Added test to validate nested files work

Should catch any regressions made.

Signed-off-by: quobix <dave@quobix.com>

document_test.go

@@ -1310,3 +1310,19 @@ x-string: test`)
 		t.Errorf("expected x-time to be '2020-12-24T12:00:00Z', but got %v", extVal)
 	}
 }
+
+func TestDocument_TestNestedFiles(t *testing.T) {
+	spec, err := os.ReadFile("test_specs/nested_files/openapi.yaml")
+	require.NoError(t, err)
+
+	doc, err := NewDocumentWithConfiguration(spec, &datamodel.DocumentConfiguration{
+		BasePath:                            "./test_specs/nested_files",
+		IgnorePolymorphicCircularReferences: true,
+		IgnoreArrayCircularReferences:       true,
+		AllowFileReferences:                 true,
+	})
+	require.NoError(t, err)
+
+	_, errs := doc.BuildV3Model()
+	require.Empty(t, errs)
+}

test_specs/nested_files/components/parameters/header/page-size.yaml

@@ -0,0 +1,5 @@
+name: page-size
+description: Specify the number of results to return per page.
+in: header
+schema:
+  type: integer

test_specs/nested_files/components/parameters/query/$select.yaml

@@ -0,0 +1,8 @@
+name: $select
+description: Selects the columns or properties in the result set. This cannot be combined with any other query params!
+# https://learn.microsoft.com/en-us/power-apps/developer/data-platform/webapi/query-data-web-api#select-columns
+in: query
+required: false
+schema:
+  type: string
+example: RowId,Description

test_specs/nested_files/components/requestBodies/AccountModel.yaml

@@ -0,0 +1,6 @@
+name: AccountModel
+description: TODO
+content:
+  application/json:
+    schema:
+      $ref: ../schemas/AccountModel.yaml

test_specs/nested_files/components/responses/Unspecified200.yaml

@@ -0,0 +1,5 @@
+description: Unspecified 200 success object response
+content:
+  application/json:
+    schema:
+      type: object

test_specs/nested_files/components/schemas/AccountModel.yaml

@@ -0,0 +1,73 @@
+type: object
+properties:
+  AccountId:
+    type: string
+    description: TODO
+  Name:
+    type: string
+    description: TODO
+  DepartmentId:
+    type: string
+    description: TODO
+  ForCustomerOperators:
+    type: boolean
+    description: TODO
+  ForPartIssues:
+    type: boolean
+    description: TODO
+  ForPurchaseOrders:
+    type: boolean
+    description: TODO
+  IsActive:
+    type: boolean
+    description: TODO
+  ExternalIdentifier:
+    type: string
+    description: TODO
+  Invalidated:
+    type: boolean
+    description: TODO
+  ExternalEntity:
+    type: string
+    description: TODO
+  ExternalFund:
+    type: string
+    description: TODO
+  ExternalOrganization:
+    type: string
+    description: TODO
+  ExternalAccount:
+    type: string
+    description: TODO
+  ExternalProject:
+    type: string
+    description: TODO
+  ExternalProgram:
+    type: string
+    description: TODO
+  ExternalSource:
+    type: string
+    description: TODO
+  ExternalOther1:
+    type: string
+    description: TODO
+  ExternalOther2:
+    type: string
+    description: TODO
+  SupportsAllTasks:
+    type: boolean
+    description: TODO
+  EnforceTasks:
+    type: boolean
+    description: TODO
+  MobileUniqueId:
+    format: int32
+    type: integer
+    description: TODO
+  TypeName:
+    type: string
+    description: TODO
+    readOnly: true
+  UID:
+    type: string
+    description: TODO

test_specs/nested_files/openapi.yaml

@@ -0,0 +1,21 @@
+---
+openapi: 3.0.0
+info:
+  description: Example API spec
+  version: v1
+  title: Example
+  contact:
+    name: Example
+    email: example@example.com
+    url: www.example.com
+  license:
+    name: Example
+    url: www.example.com
+tags:
+  - name: Account
+    description: Account
+servers:
+  - url: https://<hidden>
+paths:
+  /api/v1/Accounts:
+    $ref: "paths/v1_Accounts.yaml"

test_specs/nested_files/paths/v1_Accounts.yaml

@@ -0,0 +1,42 @@
+get:
+  summary: TODO
+  description: TODO
+  security:
+  - BearerAuth: []
+  tags:
+    - Account
+  operationId: getAccounts
+  parameters:
+    - $ref: ../components/parameters/query/$select.yaml
+    - $ref: ../components/parameters/header/page-size.yaml
+  responses:
+    "200":
+      $ref: ../components/responses/Unspecified200.yaml
+
+post:
+  summary: TODO
+  description: TODO
+  security:
+  - BearerAuth: []
+  tags:
+    - Account
+  operationId: createAccounts
+  requestBody:
+    $ref: ../components/requestBodies/AccountModel.yaml
+  responses:
+    "200":
+      $ref: ../components/responses/Unspecified200.yaml
+
+put:
+  summary: TODO
+  description: TODO
+  security:
+  - BearerAuth: []
+  tags:
+    - Account
+  operationId: updateAccounts
+  requestBody:
+    $ref: ../components/requestBodies/AccountModel.yaml
+  responses:
+    "200":
+      $ref: ../components/responses/Unspecified200.yaml