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chore: add tests for db-stats #99
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,96 @@ | ||
| import { ObjectId } from "bson"; | ||
| import { | ||
| databaseParameters, | ||
| validateToolMetadata, | ||
| validateThrowsForInvalidArguments, | ||
| databaseInvalidArgs, | ||
| getResponseElements, | ||
| } from "../../../helpers.js"; | ||
| import * as crypto from "crypto"; | ||
| import { describeWithMongoDB, validateAutoConnectBehavior } from "../mongodbHelpers.js"; | ||
|
|
||
| describeWithMongoDB("dbStats tool", (integration) => { | ||
| validateToolMetadata( | ||
| integration, | ||
| "db-stats", | ||
| "Returns statistics that reflect the use state of a single database", | ||
| databaseParameters | ||
| ); | ||
|
|
||
| validateThrowsForInvalidArguments(integration, "db-stats", databaseInvalidArgs); | ||
|
|
||
| describe("with non-existent database", () => { | ||
| it("returns an error", async () => { | ||
| await integration.connectMcpClient(); | ||
| const response = await integration.mcpClient().callTool({ | ||
| name: "db-stats", | ||
| arguments: { database: integration.randomDbName() }, | ||
| }); | ||
| const elements = getResponseElements(response.content); | ||
| expect(elements).toHaveLength(2); | ||
| expect(elements[0].text).toBe(`Statistics for database ${integration.randomDbName()}`); | ||
|
|
||
| const stats = JSON.parse(elements[1].text); | ||
| expect(stats.db).toBe(integration.randomDbName()); | ||
| expect(stats.collections).toBe(0); | ||
| expect(stats.storageSize).toBe(0); | ||
| }); | ||
| }); | ||
|
|
||
| describe("with existing database", () => { | ||
| const testCases = [ | ||
| { | ||
| collections: { | ||
| foos: 3, | ||
| }, | ||
| name: "single collection", | ||
| }, | ||
| { | ||
| collections: { | ||
| foos: 2, | ||
| bars: 5, | ||
| }, | ||
| name: "multiple collections", | ||
| }, | ||
| ]; | ||
| for (const test of testCases) { | ||
| it(`returns correct stats for ${test.name}`, async () => { | ||
| for (const [name, count] of Object.entries(test.collections)) { | ||
| const objects = Array(count) | ||
| .fill(0) | ||
| .map(() => { | ||
| return { data: crypto.randomBytes(1024), _id: new ObjectId() }; | ||
| }); | ||
| await integration.mongoClient().db(integration.randomDbName()).collection(name).insertMany(objects); | ||
| } | ||
|
|
||
| await integration.connectMcpClient(); | ||
| const response = await integration.mcpClient().callTool({ | ||
| name: "db-stats", | ||
| arguments: { database: integration.randomDbName() }, | ||
| }); | ||
| const elements = getResponseElements(response.content); | ||
| expect(elements).toHaveLength(2); | ||
| expect(elements[0].text).toBe(`Statistics for database ${integration.randomDbName()}`); | ||
|
|
||
| const stats = JSON.parse(elements[1].text); | ||
| expect(stats.db).toBe(integration.randomDbName()); | ||
| expect(stats.collections).toBe(Object.entries(test.collections).length); | ||
| expect(stats.storageSize).toBeGreaterThan(1024); | ||
| expect(stats.objects).toBe(Object.values(test.collections).reduce((a, b) => a + b, 0)); | ||
| }); | ||
| } | ||
| }); | ||
|
|
||
| describe("when not connected", () => { | ||
| validateAutoConnectBehavior(integration, "db-stats", () => { | ||
| return { | ||
| args: { | ||
| database: integration.randomDbName(), | ||
| collection: "foo", | ||
| }, | ||
| expectedResponse: `Statistics for database ${integration.randomDbName()}`, | ||
| }; | ||
| }); | ||
| }); | ||
| }); |
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🫣