platform/packages/test/lib/src/matchers.dart
2021-02-14 13:22:25 +08:00

253 lines
7.3 KiB
Dart

import 'dart:convert';
import 'dart:io';
import 'package:http/http.dart' as http;
import 'package:matcher/matcher.dart';
import 'package:angel_http_exception/angel_http_exception.dart';
import 'package:angel_validate/angel_validate.dart';
/// Expects a response to be a JSON representation of an `AngelHttpException`.
///
/// You can optionally check for a matching [message], [statusCode] and [errors].
Matcher isAngelHttpException(
{String message, int statusCode, Iterable<String> errors: const []}) =>
new _IsAngelHttpException(
message: message, statusCode: statusCode, errors: errors);
/// Expects a given response, when parsed as JSON,
/// to equal a desired value.
Matcher isJson(value) => new _IsJson(value);
/// Expects a response to have the given content type, whether a `String` or [ContentType].
Matcher hasContentType(contentType) => new _HasContentType(contentType);
/// Expects a response to have the given body.
///
/// If `true` is passed as the value (default), then this matcher will simply assert
/// that the response has a non-empty body.
///
/// If value is a `List<int>`, then it will be matched against `res.bodyBytes`.
/// Otherwise, the string value will be matched against `res.body`.
Matcher hasBody([value]) => new _HasBody(value ?? true);
/// Expects a response to have a header named [key] which contains [value]. [value] can be a `String`, or a List of `String`s.
///
/// If `value` is true (default), then this matcher will simply assert that the header is present.
Matcher hasHeader(String key, [value]) => new _HasHeader(key, value ?? true);
/// Expects a response to have the given status code.
Matcher hasStatus(int status) => new _HasStatus(status);
/// Expects a response to have a JSON body that is a `Map` and satisfies the given [validator] schema.
Matcher hasValidBody(Validator validator) => new _HasValidBody(validator);
class _IsJson extends Matcher {
var value;
_IsJson(this.value);
@override
Description describe(Description description) {
return description.add('equals the desired JSON response: $value');
}
@override
bool matches(item, Map matchState) =>
item is http.Response &&
equals(value).matches(json.decode(item.body), matchState);
}
class _HasBody extends Matcher {
final body;
_HasBody(this.body);
@override
Description describe(Description description) =>
description.add('has body $body');
@override
bool matches(item, Map matchState) {
if (item is http.Response) {
if (body == true) return isNotEmpty.matches(item.bodyBytes, matchState);
if (body is List<int>)
return equals(body).matches(item.bodyBytes, matchState);
else
return equals(body.toString()).matches(item.body, matchState);
} else {
return false;
}
}
}
class _HasContentType extends Matcher {
var contentType;
_HasContentType(this.contentType);
@override
Description describe(Description description) {
var str = contentType is ContentType
? ((contentType as ContentType).value)
: contentType.toString();
return description.add('has content type ' + str);
}
@override
bool matches(item, Map matchState) {
if (item is http.Response) {
if (!item.headers.containsKey('content-type')) return false;
if (contentType is ContentType) {
var compare = ContentType.parse(item.headers['content-type']);
return equals(contentType.mimeType)
.matches(compare.mimeType, matchState);
} else {
return equals(contentType.toString())
.matches(item.headers['content-type'], matchState);
}
} else {
return false;
}
}
}
class _HasHeader extends Matcher {
final String key;
final value;
_HasHeader(this.key, this.value);
@override
Description describe(Description description) {
if (value == true)
return description.add('contains header $key');
else
return description.add('contains header $key with value(s) $value');
}
@override
bool matches(item, Map matchState) {
if (item is http.Response) {
if (value == true) {
return contains(key.toLowerCase())
.matches(item.headers.keys, matchState);
} else {
if (!item.headers.containsKey(key.toLowerCase())) return false;
Iterable v = value is Iterable ? (value as Iterable) : [value];
return v
.map((x) => x.toString())
.every(item.headers[key.toLowerCase()].split(',').contains);
}
} else {
return false;
}
}
}
class _HasStatus extends Matcher {
int status;
_HasStatus(this.status);
@override
Description describe(Description description) {
return description.add('has status code $status');
}
@override
bool matches(item, Map matchState) =>
item is http.Response &&
equals(status).matches(item.statusCode, matchState);
}
class _HasValidBody extends Matcher {
final Validator validator;
_HasValidBody(this.validator);
@override
Description describe(Description description) =>
description.add('matches validation schema ${validator.rules}');
@override
bool matches(item, Map matchState) {
if (item is http.Response) {
final jsons = json.decode(item.body);
if (jsons is! Map) return false;
return validator.matches(jsons, matchState);
} else {
return false;
}
}
}
class _IsAngelHttpException extends Matcher {
String message;
int statusCode;
final List<String> errors = [];
_IsAngelHttpException(
{this.message, this.statusCode, Iterable<String> errors: const []}) {
this.errors.addAll(errors ?? []);
}
@override
Description describe(Description description) {
if (message?.isNotEmpty != true && statusCode == null && errors.isEmpty)
return description.add('is an Angel HTTP Exception');
else {
var buf = new StringBuffer('is an Angel HTTP Exception with');
if (statusCode != null) buf.write(' status code $statusCode');
if (message?.isNotEmpty == true) {
if (statusCode != null && errors.isNotEmpty)
buf.write(',');
else if (statusCode != null && errors.isEmpty) buf.write(' and');
buf.write(' message "$message"');
}
if (errors.isNotEmpty) {
if (statusCode != null || message?.isNotEmpty == true)
buf.write(' and errors $errors');
else
buf.write(' errors $errors');
}
return description.add(buf.toString());
}
}
@override
bool matches(item, Map matchState) {
if (item is http.Response) {
final jsons = json.decode(item.body);
if (jsons is Map && jsons['isError'] == true) {
var exc = new AngelHttpException.fromMap(jsons);
print(exc.toJson());
if (message?.isNotEmpty != true && statusCode == null && errors.isEmpty)
return true;
else {
if (statusCode != null) if (!equals(statusCode)
.matches(exc.statusCode, matchState)) return false;
if (message?.isNotEmpty == true) if (!equals(message)
.matches(exc.message, matchState)) return false;
if (errors.isNotEmpty) {
if (!errors
.every((err) => contains(err).matches(exc.errors, matchState)))
return false;
}
return true;
}
} else
return false;
} else {
return false;
}
}
}