Cleaned up the frame.ts by splitting payload parsing to subpackages
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224
test/payload.extras.test.ts
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224
test/payload.extras.test.ts
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import type { Dissected, Field, Segment } from "@hamradio/packet";
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import { describe, expect, it } from "vitest";
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import { Frame } from "../src/frame";
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import type { PositionPayload } from "../src/frame.types";
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import { feetToMeters, milesToMeters } from "../src/parser";
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import { decodeTelemetry } from "../src/payload.extras";
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describe("APRS extras test vectors", () => {
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it("parses altitude token in the beginning of a comment and emits structure", () => {
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const raw =
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"DL3QP-R>APDG03,TCPIP*,qAC,T2ROMANIA:!5151.12ND00637.65E&/A=000000440 MMDVM Voice 439.40000MHz -7.6000MHz, DL3QP_Pi-Star";
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const frame = Frame.fromString(raw);
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const res = frame.decode(true) as { payload: PositionPayload | null; structure: Dissected };
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const { payload, structure } = res;
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expect(payload).not.toBeNull();
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// Altitude 001234 ft -> meters
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expect(payload!.position.altitude).toBe(0);
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const commentSeg = structure.find((s) => /comment/i.test(String(s.name))) as Segment | undefined;
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expect(commentSeg).toBeDefined();
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const fieldsAlt = (commentSeg!.fields ?? []) as Field[];
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const hasAlt = fieldsAlt.some((f) => f.name === "altitude");
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expect(hasAlt).toBe(true);
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expect(payload!.position.comment).toBe("440 MMDVM Voice 439.40000MHz -7.6000MHz, DL3QP_Pi-Star");
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});
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it("parses altitude token marker mid-comment and emits structure", () => {
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const raw = "N0CALL>APRS,WIDE1-1:!4500.00N/07000.00W#RNG0001ALT/A=001234 Your Comment Here";
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const frame = Frame.fromString(raw);
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const res = frame.decode(true) as { payload: PositionPayload | null; structure: Dissected };
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const { payload, structure } = res;
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// console.log(structure[structure.length - 1]); // Log the last segment for debugging
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expect(payload).not.toBeNull();
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// Altitude 001234 ft -> meters
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expect(Math.round((payload!.position.altitude || 0) / 0.3048)).toBe(1234);
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const commentSeg = structure.find((s) => /comment/i.test(String(s.name))) as Segment | undefined;
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expect(commentSeg).toBeDefined();
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const fieldsAlt = (commentSeg!.fields ?? []) as Field[];
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const hasAlt = fieldsAlt.some((f) => f.name === "altitude");
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expect(hasAlt).toBe(true);
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const commentIndex = (commentSeg!.fields ?? []).findIndex((f) => f.name === "comment");
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expect(commentIndex).toBe(2); // Range marker + range go before.
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const altitudeIndex = (commentSeg!.fields ?? []).findIndex((f) => f.name === "altitude");
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expect(altitudeIndex).toBeGreaterThan(0); // Altitude should come after comment in the structure
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expect(altitudeIndex).toBeGreaterThan(commentIndex);
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const secondCommentIndex = (commentSeg!.fields ?? []).findIndex((f, i) => f.name === "comment" && i > commentIndex);
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expect(secondCommentIndex).toBeGreaterThan(altitudeIndex); // Any additional comment fields should come after altitude
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});
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it("parses PHG from position with messaging (spec vector 1)", () => {
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const raw = "NOCALL>APZRAZ,qAS,PA2RDK-14:=5154.19N/00627.77E>PHG500073 de NOCALL";
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const frame = Frame.fromString(raw);
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const res = frame.decode(true) as { payload: PositionPayload | null; structure: Dissected };
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const { payload } = res;
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expect(payload).not.toBeNull();
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expect(payload!.position.phg).toBeDefined();
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// PHG500073 parsed per spec: p=5 -> 25 W, h='0' -> 10 ft, g='0' -> 0 dBi
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expect(payload!.position.phg!.power).toBe(25);
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expect(payload!.position.phg!.height).toBeCloseTo(3.048, 3);
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expect(payload!.position.phg!.gain).toBe(0);
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expect(payload!.position!.comment).toBe("73 de NOCALL");
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});
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it("parses PHG token with hyphen separators (spec vector 2)", () => {
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const raw = "NOCALL>APRS,TCPIP*,qAC,NINTH:;P-PA3RD *061000z5156.26NP00603.29E#PHG0210DAPNET";
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const frame = Frame.fromString(raw);
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const res = frame.decode(true) as { payload: PositionPayload | null; structure: Dissected };
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const { payload, structure } = res;
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// console.log(structure[structure.length - 1]); // Log the last segment for debugging
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expect(payload).not.toBeNull();
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// Use a spec PHG example: PHG0210 -> p=0 -> power 0 W, h=2 -> 40 ft
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expect(payload!.position.phg).toBeDefined();
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expect(payload!.position.phg!.power).toBe(0);
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expect(payload!.position.phg!.height).toBeCloseTo(12.192, 3);
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const commentSeg = structure.find((s) => /comment/i.test(String(s.name))) as Segment | undefined;
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expect(commentSeg).toBeDefined();
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const fields = (commentSeg!.fields ?? []) as Field[];
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const hasPHG = fields.some((f) => f.name === "PHG marker");
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expect(hasPHG).toBe(true);
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});
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it("parses DFS token with long numeric strength", () => {
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const raw = "N0CALL>APRS,WIDE1-1:!4500.00N/07000.00W#DFS2360/Your Comment";
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const frame = Frame.fromString(raw);
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const res = frame.decode(true) as { payload: PositionPayload | null; structure: Dissected };
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const { payload, structure } = res;
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expect(payload).not.toBeNull();
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expect(payload!.position.dfs).toBeDefined();
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// DFSshgd: strength is single-digit s value (here '2')
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expect(payload!.position.dfs!.strength).toBe(2);
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const commentSeg = structure.find((s) => /comment/i.test(String(s.name))) as Segment | undefined;
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expect(commentSeg).toBeDefined();
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const fieldsDFS = (commentSeg!.fields ?? []) as Field[];
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const hasDFS = fieldsDFS.some((f) => f.name === "DFS marker");
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expect(hasDFS).toBe(true);
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});
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it("parses course/speed in DDD/SSS form and altitude /A=", () => {
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const raw = "N0CALL>APRS,WIDE1-1:!4500.00N/07000.00W>090/045/A=001234";
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const frame = Frame.fromString(raw);
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const res = frame.decode(true) as { payload: PositionPayload | null; structure: Dissected };
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const { payload, structure } = res;
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expect(payload).not.toBeNull();
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expect(payload!.position.course).toBe(90);
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// Speed is converted from knots to km/h
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expect(payload!.position.speed).toBeCloseTo(45 * 1.852, 3);
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// Altitude 001234 ft -> meters
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expect(Math.round((payload!.position.altitude || 0) / 0.3048)).toBe(1234);
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const commentSeg = structure.find((s) => /comment/i.test(String(s.name))) as Segment | undefined;
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expect(commentSeg).toBeDefined();
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const fieldsCSE = (commentSeg!.fields ?? []) as Field[];
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const hasCSE = fieldsCSE.some((f) => f.name === "course");
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expect(hasCSE).toBe(true);
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});
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it("parses combined tokens: DDD/SSS PHG and DFS", () => {
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const raw = "N0CALL>APRS,WIDE1-1:!4500.00N/07000.00W>090/045PHG5132DFS2132";
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const frame = Frame.fromString(raw);
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const res = frame.decode(true) as { payload: PositionPayload | null; structure: Dissected };
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const { payload, structure } = res;
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expect(payload).not.toBeNull();
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expect(payload!.position.course).toBe(90);
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expect(payload!.position.speed).toBeCloseTo(45 * 1.852, 3);
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expect(payload!.position.phg).toBeDefined();
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expect(payload!.position.dfs).toBeDefined();
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expect(payload!.position.dfs!.strength).toBe(2);
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const commentSeg = structure.find((s) => /comment/i.test(String(s.name))) as Segment | undefined;
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expect(commentSeg).toBeDefined();
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const fieldsCombined = (commentSeg!.fields ?? []) as Field[];
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expect(fieldsCombined.some((f) => ["course", "PHG marker", "DFS marker"].includes(String(f.name)))).toBe(true);
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});
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it("parses RNG token and emits structure", () => {
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const raw =
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"N0CALL-S>APDG01,TCPIP*,qAC,N0CALL-GS:;N0CALL B *181721z5148.38ND00634.32EaRNG0001/A=000010 70cm Voice (D-Star) 439.50000MHz -7.6000MHz";
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const frame = Frame.fromString(raw);
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const res = frame.decode(true) as { payload: PositionPayload | null; structure: Dissected };
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const { payload, structure } = res;
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expect(payload).not.toBeNull();
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expect(payload!.position.altitude).toBeCloseTo(feetToMeters(10), 3);
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expect(payload!.position.range).toBe(milesToMeters(1) / 1000);
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const commentSeg = structure.find((s) => /comment/i.test(String(s.name))) as Segment | undefined;
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expect(commentSeg).toBeDefined();
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const fieldsRNG = (commentSeg!.fields ?? []) as Field[];
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const hasRNG = fieldsRNG.some((f) => f.name === "range marker");
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expect(hasRNG).toBe(true);
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const rangeIndex = (commentSeg!.fields ?? []).findIndex((f) => f.name === "range marker");
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expect(rangeIndex).toBeGreaterThanOrEqual(0);
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const altitudeIndex = (commentSeg!.fields ?? []).findIndex((f) => f.name === "altitude");
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expect(altitudeIndex).toBeGreaterThanOrEqual(0);
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expect(rangeIndex).toBeGreaterThanOrEqual(0);
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expect(altitudeIndex).toBeGreaterThan(rangeIndex); // Altitude comes after range
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const commentIndex = (commentSeg!.fields ?? []).findIndex((f) => f.name === "comment");
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expect(commentIndex).toBeGreaterThan(altitudeIndex); // Comment comes after altitude
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});
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});
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describe("decodeTelemetry", () => {
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it("decodes minimal telemetry (|!!!!|)", () => {
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const result = decodeTelemetry("!!!!");
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expect(result.sequence).toBe(0);
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expect(result.analog).toEqual([0]);
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expect(result.digital).toBeUndefined();
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});
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it("decodes sequence and one channel", () => {
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const result = decodeTelemetry("ss11");
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expect(result.sequence).toBe(7544);
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expect(result.analog).toEqual([1472]);
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expect(result.digital).toBeUndefined();
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});
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it("decodes sequence and two channels", () => {
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const result = decodeTelemetry("ss1122");
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expect(result.sequence).toBe(7544);
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expect(result.analog).toEqual([1472, 1564]);
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expect(result.digital).toBeUndefined();
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});
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it("decodes sequence and five channels", () => {
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const result = decodeTelemetry("ss1122334455");
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expect(result.sequence).toBe(7544);
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expect(result.analog).toEqual([1472, 1564, 1656, 1748, 1840]);
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expect(result.digital).toBeUndefined();
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});
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it("decodes sequence, five channels, and digital", () => {
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const result = decodeTelemetry('ss1122334455!"');
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expect(result.sequence).toBe(7544);
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expect(result.analog).toEqual([1472, 1564, 1656, 1748, 1840]);
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expect(result.digital).toBe(1);
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});
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it("throws on too short input", () => {
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expect(() => decodeTelemetry("!")).toThrow();
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expect(() => decodeTelemetry("")).toThrow();
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});
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it("throws on invalid base91", () => {
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expect(() => decodeTelemetry("ss11~~")).toThrow();
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});
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});
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