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discriminator.spec.ts
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discriminator.spec.ts
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import type Ajv from ".."
import type AjvPack from "../dist/standalone/instance"
import type AjvCore from "../dist/core"
import type {SchemaObject} from ".."
import _Ajv from "./ajv"
import _Ajv2019 from "./ajv2019"
import getAjvInstances from "./ajv_instances"
import {withStandalone} from "./ajv_standalone"
import options from "./ajv_options"
import * as assert from "assert"
describe("discriminator keyword", function () {
let ajvs: (Ajv | AjvPack)[]
this.timeout(10000)
before(() => {
ajvs = [...getAjvs(_Ajv), ...getAjvs(_Ajv2019)]
})
function getAjvs(AjvClass: typeof AjvCore) {
return withStandalone(getAjvInstances(AjvClass, options, {discriminator: true}))
}
describe("validation", () => {
const schema1 = {
type: "object",
discriminator: {propertyName: "foo"},
oneOf: [
{
properties: {
foo: {const: "x"},
a: {type: "string"},
},
required: ["foo", "a"],
},
{
properties: {
foo: {enum: ["y", "z"]},
b: {type: "string"},
},
required: ["foo", "b"],
},
],
}
const schema2 = {
type: "object",
discriminator: {propertyName: "foo"},
required: ["foo"],
oneOf: [
{
properties: {
foo: {const: "x"},
a: {type: "string"},
},
required: ["a"],
},
{
properties: {
foo: {enum: ["y", "z"]},
b: {type: "string"},
},
required: ["b"],
},
],
}
const schemas = [schema1, schema2]
it("should validate data", () => {
assertValid(schemas, {foo: "x", a: "a"})
assertValid(schemas, {foo: "y", b: "b"})
assertValid(schemas, {foo: "z", b: "b"})
assertInvalid(schemas, {})
assertInvalid(schemas, {foo: 1})
assertInvalid(schemas, {foo: "bar"})
assertInvalid(schemas, {foo: "x", b: "b"})
assertInvalid(schemas, {foo: "y", a: "a"})
assertInvalid(schemas, {foo: "z", a: "a"})
})
})
describe("validation with referenced schemas", () => {
const definitions1 = {
schema1: {
properties: {
foo: {const: "x"},
a: {type: "string"},
},
required: ["foo", "a"],
},
schema2: {
properties: {
foo: {enum: ["y", "z"]},
b: {type: "string"},
},
required: ["foo", "b"],
},
}
const mainSchema1 = {
type: "object",
discriminator: {propertyName: "foo"},
oneOf: [
{
$ref: "#/definitions/schema1",
},
{
$ref: "#/definitions/schema2",
},
],
}
const definitions2 = {
schema1: {
properties: {
foo: {const: "x"},
a: {type: "string"},
},
required: ["a"],
},
schema2: {
properties: {
foo: {enum: ["y", "z"]},
b: {type: "string"},
},
required: ["b"],
},
}
const mainSchema2 = {
type: "object",
discriminator: {propertyName: "foo"},
required: ["foo"],
oneOf: [
{
$ref: "#/definitions/schema1",
},
{
$ref: "#/definitions/schema2",
},
],
}
const schema = [
{definitions: definitions1, ...mainSchema1},
{definitions: definitions2, ...mainSchema2},
]
it("should validate data", () => {
assertValid(schema, {foo: "x", a: "a"})
assertValid(schema, {foo: "y", b: "b"})
assertValid(schema, {foo: "z", b: "b"})
assertInvalid(schema, {})
assertInvalid(schema, {foo: 1})
assertInvalid(schema, {foo: "bar"})
assertInvalid(schema, {foo: "x", b: "b"})
assertInvalid(schema, {foo: "y", a: "a"})
assertInvalid(schema, {foo: "z", a: "a"})
})
})
describe("validation with deeply referenced schemas", () => {
const schema = [
{
type: "object",
properties: {
container: {
$ref: "#/definitions/Container",
},
},
definitions: {
BlockA: {
type: "object",
properties: {
_type: {
type: "string",
enum: ["a"],
},
a: {type: "string"},
},
additionalProperties: false,
required: ["_type"],
title: "BlockA",
},
BlockB: {
type: "object",
properties: {
_type: {
type: "string",
enum: ["b"],
},
b: {type: "string"},
},
additionalProperties: false,
required: ["_type"],
title: "BlockB",
},
Container: {
type: "object",
properties: {
list: {
type: "array",
items: {
oneOf: [
{
$ref: "#/definitions/BlockA",
},
{
$ref: "#/definitions/BlockB",
},
],
discriminator: {
propertyName: "_type",
},
},
},
},
},
},
},
]
it("should validate data", () => {
assertValid(schema, {
container: {
list: [
{_type: "a", a: "foo"},
{_type: "b", b: "bar"},
],
},
})
assertInvalid(schema, {
container: {
list: [
{_type: "a", b: "foo"},
{_type: "b", b: "bar"},
],
},
})
})
})
describe("valid schemas", () => {
it("should have oneOf", () => {
invalidSchema(
{type: "object", discriminator: {propertyName: "foo"}},
/discriminator: requires oneOf/
)
})
it("should have schema for tag", () => {
invalidSchema(
{
type: "object",
discriminator: {propertyName: "foo"},
required: ["foo"],
oneOf: [{properties: {}}],
},
/discriminator: oneOf subschemas \(or referenced schemas\) must have "properties\/foo"/
)
})
it("should have enum or const in schema for tag", () => {
invalidSchema(
{
type: "object",
discriminator: {propertyName: "foo"},
required: ["foo"],
oneOf: [{properties: {foo: {}}}],
},
/discriminator: "properties\/foo" must have "const" or "enum"/
)
})
it("tag value should be string", () => {
invalidSchema(
{
type: "object",
discriminator: {propertyName: "foo"},
required: ["foo"],
oneOf: [{properties: {foo: {const: 1}}}],
},
/discriminator: "foo" values must be unique strings/
)
})
it("tag values should be unique", () => {
invalidSchema(
{
type: "object",
discriminator: {propertyName: "foo"},
required: ["foo"],
oneOf: [{properties: {foo: {const: "a"}}}, {properties: {foo: {const: "a"}}}],
},
/discriminator: "foo" values must be unique strings/
)
})
it("tag should be required", () => {
invalidSchema(
{
type: "object",
discriminator: {propertyName: "foo"},
oneOf: [
{properties: {foo: {const: "a"}}, required: ["foo"]},
{properties: {foo: {const: "b"}}},
],
},
/discriminator: "foo" must be required/
)
})
})
function assertValid(schemas: SchemaObject[], data: unknown): void {
schemas.forEach((schema) =>
ajvs.forEach((ajv) => assert.strictEqual(ajv.validate(schema, data), true))
)
}
function assertInvalid(schemas: SchemaObject[], data: unknown): void {
schemas.forEach((schema) =>
ajvs.forEach((ajv) => assert.strictEqual(ajv.validate(schema, data), false))
)
}
function invalidSchema(schema: SchemaObject, error: any): void {
ajvs.forEach((ajv) => assert.throws(() => ajv.compile(schema), error))
}
})