feat(log): mosaic log CLI surface (#407)

packages/log/src/cli.spec.ts

@@ -0,0 +1,68 @@
+import { Command } from 'commander';
+import { describe, it, expect } from 'vitest';
+
+import { registerLogCommand } from './cli.js';
+
+function buildTestProgram(): Command {
+  const program = new Command('mosaic');
+  program.exitOverride(); // prevent process.exit in tests
+  registerLogCommand(program);
+  return program;
+}
+
+describe('registerLogCommand', () => {
+  it('registers a "log" subcommand on the parent', () => {
+    const program = buildTestProgram();
+    const names = program.commands.map((c) => c.name());
+    expect(names).toContain('log');
+  });
+
+  it('log command has tail, search, export, and level subcommands', () => {
+    const program = buildTestProgram();
+    const logCmd = program.commands.find((c) => c.name() === 'log');
+    expect(logCmd).toBeDefined();
+    const subNames = logCmd!.commands.map((c) => c.name());
+    expect(subNames).toContain('tail');
+    expect(subNames).toContain('search');
+    expect(subNames).toContain('export');
+    expect(subNames).toContain('level');
+  });
+
+  it('tail subcommand has expected options', () => {
+    const program = buildTestProgram();
+    const logCmd = program.commands.find((c) => c.name() === 'log')!;
+    const tailCmd = logCmd.commands.find((c) => c.name() === 'tail')!;
+    const optionNames = tailCmd.options.map((o) => o.long);
+    expect(optionNames).toContain('--agent');
+    expect(optionNames).toContain('--level');
+    expect(optionNames).toContain('--category');
+    expect(optionNames).toContain('--tier');
+    expect(optionNames).toContain('--limit');
+    expect(optionNames).toContain('--db');
+  });
+
+  it('search subcommand accepts a positional query argument', () => {
+    const program = buildTestProgram();
+    const logCmd = program.commands.find((c) => c.name() === 'log')!;
+    const searchCmd = logCmd.commands.find((c) => c.name() === 'search')!;
+    // Commander stores positional args in _args
+    const argNames = searchCmd.registeredArguments.map((a) => a.name());
+    expect(argNames).toContain('query');
+  });
+
+  it('export subcommand accepts a positional path argument', () => {
+    const program = buildTestProgram();
+    const logCmd = program.commands.find((c) => c.name() === 'log')!;
+    const exportCmd = logCmd.commands.find((c) => c.name() === 'export')!;
+    const argNames = exportCmd.registeredArguments.map((a) => a.name());
+    expect(argNames).toContain('path');
+  });
+
+  it('level subcommand accepts a positional level argument', () => {
+    const program = buildTestProgram();
+    const logCmd = program.commands.find((c) => c.name() === 'log')!;
+    const levelCmd = logCmd.commands.find((c) => c.name() === 'level')!;
+    const argNames = levelCmd.registeredArguments.map((a) => a.name());
+    expect(argNames).toContain('level');
+  });
+});