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62 lines
1.8 KiB
TypeScript
62 lines
1.8 KiB
TypeScript
import { assertEquals } from "https://deno.land/std@0.176.0/testing/asserts.ts";
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import { byteToStr, wordToStr, DisplayCode, getPixelValue } from './transmit.ts'
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function orig_byteToStr(v: number) {
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return String.fromCharCode((v & 0xF) + 97, ((v >> 4) & 0xF) + 97);
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}
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function orig_wordToStr(v: number) {
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return byteToStr(v & 0xFF) + byteToStr((v >> 8) & 0xFF);
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}
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function orig_displayCode(epdInd = 22) {
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return "EPD" + String.fromCharCode(epdInd + 97) + "_"
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}
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function orig_getVal(p: { data: Uint8ClampedArray }, i: number) {
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if ((p.data[i]==0x00) && (p.data[i+1]==0x00)) return 0
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if ((p.data[i]==0xFF) && (p.data[i+1]==0xFF)) return 1
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if ((p.data[i]==0x7F) && (p.data[i+1]==0x7F)) return 2
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return 3
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}
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Deno.test(function test_byteToStr() {
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const testValues = [0,1,2,23,42,255]
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const results = testValues.map(v => byteToStr(v))
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const expected = testValues.map(v => orig_byteToStr(v))
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assertEquals(results, expected)
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})
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Deno.test(function test_wordToStr() {
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const testValues = [0,1,2,23,42,384]
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const results = testValues.map(v => wordToStr(v))
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const expected = testValues.map(v => orig_wordToStr(v))
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assertEquals(results, expected)
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})
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Deno.test(function test_displayCode() {
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assertEquals(orig_displayCode(), DisplayCode)
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})
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Deno.test(function test_getPixelValue() {
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// 4 pixels: white, black, black, white
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const data = new Uint8ClampedArray([
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255, 255, 255, 255,
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0, 0, 0, 255,
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0, 0, 0, 255,
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255, 255, 255, 255,
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])
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const results = [
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getPixelValue(data, 0 << 2),
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getPixelValue(data, 1 << 2),
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getPixelValue(data, 2 << 2),
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getPixelValue(data, 3 << 2),
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]
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const expected = [
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orig_getVal({ data }, 0 << 2),
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orig_getVal({ data }, 1 << 2),
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orig_getVal({ data }, 2 << 2),
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orig_getVal({ data }, 3 << 2),
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]
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assertEquals(results, expected)
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})
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