Migrate to version 2 of nodes.json and start adding tests

server/__mocks__/logger.ts

@@ -0,0 +1,73 @@
+import {Logger, TaggedLogger} from "../types";
+
+type LogLevel = 'debug' | 'info' | 'warn' | 'error' | 'profile';
+
+export type MockLogMessages = any[][];
+type TaggedLogMessages = {
+    tags: {[key: string]: TaggedLogMessages},
+    logs: {[key: string]: MockLogMessages}
+}
+
+export class MockLogger implements Logger {
+    private taggedLogMessages: TaggedLogMessages = MockLogger.emptyTaggedLogMessages();
+
+    constructor() {}
+
+    private static emptyTaggedLogMessages(): TaggedLogMessages {
+        return {
+            tags: {},
+            logs: {}
+        };
+    }
+
+    reset(): void {
+        this.taggedLogMessages = MockLogger.emptyTaggedLogMessages();
+    }
+
+    getMessages(level: LogLevel, ...tags: string[]): MockLogMessages {
+        let taggedLogMessages = this.taggedLogMessages;
+        for (const tag of tags) {
+            if (!taggedLogMessages.tags[tag]) {
+                return [];
+            }
+
+            taggedLogMessages = taggedLogMessages.tags[tag];
+        }
+
+        return taggedLogMessages.logs[level] || [];
+    }
+
+    init(): void {}
+
+    private doLog(taggedLogMessages: TaggedLogMessages, level: LogLevel, tags: string[], args: any[]): void {
+        if (tags.length > 0) {
+            const tag = tags[0];
+            const remainingTags = tags.slice(1);
+            const subTaggedLogsMessages: TaggedLogMessages =
+                taggedLogMessages.tags[tag] || MockLogger.emptyTaggedLogMessages();
+            this.doLog(subTaggedLogsMessages, level, remainingTags, args);
+            taggedLogMessages.tags[tag] = subTaggedLogsMessages;
+
+        } else {
+            const logMessages: MockLogMessages = taggedLogMessages.logs[level] || [];
+            logMessages.push(args);
+            taggedLogMessages.logs[level] = logMessages;
+        }
+    }
+
+    private log(level: LogLevel, tags: string[], args: any[]): void {
+        this.doLog(this.taggedLogMessages, level, tags, args);
+    }
+
+    tag(...tags: string[]): TaggedLogger {
+        return {
+            debug: (...args: any[]): void => this.log('debug', tags, args),
+            info: (...args: any[]): void => this.log('info', tags, args),
+            warn: (...args: any[]): void => this.log('warn', tags, args),
+            error: (...args: any[]): void => this.log('error', tags, args),
+            profile: (...args: any[]): void => this.log('profile', tags, args),
+        }
+    }
+}
+
+export default new MockLogger();