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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,23 +1,28 @@ | ||
| import { SVFilter, SVFilterType } from "./filter"; | ||
| import { SVFilter } from "./filter"; | ||
|
|
||
| describe("SVFilter", () => { | ||
| it("filters the signal", () => { | ||
| const filter = SVFilter(20, SVFilterType.LowPass); | ||
| const filter = SVFilter(20); | ||
| const input = new Float32Array(20); | ||
| const output = new Float32Array(20); | ||
|
|
||
| for (let i = 0; i < input.length; i++) { | ||
| input[i] = i % 2 ? 1 : -1; | ||
| } | ||
| expect(input).toMatchSnapshot(); | ||
| const output = new Float32Array(20); | ||
| filter.fill(input, output, { | ||
| filter.update({ | ||
| filterType: [1], | ||
| frequency: [10], | ||
| resonance: [0.5], | ||
| }); | ||
| filter.fill(input, output); | ||
| expect(output).toMatchSnapshot(); | ||
| filter.fill(input, output, { | ||
| filter.update({ | ||
| filterType: [1], | ||
| frequency: [5], | ||
| resonance: [0.5], | ||
| }); | ||
| filter.fill(input, output); | ||
| expect(output).toMatchSnapshot(); | ||
| }); | ||
| }); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| import { | ||
| createStateVariableFilter, | ||
| registerStateVariableFilterWorkletOnce, | ||
| } from "./index"; | ||
|
|
||
| describe("PolyblepOscillator", () => { | ||
| it("registers only once", () => { | ||
| const context = new AudioContextMock(); | ||
|
|
||
| registerStateVariableFilterWorkletOnce(context.asAudioContext()); | ||
| expect(context.audioWorklet?.addModule).toHaveBeenCalledTimes(1); | ||
| registerStateVariableFilterWorkletOnce(context.asAudioContext()); | ||
| expect(context.audioWorklet?.addModule).toHaveBeenCalledTimes(1); | ||
| }); | ||
|
|
||
| it("creates the worklet node with default parameters", () => { | ||
| // @ts-ignore | ||
| global.AudioWorkletNode = AudioWorkletNodeMock; | ||
| const node = createStateVariableFilter( | ||
| new AudioContextMock().asAudioContext() | ||
| ); | ||
| expect(node.frequency.value).toBe(4000); | ||
| expect(node.filterType.value).toBe(1); | ||
| expect(node.type).toEqual("lowpass"); | ||
| }); | ||
|
|
||
| it("changes the waveform using type property", () => { | ||
| // @ts-ignore | ||
| global.AudioWorkletNode = AudioWorkletNodeMock; | ||
| const node = createStateVariableFilter( | ||
| new AudioContextMock().asAudioContext() | ||
| ); | ||
| expect(node.filterType.value).toBe(1); | ||
| node.type = "highpass"; | ||
| expect(node.filterType.value).toBe(3); | ||
| }); | ||
| }); | ||
|
|
||
| class AudioContextMock { | ||
| audioWorklet?: { addModule: jest.Mock<any, any, any> }; | ||
|
|
||
| constructor(worklets = true) { | ||
| if (worklets) { | ||
| this.audioWorklet = { | ||
| addModule: jest.fn(), | ||
| }; | ||
| } | ||
| } | ||
|
|
||
| asAudioContext(): AudioContext { | ||
| return this as unknown as AudioContext; | ||
| } | ||
| } | ||
|
|
||
| class AudioWorkletNodeMock { | ||
| params: Record<string, ParamMock>; | ||
| parameters: { get(name: string): void }; | ||
| disconnect = jest.fn(); | ||
|
|
||
| constructor( | ||
| public context: any, | ||
| public processorName: any, | ||
| public options: any | ||
| ) { | ||
| this.params = { | ||
| frequency: new ParamMock(), | ||
| resonance: new ParamMock(), | ||
| filterType: new ParamMock(), | ||
| }; | ||
|
|
||
| const get = (name: string): ParamMock => { | ||
| return this.params[name]; | ||
| }; | ||
|
|
||
| this.parameters = { | ||
| get, | ||
| }; | ||
| } | ||
| } | ||
|
|
||
| class ParamMock { | ||
| value = 0; | ||
| values: { value: number; time: number }[] = []; | ||
|
|
||
| setValueAtTime(value: number, time: number) { | ||
| this.values.push({ value, time }); | ||
| if (time === 0) this.value = value; | ||
| } | ||
| } |
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