MockWithExpectationsTrait::addMissingMethods() - Code Metrics - Inspection of "getUnimplementedMethods" - nopolabs/mock-with-expectations - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( 8ef040...c80b7a )

by Dan

created 2017-07-04 20:35 UTC

MockWithExpectationsTrait::addMissingMethods() A

↳ Parent: MockWithExpectationsTrait

Complexity

Conditions	2
Paths	2

Size

Total Lines	9
Code Lines	5

Duplication

Lines	0
Ratio	0 %

Importance

Changes

Metric	Value
dl	0
loc	9
rs	9.6666
c	0
b	0
f	0
nc	2
cc	2
eloc	5
nop	2

<?php
namespace Nopolabs\Test;

use Closure;
use PHPUnit\Framework\Exception;
use PHPUnit_Framework_MockObject_Matcher_Invocation;
use PHPUnit_Framework_MockObject_MockBuilder;
use PHPUnit_Framework_MockObject_MockObject;
use ReflectionClass;
use ReflectionMethod;

/**
 * This trait expects to be used in a sub-class of PHPUnit\Framework\TestCase
 */
trait MockWithExpectationsTrait
{
    // abstract methods implemented by PHPUnit\Framework\TestCase
    abstract public function getMockBuilder($className);
    abstract public static function any();
    abstract public static function at($index);
    abstract public static function atLeast($requiredInvocations);
    abstract public static function atLeastOnce();
    abstract public static function atMost($allowedInvocations);
    abstract public static function exactly($count);
    abstract public static function never();
    abstract public static function once();

    protected function newPartialMockWithExpectations(
        $className,
        array $expectations = [],
        array $constructorArgs = null): PHPUnit_Framework_MockObject_MockObject
    {
        $methods = $this->getMethodsToMock($className, $expectations);
        $mock = $this->newPartialMock($className, $methods, $constructorArgs);

        if ($this->isAssociative($expectations)) {
            return $this->setExpectations($mock, $expectations);
        }

        return $this->setAtExpectations($mock, $expectations);
    }

    protected function newPartialMock(
        $className,
        array $methods = [],
        array $constructorArgs = null): PHPUnit_Framework_MockObject_MockObject
    {
        /** @var PHPUnit_Framework_MockObject_MockBuilder $builder */
        $builder = $this->getMockBuilder($className)
            ->disableOriginalClone()
            ->disableArgumentCloning()
            ->disallowMockingUnknownTypes()
            ->setMethods(empty($methods) ? null : $methods);

        if ($constructorArgs === null) {
            $builder->disableOriginalConstructor();
        } else {
            $builder->setConstructorArgs($constructorArgs);
        }

        return $builder->getMock();
    }

    protected function setExpectations(
        PHPUnit_Framework_MockObject_MockObject $mock,
        array $expectations
    ) : PHPUnit_Framework_MockObject_MockObject
    {
        foreach ($expectations as $method => $expectation) {
            if (!is_array($expectation)) {
                $expectation = ['invoked' => $expectation];
            }
            $this->setExpectation($mock, $method, $expectation);
        }

        return $mock;
    }

    protected function setAtExpectations(
        PHPUnit_Framework_MockObject_MockObject $mock,
        array $atExpectations
    ) : PHPUnit_Framework_MockObject_MockObject
    {
        $index = 0;
        foreach ($atExpectations as $atExpectation) {
            array_push($atExpectation, []);
            list($method, $expectation) = $atExpectation;
            if ($expectation === 'never') {
                $mock->expects($this->never())->method($method);
            } elseif (is_array($expectation)) {
                $expectation['invoked'] = $this->at($index++);
                $this->setExpectation($mock, $method, $expectation);
            } else {
                throw new Exception("setAtExpectations cannot understand expectation '$expectation'");
            }
        }

        return $mock;
    }

    protected function setExpectation(
        PHPUnit_Framework_MockObject_MockObject $mock,
        $method,
        array $expectation)
    {
        $invoked = $this->getInvoked($expectation);
        $params = $expectation['params'] ?? null;
        $result = $expectation['result'] ?? null;
        $throws = $expectation['throws'] ?? null;

        if ($params !== null && !is_array($params)) {
            throw new Exception("expected params to be an array, got '$params'");
        }

        if ($result !== null && $throws !== null) {
            throw new Exception("cannot expect both 'result' and 'throws'");
        }

        $builder = $mock->expects($invoked)->method($method);

        if ($params !== null) {
            call_user_func_array([$builder, 'with'], $params);
        }

        if ($result !== null) {
            if ($result instanceof Closure) {
                $builder->willReturnCallback($result);
            } else {
                $builder->willReturn($result);
            }
        }

        if ($throws !== null) {
            $builder->willThrowException($throws);
        }
    }

    protected function getInvoked(array $expectation): PHPUnit_Framework_MockObject_Matcher_Invocation
    {
        if (isset($expectation['invoked'])) {
            if ($expectation['invoked'] instanceof PHPUnit_Framework_MockObject_Matcher_Invocation) {
                $invoked = $expectation['invoked'];
            } else {
                $invoked = $this->convertToInvocation($expectation['invoked']);
            }
        } else {
            $invoked = $this->any();
        }

        return $invoked;
    }

    protected function convertToInvocation($invoked): PHPUnit_Framework_MockObject_Matcher_Invocation
    {
        if (is_numeric($invoked)) {
            return $this->convertNumeric($invoked);
        }
        if (preg_match("/(?'method'\w+)(?:\s+(?'count'\d+))?/", $invoked, $matches)) {
            if (isset($matches['count'])) {
                return $this->convertTwoWords($matches['method'], (int)$matches['count']);
            }
            return $this->convertOneWord($matches['method']);
        }
        throw new Exception("convertToMatcher cannot convert '$invoked'");
    }

    protected function convertNumeric(int $times): PHPUnit_Framework_MockObject_Matcher_Invocation
    {
        if ($times === 0) {
            return $this->never();
        }
        if ($times === 1) {
            return $this->once();
        }
        return $this->exactly($times);
    }

    protected function convertOneWord(string $method): PHPUnit_Framework_MockObject_Matcher_Invocation
    {
        if ($method === 'once') {
            return $this->once();
        }
        if ($method === 'any') {
            return $this->any();
        }
        if ($method === 'never') {
            return $this->never();
        }
        if ($method === 'atLeastOnce') {
            return $this->atLeastOnce();
        }
        throw new Exception("convertOneWord cannot convert '$method'");
    }

    protected function convertTwoWords(string $method, int $count): PHPUnit_Framework_MockObject_Matcher_Invocation
    {
        if ($method === 'atLeast') {
            return $this->atLeast($count);
        }
        if ($method === 'exactly') {
            return $this->exactly($count);
        }
        if ($method === 'atMost') {
            return $this->atMost($count);
        }
        throw new Exception("convertTwoWords cannot convert '$method $count'");
    }

    private function isAssociative(array $array): bool
    {
        return array_keys($array) !== range(0, count($array) - 1);
    }

    private function getMethodsToMock($className, array $expectations)
    {
        $expectedMethods = $this->getExpectedMethods($expectations);

        $unimplementedMethods = $this->getUnimplementedMethods($className);

        return array_unique(array_merge($expectedMethods, $unimplementedMethods));
    }

    private function getExpectedMethods(array $expectations) : array
    {
        if ($this->isAssociative($expectations)) {
            return array_unique(array_keys($expectations));
        }

        return array_unique(array_column($expectations, 0));
    }

    private function getUnimplementedMethods($className) : array
    {
        $reflection = new ReflectionClass($className);

        if (!$reflection->isInterface() && !$reflection->isAbstract()) {
            return [];
        }

        $filter = $reflection->isInterface()
            ? ReflectionMethod::IS_PUBLIC
            : ReflectionMethod::IS_ABSTRACT;

         return array_map(function(ReflectionMethod $method) {
             return $method->name;
         }, $reflection->getMethods($filter));
    }
}


1			<?php
2			namespace Nopolabs\Test;
3
4			use Closure;
5			use PHPUnit\Framework\Exception;
6			use PHPUnit_Framework_MockObject_Matcher_Invocation;
7			use PHPUnit_Framework_MockObject_MockBuilder;
8			use PHPUnit_Framework_MockObject_MockObject;
9			use ReflectionClass;
10			use ReflectionMethod;
11
12			/**
13			* This trait expects to be used in a sub-class of PHPUnit\Framework\TestCase
14			*/
15			trait MockWithExpectationsTrait
16			{
17			// abstract methods implemented by PHPUnit\Framework\TestCase
18			abstract public function getMockBuilder($className);
19			abstract public static function any();
20			abstract public static function at($index);
21			abstract public static function atLeast($requiredInvocations);
22			abstract public static function atLeastOnce();
23			abstract public static function atMost($allowedInvocations);
24			abstract public static function exactly($count);
25			abstract public static function never();
26			abstract public static function once();
27
28			protected function newPartialMockWithExpectations(
29			$className,
30			array $expectations = [],
31			array $constructorArgs = null): PHPUnit_Framework_MockObject_MockObject
32			{
33			$methods = $this->getMethodsToMock($className, $expectations);
34			$mock = $this->newPartialMock($className, $methods, $constructorArgs);
35
36			if ($this->isAssociative($expectations)) {
37			return $this->setExpectations($mock, $expectations);
38			}
39
40			return $this->setAtExpectations($mock, $expectations);
41			}
42
43			protected function newPartialMock(
44			$className,
45			array $methods = [],
46			array $constructorArgs = null): PHPUnit_Framework_MockObject_MockObject
47			{
48			/** @var PHPUnit_Framework_MockObject_MockBuilder $builder */
49			$builder = $this->getMockBuilder($className)
50			->disableOriginalClone()
51			->disableArgumentCloning()
52			->disallowMockingUnknownTypes()
53			->setMethods(empty($methods) ? null : $methods);
54
55			if ($constructorArgs === null) {
56			$builder->disableOriginalConstructor();
57			} else {
58			$builder->setConstructorArgs($constructorArgs);
59			}
60
61			return $builder->getMock();
62			}
63
64			protected function setExpectations(
65			PHPUnit_Framework_MockObject_MockObject $mock,
66			array $expectations
67			) : PHPUnit_Framework_MockObject_MockObject
68			{
69			foreach ($expectations as $method => $expectation) {
70			if (!is_array($expectation)) {
71			$expectation = ['invoked' => $expectation];
72			}
73			$this->setExpectation($mock, $method, $expectation);
74			}
75
76			return $mock;
77			}
78
79			protected function setAtExpectations(
80			PHPUnit_Framework_MockObject_MockObject $mock,
81			array $atExpectations
82			) : PHPUnit_Framework_MockObject_MockObject
83			{
84			$index = 0;
85			foreach ($atExpectations as $atExpectation) {
86			array_push($atExpectation, []);
87			list($method, $expectation) = $atExpectation;
88			if ($expectation === 'never') {
89			$mock->expects($this->never())->method($method);
90			} elseif (is_array($expectation)) {
91			$expectation['invoked'] = $this->at($index++);
92			$this->setExpectation($mock, $method, $expectation);
93			} else {
94			throw new Exception("setAtExpectations cannot understand expectation '$expectation'");
95			}
96			}
97
98			return $mock;
99			}
100
101			protected function setExpectation(
102			PHPUnit_Framework_MockObject_MockObject $mock,
103			$method,
104			array $expectation)
105			{
106			$invoked = $this->getInvoked($expectation);
107			$params = $expectation['params'] ?? null;
108			$result = $expectation['result'] ?? null;
109			$throws = $expectation['throws'] ?? null;
110
111			if ($params !== null && !is_array($params)) {
112			throw new Exception("expected params to be an array, got '$params'");
113			}
114
115			if ($result !== null && $throws !== null) {
116			throw new Exception("cannot expect both 'result' and 'throws'");
117			}
118
119			$builder = $mock->expects($invoked)->method($method);
120
121			if ($params !== null) {
122			call_user_func_array([$builder, 'with'], $params);
123			}
124
125			if ($result !== null) {
126			if ($result instanceof Closure) {
127			$builder->willReturnCallback($result);
128			} else {
129			$builder->willReturn($result);
130			}
131			}
132
133			if ($throws !== null) {
134			$builder->willThrowException($throws);
135			}
136			}
137
138			protected function getInvoked(array $expectation): PHPUnit_Framework_MockObject_Matcher_Invocation
139			{
140			if (isset($expectation['invoked'])) {
141			if ($expectation['invoked'] instanceof PHPUnit_Framework_MockObject_Matcher_Invocation) {
142			$invoked = $expectation['invoked'];
143			} else {
144			$invoked = $this->convertToInvocation($expectation['invoked']);
145			}
146			} else {
147			$invoked = $this->any();
148			}
149
150			return $invoked;
151			}
152
153			protected function convertToInvocation($invoked): PHPUnit_Framework_MockObject_Matcher_Invocation
154			{
155			if (is_numeric($invoked)) {
156			return $this->convertNumeric($invoked);
157			}
158			if (preg_match("/(?'method'\w+)(?:\s+(?'count'\d+))?/", $invoked, $matches)) {
159			if (isset($matches['count'])) {
160			return $this->convertTwoWords($matches['method'], (int)$matches['count']);
161			}
162			return $this->convertOneWord($matches['method']);
163			}
164			throw new Exception("convertToMatcher cannot convert '$invoked'");
165			}
166
167			protected function convertNumeric(int $times): PHPUnit_Framework_MockObject_Matcher_Invocation
168			{
169			if ($times === 0) {
170			return $this->never();
171			}
172			if ($times === 1) {
173			return $this->once();
174			}
175			return $this->exactly($times);
176			}
177
178			protected function convertOneWord(string $method): PHPUnit_Framework_MockObject_Matcher_Invocation
179			{
180			if ($method === 'once') {
181			return $this->once();
182			}
183			if ($method === 'any') {
184			return $this->any();
185			}
186			if ($method === 'never') {
187			return $this->never();
188			}
189			if ($method === 'atLeastOnce') {
190			return $this->atLeastOnce();
191			}
192			throw new Exception("convertOneWord cannot convert '$method'");
193			}
194
195			protected function convertTwoWords(string $method, int $count): PHPUnit_Framework_MockObject_Matcher_Invocation
196			{
197			if ($method === 'atLeast') {
198			return $this->atLeast($count);
199			}
200			if ($method === 'exactly') {
201			return $this->exactly($count);
202			}
203			if ($method === 'atMost') {
204			return $this->atMost($count);
205			}
206			throw new Exception("convertTwoWords cannot convert '$method $count'");
207			}
208
209			private function isAssociative(array $array): bool
210			{
211			return array_keys($array) !== range(0, count($array) - 1);
212			}
213
214			private function getMethodsToMock($className, array $expectations)
215			{
216			$expectedMethods = $this->getExpectedMethods($expectations);
217
218			$unimplementedMethods = $this->getUnimplementedMethods($className);
219
220			return array_unique(array_merge($expectedMethods, $unimplementedMethods));
221			}
222
223			private function getExpectedMethods(array $expectations) : array
224			{
225			if ($this->isAssociative($expectations)) {
226			return array_unique(array_keys($expectations));
227			}
228
229			return array_unique(array_column($expectations, 0));
230			}
231
232			private function getUnimplementedMethods($className) : array
233			{
234			$reflection = new ReflectionClass($className);
235
236			if (!$reflection->isInterface() && !$reflection->isAbstract()) {
237			return [];
238			}
239
240			$filter = $reflection->isInterface()
241			? ReflectionMethod::IS_PUBLIC
242			: ReflectionMethod::IS_ABSTRACT;
243
244			return array_map(function(ReflectionMethod $method) {
245			return $method->name;
246			}, $reflection->getMethods($filter));
247			}
248			}
249

nopolabs / mock-with-expectations

Push — master ( 8ef040...c80b7a )

MockWithExpectationsTrait::addMissingMethods() A

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