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data-tracking.js
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data-tracking.js
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/**
* This test suite assert correctness of caching query results.
*
* It checks if:
* - gatsby will run all expected queries when running with empty cache
* - gatsby will rerun queries that should be invalidated
* - gatsby will NOT run any unneeded queries (if it reuses cached queries)
* Usual test structure:
* - sanity check that gatsby runs all queries after cache is cleaned
* - changing single node, rerunning queries and asserting only expected queries were run
* - without restarting gatsby process (relying on in-memory cache)
* - with restarting gatsby process (relying on data loaded from persisted cache)
*
* Tests rely on query running adding data dependencies on top level connection and single fields correctly
* (asserting correctness of this is not part of this test suite).
*
* Mocked systems:
* - fs-extra (to not write query results to filesystem)
* - reporter (to not spam output of test runner)
* - api-runner-node (to be able to dynamically adjust `sourceNodes` and `createPage` API hooks)
* - query-runner (it's not really mocked - it still uses real query-runner, this is just cleanest way to add spy to default commonJS export I could find)
*
* Concerns:
* - `setup()` function re-implements subset of gatsby functionality (parts of bootstrap, develop and build commands) to limit time cost of running this test
* - this test might need extra maintenance when gatsby internals are being changed,
* - it might report false positives in unforeseen scenarios after internal changes.
*/
jest.mock(`fs-extra`, () => {
return {
outputFile: jest.fn(),
ensureDir: jest.fn(),
}
})
jest.mock(`gatsby-cli/lib/reporter`, () => {
return {
log: jest.fn(),
info: jest.fn(),
warn: jest.fn(),
error: jest.fn(),
panicOnBuild: console.log,
activityTimer: () => {
return {
start: jest.fn(),
setStatus: jest.fn(),
end: jest.fn(),
}
},
phantomActivity: () => {
return {
start: jest.fn(),
setStatus: jest.fn(),
end: jest.fn(),
}
},
}
})
let mockPersistedState = {}
jest.mock(`../../redux/persist`, () => {
return {
readFromCache: () => mockPersistedState,
writeToCache: state => {
mockPersistedState = state
},
}
})
const pluginOptions = {}
let mockAPIs = {}
const setAPIhooks = hooks => (mockAPIs = { ...mockAPIs, ...hooks })
let pageQueries = {}
const setPageQueries = queries => (pageQueries = queries)
let staticQueries = {}
const setStaticQueries = queries => (staticQueries = queries)
const typedNodeCreator = (
type,
{ createNode, createContentDigest }
) => node => {
node.internal = {
type,
contentDigest: createContentDigest(node),
}
return createNode(node)
}
const getTypedNodeCreators = ({
actions: { createNode },
createContentDigest,
}) => {
return {
createSiteNode: typedNodeCreator(`Site`, {
createNode,
createContentDigest,
}),
createTestNode: typedNodeCreator(`Test`, {
createNode,
createContentDigest,
}),
createTestBNode: typedNodeCreator(`TestB`, {
createNode,
createContentDigest,
}),
createNotUsedNode: typedNodeCreator(`NotUsed`, {
createNode,
createContentDigest,
}),
}
}
let isFirstRun = true
const setup = async ({ restart = isFirstRun, clearCache = false } = {}) => {
isFirstRun = false
if (restart) {
jest.resetModules()
if (clearCache) {
mockPersistedState = {}
}
} else if (clearCache) {
console.error(`Can't clear cache without restarting`)
process.exit(1)
}
jest.doMock(`../query-runner`, () => {
const { queryRunner: actualQueryRunner } = jest.requireActual(
`../query-runner`
)
return {
queryRunner: jest.fn(actualQueryRunner),
}
})
jest.doMock(`../../utils/api-runner-node`, () => apiName => {
if (mockAPIs[apiName]) {
return mockAPIs[apiName](
{
actions: doubleBoundActionCreators,
createContentDigest: require(`gatsby-core-utils`).createContentDigest,
},
pluginOptions
)
}
return undefined
})
const queryUtil = require(`../`)
const { store, emitter } = require(`../../redux`)
const { saveState } = require(`../../db`)
const reporter = require(`gatsby-cli/lib/reporter`)
const { queryRunner } = require(`../query-runner`)
const { boundActionCreators } = require(`../../redux/actions`)
const doubleBoundActionCreators = Object.keys(boundActionCreators).reduce(
(acc, actionName) => {
acc[actionName] = (...args) =>
boundActionCreators[actionName](...args, {
name: `gatsby-source-test`,
version: `1.0.0`,
})
return acc
},
{}
)
const apiRunner = require(`../../utils/api-runner-node`)
queryRunner.mockClear()
store.dispatch({
type: `SET_PROGRAM`,
payload: {
directory: __dirname,
},
})
await require(`../../utils/create-schema-customization`).createSchemaCustomization(
{}
)
await require(`../../utils/source-nodes`).default({})
// trigger page-hot-reloader (if it was setup in previous test)
emitter.emit(`API_RUNNING_QUEUE_EMPTY`)
if (restart) {
await require(`../../schema`).build({})
await apiRunner(`createPages`)
}
Object.entries(pageQueries).forEach(([componentPath, query]) => {
store.dispatch({
type: `QUERY_EXTRACTED`,
payload: {
componentPath,
query,
},
})
})
Object.entries(staticQueries).forEach(([id, query]) => {
// Mimic real code behavior by only calling this action when static query text changes
const lastQuery = mockPersistedState.staticQueryComponents?.get(`sq--${id}`)
if (lastQuery?.query !== query) {
store.dispatch({
type: `REPLACE_STATIC_QUERY`,
payload: {
id: `sq--${id}`,
hash: `sq--${id}`,
query,
},
})
}
})
const queryIds = queryUtil.calcInitialDirtyQueryIds(store.getState())
const { staticQueryIds, pageQueryIds } = queryUtil.groupQueryIds(queryIds)
const activity = reporter.activityTimer(`query running`)
activity.start()
await queryUtil.processStaticQueries(staticQueryIds, {
activity,
state: store.getState(),
})
await queryUtil.processPageQueries(pageQueryIds, { activity })
activity.end()
await saveState()
if (restart) {
require(`../../bootstrap/page-hot-reloader`)
}
const idsOfQueriesThatRan = queryRunner.mock.calls.map(call => call[1].id)
const pathsOfPagesWithQueriesThatRan = idsOfQueriesThatRan
.filter(p => !p.startsWith(`sq--`))
.sort()
const staticQueriesThatRan = idsOfQueriesThatRan
.filter(p => p.startsWith(`sq--`))
.map(p => p.slice(4))
.sort()
return {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages: [...store.getState().pages.keys()].sort(),
}
}
describe(`query caching between builds`, () => {
beforeAll(() => {
setAPIhooks({
createPages: ({ actions: { createPage } }, _pluginOptions) => {
createPage({
component: `/src/templates/listing.js`,
path: `/`,
context: {},
})
createPage({
component: `/src/templates/details.js`,
path: `/foo`,
context: {
slug: `foo`,
},
})
createPage({
component: `/src/templates/details.js`,
path: `/bar`,
context: {
slug: `bar`,
},
})
},
})
setPageQueries({
"/src/templates/listing.js": `
{
allTest {
nodes {
slug
content
}
}
}
`,
"/src/templates/details.js": `
query($slug: String!) {
test(slug: { eq: $slug}) {
slug
content
}
}
`,
})
setStaticQueries({
"static-query-1": `
{
site {
siteMetadata {
title
description
}
}
}
`,
})
})
describe(`Baseline`, () => {
beforeAll(() => {
setAPIhooks({
sourceNodes: (nodeApiContext, _pluginOptions) => {
const { createSiteNode, createTestNode } = getTypedNodeCreators(
nodeApiContext
)
createTestNode({
id: `test-1`,
slug: `foo`,
content: `Lorem ipsum.`,
})
createTestNode({
id: `test-2`,
slug: `bar`,
content: `Dolor sit amet.`,
})
createSiteNode({
id: `Site`,
siteMetadata: {
title: `My Site`,
description: `Description of site`,
},
})
},
})
})
it(`first run - should run all queries`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup()
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// on initial we want all queries to run
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`, `/bar`, `/foo`])
expect(staticQueriesThatRan).toEqual([`static-query-1`])
}, 99999)
it(`rerunning without data changes and without restart shouldn't run any queries`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup()
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// no changes should mean no queries to run
expect(pathsOfPagesWithQueriesThatRan).toEqual([])
expect(staticQueriesThatRan).toEqual([])
}, 99999)
it(`rerunning without data changes after restart shouldn't run any queries`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup({
restart: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// no changes should mean no queries to run
expect(pathsOfPagesWithQueriesThatRan).toEqual([])
expect(staticQueriesThatRan).toEqual([])
}, 99999)
it(`rerunning after cache clearing - should run all queries`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup({
restart: true,
clearCache: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// on initial we want all queries to run
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`, `/bar`, `/foo`])
expect(staticQueriesThatRan).toEqual([`static-query-1`])
}, 99999)
})
describe(`Changed data node used for static query`, () => {
let nodeChangeCounter = 1
beforeEach(() => {
setAPIhooks({
sourceNodes: (nodeApiContext, _pluginOptions) => {
const { createSiteNode, createTestNode } = getTypedNodeCreators(
nodeApiContext
)
createTestNode({
id: `test-1`,
slug: `foo`,
content: `Lorem ipsum.`,
})
createTestNode({
id: `test-2`,
slug: `bar`,
content: `Dolor sit amet.`,
})
createSiteNode({
id: `Site`,
siteMetadata: {
title: `My Site`,
description: `Description of site
--edited
edited content #${nodeChangeCounter++}
`,
},
})
},
})
})
it(`rerunning after cache clearing - should run all queries`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup({
restart: true,
clearCache: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// on initial we want all queries to run
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`, `/bar`, `/foo`])
expect(staticQueriesThatRan).toEqual([`static-query-1`])
}, 99999)
it(`reruns only static query (no restart)`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup()
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// it should not rerun any page query
expect(pathsOfPagesWithQueriesThatRan).toEqual([])
expect(staticQueriesThatRan).toEqual([`static-query-1`])
}, 999999)
it(`reruns only static query (with restart)`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup({
restart: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// it should not rerun any page query
expect(pathsOfPagesWithQueriesThatRan).toEqual([])
expect(staticQueriesThatRan).toEqual([`static-query-1`])
}, 999999)
})
describe(`Changed data node used for pages`, () => {
let nodeChangeCounter = 1
beforeEach(() => {
setAPIhooks({
sourceNodes: (nodeApiContext, _pluginOptions) => {
const { createSiteNode, createTestNode } = getTypedNodeCreators(
nodeApiContext
)
createTestNode({
id: `test-1`,
slug: `foo`,
content: `Lorem ipsum.`,
})
createTestNode({
id: `test-2`,
slug: `bar`,
content: `Dolor sit amet.
--edited
edited content #${nodeChangeCounter++}
`,
})
createSiteNode({
id: `Site`,
siteMetadata: {
title: `My Site`,
description: `Description of site`,
},
})
},
})
})
it(`rerunning after cache clearing - should run all queries`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup({
restart: true,
clearCache: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// on initial we want all queries to run
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`, `/bar`, `/foo`])
expect(staticQueriesThatRan).toEqual([`static-query-1`])
}, 99999)
it(`reruns queries only for listing and detail page that uses that node (no restart)`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup()
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// we changed one node, so connection (`/`) and one detail page (`/bar`) should run
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`, `/bar`])
expect(staticQueriesThatRan).toEqual([])
}, 999999)
it(`reruns queries only for listing and detail page that uses that node (with restart)`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup({
restart: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// we changed one node, so connection (`/`) and one detail page (`/bar`) should run
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`, `/bar`])
expect(staticQueriesThatRan).toEqual([])
}, 999999)
})
describe(`Changed data not used by either page or static queries`, () => {
let nodeChangeCounter = 1
beforeEach(() => {
setAPIhooks({
sourceNodes: (nodeApiContext, _pluginOptions) => {
const {
createSiteNode,
createTestNode,
createNotUsedNode,
} = getTypedNodeCreators(nodeApiContext)
createTestNode({
id: `test-1`,
slug: `foo`,
content: `Lorem ipsum.`,
})
createTestNode({
id: `test-2`,
slug: `bar`,
content: `Dolor sit amet.`,
})
createSiteNode({
id: `Site`,
siteMetadata: {
title: `My Site`,
description: `Description of site`,
},
})
createNotUsedNode({
id: `not-used`,
content: `Content
--edited
edited content #${nodeChangeCounter++}`,
})
},
})
})
it(`rerunning after cache clearing - should run all queries`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup({
restart: true,
clearCache: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// on initial we want all queries to run
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`, `/bar`, `/foo`])
expect(staticQueriesThatRan).toEqual([`static-query-1`])
}, 99999)
it(`changing node not used by anything doesn't trigger running any queries (no restart)`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup()
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// no queries should run
expect(pathsOfPagesWithQueriesThatRan).toEqual([])
expect(staticQueriesThatRan).toEqual([])
}, 999999)
it(`changing node not used by anything doesn't trigger running any queries (with restart)`, async () => {
const {
pathsOfPagesWithQueriesThatRan,
staticQueriesThatRan,
pages,
} = await setup({
restart: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`, `/bar`, `/foo`])
// no queries should run
expect(pathsOfPagesWithQueriesThatRan).toEqual([])
expect(staticQueriesThatRan).toEqual([])
}, 999999)
})
describe(`Changing data used in multiple queries properly invalidates them`, () => {
let nodeChangeCounter = 1
beforeAll(() => {
setAPIhooks({
sourceNodes: (nodeApiContext, _pluginOptions) => {
const { createTestNode, createTestBNode } = getTypedNodeCreators(
nodeApiContext
)
createTestNode({
id: `test-1`,
slug: `foo`,
content: `Lorem ipsum.
--edited
edited content #${nodeChangeCounter++}`,
})
// this node will not change
createTestBNode({
id: `test-b`,
slug: `foo`,
content: `Lorem ipsum.`,
})
},
createPages: () => {},
})
setPageQueries({})
setStaticQueries({
"all-test-query-1": `
{
allTest {
nodes {
slug
}
}
}
`,
"all-test-query-2": `
{
allTest {
nodes {
content
}
}
}
`,
"all-test-b-query-1": `
{
allTestB {
nodes {
slug
}
}
}
`,
"all-test-b-query-2": `
{
allTestB {
nodes {
content
}
}
}
`,
"single-test-1": `
{
test(slug: { eq: "foo"}) {
slug
}
}
`,
"single-test-2": `
{
test(slug: { eq: "foo"}) {
content
}
}
`,
"single-test-b-1": `
{
testB(slug: { eq: "foo"}) {
slug
}
}
`,
"single-test-b-2": `
{
testB(slug: { eq: "foo"}) {
content
}
}
`,
})
})
it(`should run all queries after clearing cache`, async () => {
const { staticQueriesThatRan } = await setup({
restart: true,
clearCache: true,
})
// on initial we want all queries to run
expect(staticQueriesThatRan).toEqual([
`all-test-b-query-1`,
`all-test-b-query-2`,
`all-test-query-1`,
`all-test-query-2`,
`single-test-1`,
`single-test-2`,
`single-test-b-1`,
`single-test-b-2`,
])
}, 99999)
it(`should run only queries that use changed data (no restart)`, async () => {
const { staticQueriesThatRan } = await setup()
expect(staticQueriesThatRan).toEqual([
`all-test-query-1`,
`all-test-query-2`,
`single-test-1`,
`single-test-2`,
])
}, 99999)
it(`should run only queries that use changed data (with restart)`, async () => {
const { staticQueriesThatRan } = await setup({
restart: true,
})
expect(staticQueriesThatRan).toEqual([
`all-test-query-1`,
`all-test-query-2`,
`single-test-1`,
`single-test-2`,
])
}, 99999)
})
describe.skip(`Changing page context invalidates page queries`, () => {
beforeAll(() => {
let pageChangeCounter = 1
let nodeChangeCounter = 1
setAPIhooks({
sourceNodes: (nodeApiContext, _pluginOptions) => {
const { createTestNode, createSiteNode } = getTypedNodeCreators(
nodeApiContext
)
createTestNode({
id: `test-1`,
slug: `foo1`,
content: `Lorem ipsum.`,
})
createTestNode({
id: `test-2`,
slug: `foo2`,
content: `Dolor sit amet.`,
})
createTestNode({
id: `test-3`,
slug: `foo3`,
content: `Consectetur adipiscing elit.`,
})
// this is just to trigger createPages without restarting
createSiteNode({
id: `Site`,
siteMetadata: {
title: `My Site`,
description: `Description of site
--edited
edited content #${nodeChangeCounter++}
`,
},
})
},
createPages: ({ actions: { createPage } }, _pluginOptions) => {
createPage({
component: `/src/templates/details.js`,
path: `/`,
context: {
slug: `foo-${pageChangeCounter}`,
},
})
pageChangeCounter++
},
})
setPageQueries({
"/src/templates/details.js": `
query($slug: String!) {
test(slug: { eq: $slug}) {
slug
content
}
}
`,
})
setStaticQueries({})
})
it(`rerunning after cache clearing - should run all queries`, async () => {
const { pathsOfPagesWithQueriesThatRan, pages } = await setup({
restart: true,
clearCache: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`])
// on initial we want all queries to run
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`])
}, 99999)
it(`changing page context should rerun query (no restart)`, async () => {
const { pathsOfPagesWithQueriesThatRan, pages } = await setup()
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`])
// it should rerun query for page with changed context
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`])
}, 999999)
it(`changing page context should rerun query (with restart)`, async () => {
const { pathsOfPagesWithQueriesThatRan, pages } = await setup({
restart: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`])
// it should rerun query for page with changed context
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`])
}, 999999)
})
/*
We need to make sure we clear data dependency when we (re)run queries to make
sure we don't accumulate stale dependencies over time. Having stale dependencies
wouldn't cause build artificats problems, but it would cause unneeded query running
in some scenarios
*/
describe(`Clears data dependencies when query result is dirty`, () => {
let stage
beforeAll(() => {
setAPIhooks({
sourceNodes: ({ actions: { createNode }, createContentDigest }) => {
const dirtyNodeCreator = typedNodeCreator(`DirtyTest`, {
createNode,
createContentDigest,
})
dirtyNodeCreator({
id: `dirty`,
link___NODE: stage === `initial` ? `linked-dirty` : undefined,
})
dirtyNodeCreator({
id: `linked-dirty`,
stage,
})
// this node is not queried - just to ensure schema contains `link` field
dirtyNodeCreator({
id: `mock`,
link___NODE: `mock`,
})
},
createPages: ({ actions: { createPage } }, _pluginOptions) => {
createPage({
component: `/src/templates/details.js`,
path: `/`,
})
},
})
setPageQueries({
"/src/templates/details.js": `
{
dirtyTest(id: {eq: "dirty"}) {
id
stage
link {
id
stage
}
}
}
`,
})
setStaticQueries({
"dirty-test": `
{
dirtyTest(id: {eq: "dirty"}) {
id
stage
link {
id
stage
}
}
}
`,
})
})
const runDataDependencyClearingOnDirtyTest = ({ withRestarts }) => {
it(`Initial - adds linked node dependency`, async () => {
stage = `initial`
const {
staticQueriesThatRan,
pathsOfPagesWithQueriesThatRan,
pages,
} = await setup({
restart: true,
clearCache: true,
})
// sanity check, to make sure test setup is correct
expect(pages).toEqual([`/`])
// on initial we want all queries to run
expect(staticQueriesThatRan).toEqual([`dirty-test`])
expect(pathsOfPagesWithQueriesThatRan).toEqual([`/`])
}, 999999)
it(`Removes linked data - query should be dirty`, async () => {
stage = `remove-link`
const {
staticQueriesThatRan,