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gatsby-node.js
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gatsby-node.js
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const Promise = require(`bluebird`)
const os = require(`os`)
const { onCreateNode } = require(`../gatsby-node`)
const createNodeId = jest.fn().mockReturnValue(`uuid-from-gatsby`)
const createContentDigest = jest.fn().mockReturnValue(`contentDigest`)
const loadNodeContent = node => Promise.resolve(node.content)
let createNode
let createParentChildLink
let actions
let node
let createNodeSpec
beforeEach(() => {
createNode = jest.fn()
createParentChildLink = jest.fn()
actions = { createNode, createParentChildLink }
node = {
id: `whatever`,
parent: null,
children: [],
internal: {
contentDigest: `whatever`,
mediaType: `text/yaml`,
},
}
createNodeSpec = {
node,
loadNodeContent,
actions,
createNodeId,
createContentDigest,
}
})
const expectCreatedNodesMatchingSnapshot = count => {
expect(createNode.mock.calls).toMatchSnapshot()
expect(createParentChildLink.mock.calls).toMatchSnapshot()
expect(createNode).toHaveBeenCalledTimes(count)
expect(createParentChildLink).toHaveBeenCalledTimes(count)
}
const expectCreatedNodeTypeName = nodeTypeName => {
expect(createNode).toBeCalledWith(
expect.objectContaining({
internal: expect.objectContaining({
type: nodeTypeName,
}),
})
)
}
describe(`Processing YAML nodes with internal type 'File'`, () => {
beforeEach(() => {
node.internal.type = `File`
node.dir = `${os.tmpdir()}/top/foo bar/`
node.name = `My File`
})
describe(`from a single YAML dictionary,`, () => {
beforeEach(() => {
node.content = `
id: some
blue: true
funny: yup
`
})
it(`when no target type name is specified, the type name is based on the directory name`, async () => {
await onCreateNode(createNodeSpec)
expectCreatedNodesMatchingSnapshot(1)
expectCreatedNodeTypeName(`FooBarYaml`)
})
it(`with the specified target type name`, async () => {
await onCreateNode(createNodeSpec, {
typeName: `fixed`,
})
expectCreatedNodesMatchingSnapshot(1)
expectCreatedNodeTypeName(`fixed`)
})
it(`with the target type name explicitly retrieved from the YAML content`, async () => {
// noinspection JSUnusedLocalSymbols (unused fields left as documentation)
await onCreateNode(createNodeSpec, {
typeName: ({ node, object, isArray }) => object.funny,
})
expectCreatedNodesMatchingSnapshot(1)
expectCreatedNodeTypeName(`yup`)
})
})
describe(`from a YAML array of dictionaries,`, () => {
beforeEach(() => {
node.content = `
- blue: true
funny: yup
- blue: false
funny: nope
`
})
it(`when no target type name is specified, all nodes have a type name based on the file name`, async () => {
await onCreateNode(createNodeSpec)
expectCreatedNodesMatchingSnapshot(2)
expectCreatedNodeTypeName(`MyFileYaml`)
expectCreatedNodeTypeName(`MyFileYaml`)
})
it(`with the specified target type name`, async () => {
await onCreateNode(createNodeSpec, {
typeName: `fixed`,
})
expectCreatedNodesMatchingSnapshot(2)
expectCreatedNodeTypeName(`fixed`)
expectCreatedNodeTypeName(`fixed`)
})
it(`with the target type name explicitly retrieved from the YAML content`, async () => {
// noinspection JSUnusedLocalSymbols (unused fields left as documentation)
await onCreateNode(createNodeSpec, {
typeName: ({ node, object, isArray }) => object.funny,
})
expectCreatedNodesMatchingSnapshot(2)
expectCreatedNodeTypeName(`yup`)
expectCreatedNodeTypeName(`nope`)
})
})
})
describe(`Processing YAML nodes with internal type other than 'File'`, () => {
beforeEach(() => {
node.internal.type = `Other`
})
describe(`from a single YAML dictionary,`, () => {
beforeEach(() => {
node.content = `
id: some
blue: true
funny: yup
`
})
it(`when no target type name is specified, the type name is based on the original node's internal type`, async () => {
await onCreateNode(createNodeSpec)
expectCreatedNodesMatchingSnapshot(1)
expectCreatedNodeTypeName(`OtherYaml`)
})
it(`with the specified target type name`, async () => {
await onCreateNode(createNodeSpec, {
typeName: `fixed`,
})
expectCreatedNodesMatchingSnapshot(1)
expectCreatedNodeTypeName(`fixed`)
})
it(`with the target type name explicitly retrieved from the YAML content`, async () => {
// noinspection JSUnusedLocalSymbols (unused fields left as documentation)
await onCreateNode(createNodeSpec, {
typeName: ({ node, object, isArray }) => object.funny,
})
expectCreatedNodesMatchingSnapshot(1)
expectCreatedNodeTypeName(`yup`)
})
})
describe(`from a YAML array of dictionaries,`, () => {
beforeEach(() => {
node.content = `
- blue: true
funny: yup
- blue: false
funny: nope
`
})
it(`when no target type name is specified, all nodes have a type name based on the original node's internal type`, async () => {
await onCreateNode(createNodeSpec)
expectCreatedNodesMatchingSnapshot(2)
expectCreatedNodeTypeName(`OtherYaml`)
expectCreatedNodeTypeName(`OtherYaml`)
})
it(`with the specified target type name`, async () => {
await onCreateNode(createNodeSpec, {
typeName: `fixed`,
})
expectCreatedNodesMatchingSnapshot(2)
expectCreatedNodeTypeName(`fixed`)
expectCreatedNodeTypeName(`fixed`)
})
it(`with the target type name explicitly retrieved from the YAML content`, async () => {
// noinspection JSUnusedLocalSymbols (unused fields left as documentation)
await onCreateNode(createNodeSpec, {
typeName: ({ node, object, isArray }) => object.funny,
})
expectCreatedNodesMatchingSnapshot(2)
expectCreatedNodeTypeName(`yup`)
expectCreatedNodeTypeName(`nope`)
})
})
})