					//- See http://jsperf.com/comparison-to-undefined/341					//- slower code:42					//-43					//- 				if ( t >= t1 || t1 === undefined ) {44					forward_scan: if ( ! ( t < t1 ) ) {45						for ( var giveUpAt = i1 + 2; ; ) {46							if ( t1 === undefined ) {47								if ( t < t0 ) break forward_scan;48								// after end49								i1 = pp.length;50								this._cachedIndex = i1;51								return this.afterEnd_( i1 - 1, t, t0 );52							}53							if ( i1 === giveUpAt ) break; // this loop54							t0 = t1;55							t1 = pp[ ++ i1 ];56							if ( t < t1 ) {57								// we have arrived at the sought interval58								break seek;59							}60						}61						// prepare binary search on the right side of the index62						right = pp.length;63						break linear_scan;64					}65					//- slower code:66					//-					if ( t < t0 || t0 === undefined ) {67					if ( ! ( t >= t0 ) ) {68						// looping?69						var t1global = pp[ 1 ];70						if ( t < t1global ) {71							i1 = 2; // + 1, using the scan for the details72							t0 = t1global;73						}74						// linear reverse scan75						for ( var giveUpAt = i1 - 2; ; ) {76							if ( t0 === undefined ) {77								// before start78								this._cachedIndex = 0;79								return this.beforeStart_( 0, t, t1 );80							}81							if ( i1 === giveUpAt ) break; // this loop82							t1 = t0;83							t0 = pp[ -- i1 - 1 ];84							if ( t >= t0 ) {85								// we have arrived at the sought interval86								break seek;87							}88						}89						// prepare binary search on the left side of the index90						right = i1;91						i1 = 0;92						break linear_scan;93					}94					// the interval is valid95					break validate_interval;96				} // linear scan97				// binary search98				while ( i1 < right ) {99					var mid = ( i1 + right ) >>> 1;100					if ( t < pp[ mid ] ) {101						right = mid;102					} else {103						i1 = mid + 1;104					}105				}106				t1 = pp[ i1 ];107				t0 = pp[ i1 - 1 ];108				// check boundary cases, again109				if ( t0 === undefined ) {110					this._cachedIndex = 0;111					return this.beforeStart_( 0, t, t1 );112				}113				if ( t1 === undefined ) {114					i1 = pp.length;115					this._cachedIndex = i1;116					return this.afterEnd_( i1 - 1, t0, t );117				}118			} // seek119			this._cachedIndex = i1;120			this.intervalChanged_( i1, t0, t1 );121		} // validate_interval122		return this.interpolate_( i1, t0, t, t1 );123	},124	settings: null, // optional, subclass-specific settings structure125	// Note: The indirection allows central control of many interpolants.126	// --- Protected interface127	DefaultSettings_: {},128	getSettings_: function () {129		return this.settings || this.DefaultSettings_;130	},131	copySampleValue_: function ( index ) {132		// copies a sample value to the result buffer133		var result = this.resultBuffer,134			values = this.sampleValues,135			stride = this.valueSize,136			offset = index * stride;137		for ( var i = 0; i !== stride; ++ i ) {138			result[ i ] = values[ offset + i ];139		}140		return result;141	},142	// Template methods for derived classes:143	interpolate_: function ( /* i1, t0, t, t1 */ ) {144		throw new Error( 'call to abstract method' );145		// implementations shall return this.resultBuffer146	},147	intervalChanged_: function ( /* i1, t0, t1 */ ) {148		// empty149	}150} );151//!\ DECLARE ALIAS AFTER assign prototype !152Object.assign( Interpolant.prototype, {153	//( 0, t, t0 ), returns this.resultBuffer154	beforeStart_: Interpolant.prototype.copySampleValue_,155	//( N-1, tN-1, t ), returns this.resultBuffer156	afterEnd_: Interpolant.prototype.copySampleValue_,157} );...

CubicInterpolant.js

Source:CubicInterpolant.js

1import { ZeroCurvatureEnding } from '../../constants.js';2import { Interpolant } from '../Interpolant.js';3import { WrapAroundEnding, ZeroSlopeEnding } from '../../constants.js';4/**5 * Fast and simple cubic spline interpolant.6 *7 * It was derived from a Hermitian construction setting the first derivative8 * at each sample position to the linear slope between neighboring positions9 * over their parameter interval.10 *11 * @author tschw12 */13function CubicInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {14	Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );15	this._weightPrev = - 0;16	this._offsetPrev = - 0;17	this._weightNext = - 0;18	this._offsetNext = - 0;19}20CubicInterpolant.prototype = Object.assign( Object.create( Interpolant.prototype ), {21	constructor: CubicInterpolant,22	DefaultSettings_: {23		endingStart: ZeroCurvatureEnding,24		endingEnd: ZeroCurvatureEnding25	},26	intervalChanged_: function ( i1, t0, t1 ) {27		var pp = this.parameterPositions,28			iPrev = i1 - 2,29			iNext = i1 + 1,30			tPrev = pp[ iPrev ],31			tNext = pp[ iNext ];32		if ( tPrev === undefined ) {33			switch ( this.getSettings_().endingStart ) {34				case ZeroSlopeEnding:35					// f'(t0) = 036					iPrev = i1;37					tPrev = 2 * t0 - t1;38					break;39				case WrapAroundEnding:40					// use the other end of the curve41					iPrev = pp.length - 2;42					tPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];43					break;44				default: // ZeroCurvatureEnding45					// f''(t0) = 0 a.k.a. Natural Spline46					iPrev = i1;47					tPrev = t1;48			}49		}50		if ( tNext === undefined ) {51			switch ( this.getSettings_().endingEnd ) {52				case ZeroSlopeEnding:53					// f'(tN) = 054					iNext = i1;55					tNext = 2 * t1 - t0;56					break;57				case WrapAroundEnding:58					// use the other end of the curve59					iNext = 1;60					tNext = t1 + pp[ 1 ] - pp[ 0 ];61					break;62				default: // ZeroCurvatureEnding63					// f''(tN) = 0, a.k.a. Natural Spline64					iNext = i1 - 1;65					tNext = t0;66			}67		}68		var halfDt = ( t1 - t0 ) * 0.5,69			stride = this.valueSize;70		this._weightPrev = halfDt / ( t0 - tPrev );71		this._weightNext = halfDt / ( tNext - t1 );72		this._offsetPrev = iPrev * stride;73		this._offsetNext = iNext * stride;74	},75	interpolate_: function ( i1, t0, t, t1 ) {76		var result = this.resultBuffer,77			values = this.sampleValues,78			stride = this.valueSize,79			o1 = i1 * stride,		o0 = o1 - stride,80			oP = this._offsetPrev, 	oN = this._offsetNext,81			wP = this._weightPrev,	wN = this._weightNext,82			p = ( t - t0 ) / ( t1 - t0 ),83			pp = p * p,84			ppp = pp * p;85		// evaluate polynomials86		var sP = - wP * ppp + 2 * wP * pp - wP * p;87		var s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;88		var s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;89		var sN = wN * ppp - wN * pp;90		// combine data linearly91		for ( var i = 0; i !== stride; ++ i ) {92			result[ i ] =93					sP * values[ oP + i ] +94					s0 * values[ o0 + i ] +95					s1 * values[ o1 + i ] +96					sN * values[ oN + i ];97		}98		return result;99	}100} );...

Using AI Code Generation

1var wpt = require('webpagetest');2var wpt = new WebPageTest('www.webpagetest.org');3    if (err) {4        console.log('Error: ' + err);5    } else {6        console.log('Test Results for ' + data.data.testUrl);7        console.log('First View: ' + data.data.average.firstView.t);8        console.log('Repeat View: ' + data.data.average.repeatView.t);9    }10});

Using AI Code Generation

1var wpt = require('webpagetest');2var wpt = new WebPageTest('www.webpagetest.org');3    if (err) return console.error(err);4    console.log('Test status:', data.statusText);5    console.log('Test ID:', data.data.testId);6});7var wpt = require('webpagetest');8var wpt = new WebPageTest('www.webpagetest.org');9    if (err) return console.error(err);10    console.log('Test status:', data.statusText);11    console.log('Test ID:', data.data.testId);12});13var wpt = require('webpagetest');14var wpt = new WebPageTest('www.webpagetest.org');15    if (err) return console.error(err);16    console.log('Test status:', data.statusText);17    console.log('Test ID:', data.data.testId);18});19var wpt = require('webpagetest');20var wpt = new WebPageTest('www.webpagetest.org');21    if (err) return console.error(err);22    console.log('Test status:', data.statusText);23    console.log('Test ID:', data.data.testId);24});25var wpt = require('webpagetest');26var wpt = new WebPageTest('www.webpagetest.org');27    if (err) return console.error(err

Using AI Code Generation

1var wpt = require('webpagetest');2var test = wpt('www.webpagetest.org');3    if (err) return console.error(err);4    var testId = data.data.testId;5    test.getTestResults(testId, function(err, data) {6        if (err) return console.error(err);7        console.log(data);8    });9});10{11  "scripts": {12  },13  "repository": {

Using AI Code Generation

1var wpt = require('webpagetest');2var api = new wpt('www.webpagetest.org');3  if (err) {4    console.log('Error: ' + err);5  } else {6    console.log('Test status: ' + data.statusCode);7    console.log('Test ID: ' + data.data.testId);8    console.log('Test URL: ' + data.data.summary);9    console.log('Test results: ' + data.data.userUrl);10  }11});12var wpt = require('webpagetest');13var api = new wpt('www.webpagetest.org');14  if (err) {15    console.log('Error: ' + err);16  } else {17    console.log('Test status: ' + data.statusCode);18    console.log('Test ID: ' + data.data.testId);19    console.log('Test URL: ' + data.data.summary);20    console.log('Test results: ' + data.data.userUrl);21  }22});23var wpt = require('webpagetest');24var api = new wpt('www.webpagetest.org');25  if (err) {26    console.log('Error: ' + err);27  } else {28    console.log('Test status: ' + data.statusCode);29    console.log('Test ID: ' + data.data.testId);30    console.log('Test URL: ' + data.data.summary);31    console.log('Test results: ' + data.data.userUrl);32  }33});34var wpt = require('webpagetest');35var api = new wpt('www.webpagetest.org');36  if (err) {37    console.log('Error: ' + err);38  } else {39    console.log('Test status: ' + data.statusCode);40    console.log('Test ID: ' + data.data.testId);41    console.log('Test URL: ' + data.data.summary);

Using AI Code Generation

1var wpt = require('webpagetest');2var wpt = new WebPageTest('www.webpagetest.org');3  if (err) return console.error(err);4  console.log('Test submitted to WebPageTest! Check back here for results: ' + data.data.userUrl);5});6var wpt = require('webpagetest');7var wpt = new WebPageTest('www.webpagetest.org');8  if (err) return console.error(err);9  console.log('Test status: ' + data.statusText);10});11  if (err) return console.error(err);12  console.log('Test results: ' + data.data.average.firstView.loadTime);13});

Using AI Code Generation

1var wpt = require('webpagetest');2var test = new wpt('www.webpagetest.org', 'A.6b8b6b8b8b8b8b8b8b8b8b8b8b8b8b8b');3    if (err) throw err;4    console.log(data);5    test.getTestResults(data.data.testId, function(err, data) {6        if (err) throw err;7        console.log(data);8    });9});10{ statusCode: 403,11  data: { statusCode: 403, statusText: 'Forbidden' } }

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.