All files get-message-bridge-fake.ts

100% Statements 203/203
100% Branches 42/42
100% Functions 11/11
100% Lines 203/203

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 2041x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 21x 21x 21x 42x 42x 42x 42x 42x 23x 23x 19x 42x 12x 12x 12x 9x 9x 12x 12x 42x 7x 7x 42x 21x 84x 84x 84x 84x 84x 47x 28x 28x 47x 47x 47x 47x 47x 47x 2x 2x 47x 84x 84x 1x 1x 1x 1x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 84x 12x 12x 12x 12x 12x 12x 12x 12x 2x 2x 2x 2x 10x 12x 2x 2x 2x 2x 8x 8x 8x 8x 8x 8x 8x 8x 12x 12x 84x 84x 84x 84x 30x 30x 30x 30x 30x 30x 30x 30x 30x 2x 2x 30x 84x 1x 1x 28x 28x 28x 28x 28x 28x 9x 9x 9x 9x 9x 28x 28x 3x 3x 3x 6x 6x 3x 28x 28x 28x 28x 28x 28x 28x 84x 84x 84x 84x 84x 84x 84x 84x 84x 28x 28x 28x 28x 28x 28x 28x 16x 16x 28x 28x  
import type { DiContainer } from "@ogre-tools/injectable";
import type {
  MessageChannel,
  MessageChannelHandler,
  MessageChannelListener,
  RequestChannel,
  RequestChannelHandler,
} from "@k8slens/messaging";
 
import {
  enlistMessageChannelListenerInjectionToken,
  enlistRequestChannelListenerInjectionToken,
  RequestFromChannel,
  requestFromChannelInjectionToken,
  sendMessageToChannelInjectionToken,
} from "@k8slens/messaging";
 
import { pipeline } from "@ogre-tools/fp";
import { filter, map } from "lodash/fp";
import asyncFn, { AsyncFnMock } from "@async-fn/jest";
 
export type MessageBridgeFake = {
  involve: (...dis: DiContainer[]) => void;
  messagePropagation: () => Promise<void>;
  messagePropagationRecursive: (callback: any) => any;
  setAsync: (value: boolean) => void;
};
 
type MessageHandlers = Set<MessageChannelHandler<MessageChannel<any>>>;
 
const overrideMessaging = ({
  di,
  messageListenersByDi,
  messagePropagationBuffer,
  getAsyncModeStatus,
}: {
  di: DiContainer;
 
  messageListenersByDi: Map<DiContainer, Map<string, MessageHandlers>>;
 
  messagePropagationBuffer: Set<{ resolve: () => Promise<void> }>;
 
  getAsyncModeStatus: () => boolean;
}) => {
  const messageHandlersByChannel = new Map<string, MessageHandlers>();
 
  messageListenersByDi.set(di, messageHandlersByChannel);
 
  di.override(sendMessageToChannelInjectionToken, () => (channel, message) => {
    const allOtherDis = [...messageListenersByDi.keys()].filter((x) => x !== di);
 
    allOtherDis.forEach((otherDi) => {
      const listeners = messageListenersByDi.get(otherDi);
 
      const handlersForChannel = listeners?.get(channel.id);
 
      if (!handlersForChannel) {
        return;
      }
 
      if (getAsyncModeStatus()) {
        const resolvableHandlePromise = asyncFn();
 
        resolvableHandlePromise().then(() => {
          handlersForChannel.forEach((handler) => handler(message, { frameId: 42, processId: 42 }));
        });
 
        messagePropagationBuffer.add(resolvableHandlePromise);
      } else {
        handlersForChannel.forEach((handler) => handler(message, { frameId: 42, processId: 42 }));
      }
    });
  });
 
  di.override(
    enlistMessageChannelListenerInjectionToken,
    () =>
      <T>(listener: MessageChannelListener<MessageChannel<T>>) => {
        if (!messageHandlersByChannel.has(listener.channel.id)) {
          messageHandlersByChannel.set(listener.channel.id, new Set());
        }
 
        const handlerSet = messageHandlersByChannel.get(listener.channel.id);
 
        handlerSet?.add(listener.handler);
 
        return () => {
          handlerSet?.delete(listener.handler);
        };
      },
  );
};
 
type RequestHandlers = Set<RequestChannelHandler<RequestChannel<any, any>>>;
 
const overrideRequesting = ({
  di,
  requestListenersByDi,
}: {
  di: DiContainer;
 
  requestListenersByDi: Map<DiContainer, Map<string, RequestHandlers>>;
}) => {
  const requestHandlersByChannel = new Map<string, RequestHandlers>();
 
  requestListenersByDi.set(di, requestHandlersByChannel);
 
  di.override(
    requestFromChannelInjectionToken,
    () =>
      (async (channel, request) =>
        pipeline(
          [...requestListenersByDi.values()],
          map((listenersByChannel) => listenersByChannel?.get(channel.id)),
          filter((x) => !!x),
 
          (channelSpecificListeners) => {
            if (channelSpecificListeners.length === 0) {
              throw new Error(
                `Tried to make a request but no listeners for channel "${channel.id}" was discovered in any DIs`,
              );
            }
 
            if (channelSpecificListeners.length > 1) {
              throw new Error(
                `Tried to make a request but multiple listeners were discovered for channel "${channel.id}" in multiple DIs.`,
              );
            }
 
            const listeners = channelSpecificListeners[0];
 
            // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
            const [handler] = listeners!;
 
            return handler;
          },
 
          async (handler) => handler(request),
        )) as RequestFromChannel,
  );
 
  di.override(enlistRequestChannelListenerInjectionToken, () => (listener) => {
    if (!requestHandlersByChannel.has(listener.channel.id)) {
      requestHandlersByChannel.set(listener.channel.id, new Set());
    }
 
    const handlerSet = requestHandlersByChannel.get(listener.channel.id);
 
    handlerSet?.add(listener.handler);
 
    return () => {
      handlerSet?.delete(listener.handler);
    };
  });
};
 
export const getMessageBridgeFake = (): MessageBridgeFake => {
  const messageListenersByDi = new Map<DiContainer, Map<string, MessageHandlers>>();
  const requestListenersByDi = new Map<DiContainer, Map<string, RequestHandlers>>();
 
  const messagePropagationBuffer = new Set<AsyncFnMock<() => void>>();
 
  const messagePropagation = async (wrapper: (callback: any) => any = (callback) => callback()) => {
    const oldMessages = [...messagePropagationBuffer.values()];
 
    messagePropagationBuffer.clear();
    await Promise.all(oldMessages.map((x) => wrapper(x.resolve)));
  };
 
  const messagePropagationRecursive = async (
    wrapper: (callback: any) => any = (callback) => callback(),
  ) => {
    while (messagePropagationBuffer.size) {
      await messagePropagation(wrapper);
    }
  };
 
  let asyncModeStatus = false;
  const getAsyncModeStatus = () => asyncModeStatus;
 
  return {
    involve: (...dis: DiContainer[]) => {
      dis.forEach((di) => {
        overrideRequesting({ di, requestListenersByDi });
 
        overrideMessaging({
          di,
          messageListenersByDi,
          messagePropagationBuffer,
          getAsyncModeStatus,
        });
      });
    },
 
    messagePropagation,
 
    messagePropagationRecursive,
 
    setAsync: (value) => {
      asyncModeStatus = value;
    },
  };
};