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Original file line number Diff line number Diff line change
@@ -0,0 +1,180 @@
import testRule from './__helpers__/testRule';
import { DiagnosticSeverity } from '@stoplight/types';

testRule('xgen-IPA-112-boolean-field-names-avoid-is-prefix', [
{
name: 'valid schema - no "is" prefix in boolean fields',
document: {
components: {
schemas: {
SchemaName: {
properties: {
enabled: { type: 'boolean' },
active: { type: 'boolean' },
disabled: { type: 'boolean' },
isString: { type: 'string' },
visible: { type: 'boolean' },
},
},
},
},
paths: {
'/users': {
post: {
requestBody: {
content: {
'application/vnd.atlas.2024-01-01+json': {
schema: {
type: 'object',
properties: {
available: { type: 'boolean' },
paused: { type: 'boolean' },
},
},
},
},
},
responses: {
201: {
content: {
'application/vnd.atlas.2024-01-01+json': {
schema: {
type: 'object',
properties: {
valid: { type: 'boolean' },
hidden: { type: 'boolean' },
},
},
},
},
},
},
},
},
},
},
errors: [],
},
{
name: 'invalid schema - with "is" prefix in boolean fields',
document: {
components: {
schemas: {
SchemaName: {
properties: {
isEnabled: { type: 'boolean' },
isActive: { type: 'boolean' },
isError: { type: 'boolean' },
isString: { type: 'string' },
},
},
},
},
paths: {
'/users': {
post: {
requestBody: {
content: {
'application/vnd.atlas.2024-01-01+json': {
schema: {
type: 'object',
properties: {
isAvailable: { type: 'boolean' },
},
},
},
},
},
responses: {
201: {
content: {
'application/vnd.atlas.2024-01-01+json': {
schema: {
type: 'object',
properties: {
isValid: { type: 'boolean' },
},
},
},
},
},
},
},
},
},
},
errors: [
{
code: 'xgen-IPA-112-boolean-field-names-avoid-is-prefix',
message: 'Boolean field "isEnabled" should not use the "is" prefix. Use "enabled" instead.',
path: ['components', 'schemas', 'SchemaName', 'properties', 'isEnabled'],
severity: DiagnosticSeverity.Warning,
},
{
code: 'xgen-IPA-112-boolean-field-names-avoid-is-prefix',
message: 'Boolean field "isActive" should not use the "is" prefix. Use "active" instead.',
path: ['components', 'schemas', 'SchemaName', 'properties', 'isActive'],
severity: DiagnosticSeverity.Warning,
},
{
code: 'xgen-IPA-112-boolean-field-names-avoid-is-prefix',
message: 'Boolean field "isError" should not use the "is" prefix. Use "error" instead.',
path: ['components', 'schemas', 'SchemaName', 'properties', 'isError'],
severity: DiagnosticSeverity.Warning,
},
{
code: 'xgen-IPA-112-boolean-field-names-avoid-is-prefix',
message: 'Boolean field "isAvailable" should not use the "is" prefix. Use "available" instead.',
path: [
'paths',
'/users',
'post',
'requestBody',
'content',
'application/vnd.atlas.2024-01-01+json',
'schema',
'properties',
'isAvailable',
],
severity: DiagnosticSeverity.Warning,
},
{
code: 'xgen-IPA-112-boolean-field-names-avoid-is-prefix',
message: 'Boolean field "isValid" should not use the "is" prefix. Use "valid" instead.',
path: [
'paths',
'/users',
'post',
'responses',
'201',
'content',
'application/vnd.atlas.2024-01-01+json',
'schema',
'properties',
'isValid',
],
severity: DiagnosticSeverity.Warning,
},
],
},
{
name: 'schema with exception - "is" prefix with exception',
document: {
components: {
schemas: {
SchemaName: {
properties: {
isEnabled: {
type: 'boolean',
'x-xgen-IPA-exception': {
'xgen-IPA-112-boolean-field-names-avoid-is-prefix': 'Reason',
},
},
},
},
},
},
},
errors: [],
},
]);
18 changes: 18 additions & 0 deletions tools/spectral/ipa/rulesets/IPA-112.yaml
Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@
functions:
- IPA112AvoidProjectFieldNames
- IPA112FieldNamesAreCamelCase
- IPA112BooleanFieldNamesAvoidIsPrefix

rules:
xgen-IPA-112-avoid-project-field-names:
Expand Down Expand Up @@ -50,3 +51,20 @@ rules:
- '$.paths..responses..content[?(@property.match(/json$/i))].schema..properties[*]~'
then:
function: 'IPA112FieldNamesAreCamelCase'
xgen-IPA-112-boolean-field-names-avoid-is-prefix:
description: |
Boolean field names should avoid the "is" prefix.

##### Implementation details
Rule checks for the following conditions:
- Applies only to properties with type 'boolean'
- Identifies property names that start with "is" followed by an uppercase letter
- Suggests using the direct adjective form instead (e.g., "disabled" instead of "isDisabled")
message: '{{error}} https://mdb.link/mongodb-atlas-openapi-validation#xgen-IPA-112-boolean-field-names-avoid-is-prefix'
severity: warn
given:
- '$.components.schemas..properties[*]~'
- '$.paths..requestBody.content[?(@property.match(/json$/i))].schema..properties[*]~'
- '$.paths..responses..content[?(@property.match(/json$/i))].schema..properties[*]~'
then:
function: 'IPA112BooleanFieldNamesAvoidIsPrefix'
11 changes: 11 additions & 0 deletions tools/spectral/ipa/rulesets/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -475,6 +475,17 @@ Rule checks for the following conditions:
- Identifies property names that are not in camelCase format
- Reports any instances where these field names are not in camelCase format

#### xgen-IPA-112-boolean-field-names-avoid-is-prefix

![warn](https://img.shields.io/badge/warning-yellow)
Boolean field names should avoid the "is" prefix.

##### Implementation details
Rule checks for the following conditions:
- Applies only to properties with type 'boolean'
- Identifies property names that start with "is" followed by an uppercase letter
- Suggests using the direct adjective form instead (e.g., "disabled" instead of "isDisabled")



### IPA-113
Expand Down
Original file line number Diff line number Diff line change
@@ -0,0 +1,26 @@
import { collectAdoption, collectAndReturnViolation, collectException } from './utils/collectionUtils.js';
import { hasException } from './utils/exceptions.js';
import { resolveObject } from './utils/componentUtils.js';

const RULE_NAME = 'xgen-IPA-112-boolean-field-names-avoid-is-prefix';
const IS_PREFIX_REGEX = /^is[A-Z]/;

export default (input, options, { path, documentInventory }) => {
const oas = documentInventory.resolved;
const property = resolveObject(oas, path);

if (hasException(property, RULE_NAME)) {
collectException(property, RULE_NAME, path);
return;
}

if (property.type === 'boolean') {
if (IS_PREFIX_REGEX.test(input)) {
const suggestedName = input.charAt(2).toLowerCase() + input.slice(3);
const errorMessage = `Boolean field "${input}" should not use the "is" prefix. Use "${suggestedName}" instead.`;
return collectAndReturnViolation(path, RULE_NAME, errorMessage);
}
}

collectAdoption(path, RULE_NAME);
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@lovisaberggren lovisaberggren Mar 24, 2025

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Suggested change
if (property.type === 'boolean') {
if (IS_PREFIX_REGEX.test(input)) {
const suggestedName = input.charAt(2).toLowerCase() + input.slice(3);
const errorMessage = `Boolean field "${input}" should not use the "is" prefix. Use "${suggestedName}" instead.`;
return collectAndReturnViolation(path, RULE_NAME, errorMessage);
}
}
collectAdoption(path, RULE_NAME);
if (property.type !== 'boolean') {
return;
}
if (IS_PREFIX_REGEX.test(input)) {
const suggestedName = input.charAt(2).toLowerCase() + input.slice(3);
const errorMessage = `Boolean field "${input}" should not use the "is" prefix. Use "${suggestedName}" instead.`;
return collectAndReturnViolation(path, RULE_NAME, errorMessage);
}
collectAdoption(path, RULE_NAME);

Right now it would collect adoption for all properties that aren't booleans

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That's correct, nice catch!

};
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