release: v2.16.0

[2.x] Add support for nested traversable in sequence

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -0,0 +1,66 @@
+name: Bug Report
+description: Report an Issue or Bug with the Pest
+title: "[Bug]: "
+labels: ["bug"]
+body:
+  - type: markdown
+    attributes:
+      value: |
+        We're sorry to hear you have a problem. Can you help us solve it by providing the following details.
+  - type: textarea
+    id: what-happened
+    attributes:
+      label: What Happened
+      description: What did you expect to happen?
+      placeholder: When I use expect()->toBeTrue() in my tests, I get an error
+    validations:
+      required: true
+  - type: textarea
+    id: how-to-reproduce
+    attributes:
+      label: How to Reproduce
+      description: How did this occur, please add any config values used and provide a set of reliable steps if possible.
+      placeholder: Install a fresh Laravel app, add Pest, add a test that uses expect()->toBeTrue()
+    validations:
+      required: true
+  - type: input
+    id: repository-sample
+    attributes:
+      label: Sample Repository
+      description: If possible, please provide a sample repository that reproduces the issue.
+      placeholder: https://github.com.br/your-username/your-repository
+  - type: input
+    id: pest-version
+    attributes:
+      label: Pest Version
+      description: What version of our Package are you running? Please be as specific as possible
+      placeholder: 2.14.1
+    validations:
+      required: true
+  - type: input
+    id: php-version
+    attributes:
+      label: PHP Version
+      description: What version of PHP are you running? Please be as specific as possible
+      placeholder: 8.1.20
+    validations:
+      required: true
+  - type: dropdown
+    id: operating-systems
+    attributes:
+      label: Operation System
+      description: On which operating systems does the problem occur? You can select more than one.
+      multiple: true
+      options:
+        - macOS
+        - Windows
+        - Linux
+    validations:
+      required: true
+  - type: textarea
+    id: notes
+    attributes:
+      label: Notes
+      description: Use this field to provide any other notes that you feel might be relevant to the issue.
+    validations:
+      required: false

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,10 +1,16 @@
-| Q             | A
-| ------------- | ---
-| Bug fix?      | yes/no
-| New feature?  | yes/no
-| Fixed tickets | #... <!-- #-prefixed issue number(s), if any -->
-
 <!--
-- Replace this comment by a description of what your PR is solving.
+- Fill in the form below correctly. This will help the Pest team to understand the PR and also work on it.
 -->
 
+### What:
+
+- [ ] Bug Fix
+- [ ] New Feature
+
+### Description:
+
+<!-- describe what your PR is solving -->
+
+### Related:
+
+<!-- link to the issue(s) your PR is solving. If it doesn't exist, remove the "Related" section. -->

composer.json

@@ -22,7 +22,7 @@
         "nunomaduro/collision": "^7.8.1",
         "nunomaduro/termwind": "^1.15.1",
         "pestphp/pest-plugin": "^2.0.1",
-        "pestphp/pest-plugin-arch": "^2.2.3",
+        "pestphp/pest-plugin-arch": "^2.3.1",
         "phpunit/phpunit": "^10.3.2"
     },
     "conflict": {
@@ -50,7 +50,7 @@
         ]
     },
     "require-dev": {
-        "pestphp/pest-dev-tools": "^2.15.0",
+        "pestphp/pest-dev-tools": "^2.16.0",
         "pestphp/pest-plugin-type-coverage": "^2.0.0",
         "symfony/process": "^6.3.2"
     },

phpstan.neon

@@ -1,5 +1,6 @@
 includes:
     - vendor/phpstan/phpstan-strict-rules/rules.neon
+    - vendor/ergebnis/phpstan-rules/rules.neon
     - vendor/thecodingmachine/phpstan-strict-rules/phpstan-strict-rules.neon
 
 parameters:
@@ -11,4 +12,12 @@ parameters:
     reportUnmatchedIgnoredErrors: true
 
     ignoreErrors:
+        - "#has a nullable return type declaration.#"
+        - "#Language construct isset\\(\\) should not be used.#"
+        - "#is not allowed to extend#"
+        - "#is concrete, but does not have a Test suffix#"
+        - "#with a nullable type declaration#"
         - "#type mixed is not subtype of native#"
+        - "# with null as default value#"
+        - "#has parameter \\$closure with default value.#"
+        - "#has parameter \\$description with default value.#"

src/Expectation.php

@@ -6,6 +6,8 @@ namespace Pest;
 
 use BadMethodCallException;
 use Closure;
+use InvalidArgumentException;
+use OutOfRangeException;
 use Pest\Arch\Contracts\ArchExpectation;
 use Pest\Arch\Expectations\Targeted;
 use Pest\Arch\Expectations\ToBeUsedIn;
@@ -28,7 +30,6 @@ use Pest\Expectations\OppositeExpectation;
 use Pest\Matchers\Any;
 use Pest\Support\ExpectationPipeline;
 use PHPUnit\Architecture\Elements\ObjectDescription;
-use PHPUnit\Framework\Assert;
 use PHPUnit\Framework\ExpectationFailedException;
 
 /**
@@ -219,30 +220,26 @@ final class Expectation
             throw new BadMethodCallException('Expectation value is not iterable.');
         }
 
-        $value = is_array($this->value) ? $this->value : iterator_to_array($this->value);
-        $keys = array_keys($value);
-        $values = array_values($value);
-        $callbacksCount = count($callbacks);
-
-        $index = 0;
-
-        while (count($callbacks) < count($values)) {
-            $callbacks[] = $callbacks[$index];
-            $index = $index < count($values) - 1 ? $index + 1 : 0;
+        if (count($callbacks) == 0) {
+            throw new InvalidArgumentException('No sequence expectations defined.');
         }
 
-        if ($callbacksCount > count($values)) {
-            Assert::assertLessThanOrEqual(count($value), count($callbacks));
-        }
+        $index = $valuesCount = 0;
 
-        foreach ($values as $key => $item) {
-            if ($callbacks[$key] instanceof Closure) {
-                call_user_func($callbacks[$key], new self($item), new self($keys[$key]));
+        foreach ($this->value as $key => $value) {
+            $valuesCount++;
 
-                continue;
+            if ($callbacks[$index] instanceof Closure) {
+                $callbacks[$index](new self($value), new self($key));
+            } else {
+                (new self($value))->toEqual($callbacks[$index]);
             }
 
-            (new self($item))->toEqual($callbacks[$key]);
+            $index = isset($callbacks[$index + 1]) ? $index + 1 : 0;
+        }
+
+        if (count($callbacks) > $valuesCount) {
+            throw new OutOfRangeException('Sequence expectations are more than the iterable items.');
         }
 
         return $this;
@@ -740,4 +737,100 @@ final class Expectation
             FileLineFinder::where(fn (string $line): bool => str_contains($line, 'class'))
         );
     }
+
+    /**
+     * Asserts that the given expectation is iterable and contains snake_case keys.
+     *
+     * @return self<TValue>
+     */
+    public function toHaveSnakeCaseKeys(string $message = ''): self
+    {
+        if (! is_iterable($this->value)) {
+            InvalidExpectationValue::expected('iterable');
+        }
+
+        foreach ($this->value as $k => $item) {
+            if (is_string($k)) {
+                $this->and($k)->toBeSnakeCase($message);
+            }
+
+            if (is_array($item)) {
+                $this->and($item)->toHaveSnakeCaseKeys($message);
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the given expectation is iterable and contains kebab-case keys.
+     *
+     * @return self<TValue>
+     */
+    public function toHaveKebabCaseKeys(string $message = ''): self
+    {
+        if (! is_iterable($this->value)) {
+            InvalidExpectationValue::expected('iterable');
+        }
+
+        foreach ($this->value as $k => $item) {
+            if (is_string($k)) {
+                $this->and($k)->toBeKebabCase($message);
+            }
+
+            if (is_array($item)) {
+                $this->and($item)->toHaveKebabCaseKeys($message);
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the given expectation is iterable and contains camelCase keys.
+     *
+     * @return self<TValue>
+     */
+    public function toHaveCamelCaseKeys(string $message = ''): self
+    {
+        if (! is_iterable($this->value)) {
+            InvalidExpectationValue::expected('iterable');
+        }
+
+        foreach ($this->value as $k => $item) {
+            if (is_string($k)) {
+                $this->and($k)->toBeCamelCase($message);
+            }
+
+            if (is_array($item)) {
+                $this->and($item)->toHaveCamelCaseKeys($message);
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the given expectation is iterable and contains StudlyCase keys.
+     *
+     * @return self<TValue>
+     */
+    public function toHaveStudlyCaseKeys(string $message = ''): self
+    {
+        if (! is_iterable($this->value)) {
+            InvalidExpectationValue::expected('iterable');
+        }
+
+        foreach ($this->value as $k => $item) {
+            if (is_string($k)) {
+                $this->and($k)->toBeStudlyCase($message);
+            }
+
+            if (is_array($item)) {
+                $this->and($item)->toHaveStudlyCaseKeys($message);
+            }
+        }
+
+        return $this;
+    }
 }

src/Factories/Attributes/Attribute.php

@@ -20,7 +20,7 @@ abstract class Attribute
      * @param  array<int, string>  $attributes
      * @return array<int, string>
      */
-    public function __invoke(TestCaseMethodFactory $method, array $attributes): array
+    public function __invoke(TestCaseMethodFactory $method, array $attributes): array  // @phpstan-ignore-line
     {
         return $attributes;
     }

src/Factories/TestCaseFactory.php

@@ -193,7 +193,7 @@ final class TestCaseFactory
             }
             PHP;
 
-            eval($classCode);
+            eval($classCode); // @phpstan-ignore-line
         } catch (ParseError $caught) {
             throw new RuntimeException(sprintf(
                 "Unable to create test case for test file at %s. \n %s",

src/KernelDump.php

@@ -40,7 +40,7 @@ final class KernelDump
      */
     public function disable(): void
     {
-        @ob_clean();
+        @ob_clean(); // @phpstan-ignore-line
 
         if ($this->buffer !== '') {
             $this->flush();

src/Mixins/Expectation.php

@@ -502,6 +502,18 @@ final class Expectation
         return $this;
     }
 
+    /**
+     * Asserts that the value contains only digits.
+     *
+     * @return self<TValue>
+     */
+    public function toBeDigits(string $message = ''): self
+    {
+        Assert::assertTrue(ctype_digit((string) $this->value), $message);
+
+        return $this;
+    }
+
     /**
      * Asserts that the value is of type object.
      *
@@ -1009,4 +1021,76 @@ final class Expectation
 
         return $this;
     }
+
+    /**
+     * Asserts that the value is snake_case.
+     *
+     * @return self<TValue>
+     */
+    public function toBeSnakeCase(string $message = ''): self
+    {
+        $value = (string) $this->value;
+
+        if ($message === '') {
+            $message = "Failed asserting that {$value} is snake_case.";
+        }
+
+        Assert::assertTrue((bool) preg_match('/^[\p{Ll}_]+$/u', $value), $message);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is kebab-case.
+     *
+     * @return self<TValue>
+     */
+    public function toBeKebabCase(string $message = ''): self
+    {
+        $value = (string) $this->value;
+
+        if ($message === '') {
+            $message = "Failed asserting that {$value} is kebab-case.";
+        }
+
+        Assert::assertTrue((bool) preg_match('/^[\p{Ll}-]+$/u', $value), $message);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is camelCase.
+     *
+     * @return self<TValue>
+     */
+    public function toBeCamelCase(string $message = ''): self
+    {
+        $value = (string) $this->value;
+
+        if ($message === '') {
+            $message = "Failed asserting that {$value} is camelCase.";
+        }
+
+        Assert::assertTrue((bool) preg_match('/^\p{Ll}[\p{Ll}\p{Lu}]+$/u', $value), $message);
+
+        return $this;
+    }
+
+    /**
+     * Asserts that the value is StudlyCase.
+     *
+     * @return self<TValue>
+     */
+    public function toBeStudlyCase(string $message = ''): self
+    {
+        $value = (string) $this->value;
+
+        if ($message === '') {
+            $message = "Failed asserting that {$value} is StudlyCase.";
+        }
+
+        Assert::assertTrue((bool) preg_match('/^\p{Lu}+\p{Ll}[\p{Ll}\p{Lu}]+$/u', $value), $message);
+
+        return $this;
+    }
 }

src/Pest.php

@@ -6,7 +6,7 @@ namespace Pest;
 
 function version(): string
 {
-    return '2.15.0';
+    return '2.16.0';
 }
 
 function testDirectory(string $file = ''): string

stubs/init-laravel/phpunit.xml.stub

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.3/phpunit.xsd"
          bootstrap="vendor/autoload.php"
          colors="true"
 >

stubs/init/phpunit.xml.stub

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
-         xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
+         xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/10.3/phpunit.xsd"
          bootstrap="vendor/autoload.php"
          colors="true"
 >

tests/.pest/snapshots/Visual/Help/visual_snapshot_of_help_command_output.snap

@@ -1,5 +1,5 @@
 
-  Pest Testing Framework 2.15.0.  
+  Pest Testing Framework 2.16.0.  
 
   USAGE: pest <file> [options]  
 

tests/.pest/snapshots/Visual/Version/visual_snapshot_of_help_command_output.snap

@@ -1,3 +1,3 @@
 
-  Pest Testing Framework 2.15.0.  
+  Pest Testing Framework 2.16.0.  
 

tests/.snapshots/success.txt

@@ -297,12 +297,14 @@
 
    PASS  Tests\Features\Expect\sequence
   ✓ an exception is thrown if the the type is not iterable
+  ✓ an exception is thrown if there are no expectations
   ✓ allows for sequences of checks to be run on iterable data
   ✓ loops back to the start if it runs out of sequence items
-  ✓ fails if the number of iterable items is greater than the number of expectations
+  ✓ fails if the number of iterable items is less than the number of expectations
   ✓ it works with associative arrays
   ✓ it can be passed non-callable values
   ✓ it can be passed a mixture of value types
+  ✓ it works with traversables
 
    PASS  Tests\Features\Expect\toBe
   ✓ strict comparisons
@@ -338,6 +340,18 @@
   ✓ pass
   ✓ failures
   ✓ failures with custom message
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeCamelCase
+  ✓ pass
+  ✓ failures
+  ✓ failures with custom message
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeDigits
+  ✓ pass
+  ✓ failures
+  ✓ failures with custom message
   ✓ not failures
 
    PASS  Tests\Features\Expect\toBeDirectory
@@ -441,6 +455,12 @@
   ✓ pass
   ✓ failures
   ✓ failures with custom message
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeKebabCase
+  ✓ pass
+  ✓ failures
+  ✓ failures with custom message
   ✓ not failures
 
    PASS  Tests\Features\Expect\toBeLessThan
@@ -509,12 +529,24 @@
   ✓ pass
   ✓ failures
   ✓ failures with custom message
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeSnakeCase
+  ✓ pass
+  ✓ failures
+  ✓ failures with custom message
   ✓ not failures
 
    PASS  Tests\Features\Expect\toBeString
   ✓ pass
   ✓ failures
   ✓ failures with custom message
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toBeStudlyCase
+  ✓ pass
+  ✓ failures
+  ✓ failures with custom message
   ✓ not failures
 
    PASS  Tests\Features\Expect\toBeTrue
@@ -596,12 +628,24 @@
    PASS  Tests\Features\Expect\toEqualWithDelta
   ✓ pass
   ✓ failures with custom message
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toHaveCamelCaseKeys
+  ✓ pass
+  ✓ failures
+  ✓ failures with message
   ✓ not failures
 
    PASS  Tests\Features\Expect\toHaveCount
   ✓ pass
   ✓ failures
   ✓ failures with message
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toHaveKebabCaseKeys
+  ✓ pass
+  ✓ failures
+  ✓ failures with message
   ✓ not failures
 
    PASS  Tests\Features\Expect\toHaveKey
@@ -678,6 +722,18 @@
   ✓ failures
   ✓ failures with message
   ✓ failures with message and Any matcher
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toHaveSnakeCaseKeys
+  ✓ pass
+  ✓ failures
+  ✓ failures with message
+  ✓ not failures
+
+   PASS  Tests\Features\Expect\toHaveStudlyCaseKeys
+  ✓ pass
+  ✓ failures
+  ✓ failures with message
   ✓ not failures
 
    PASS  Tests\Features\Expect\toHaveSuffix
@@ -1240,4 +1296,4 @@
    WARN  Tests\Visual\Version
   - visual snapshot of help command output
 
-  Tests:    2 deprecated, 4 warnings, 5 incomplete, 2 notices, 13 todos, 19 skipped, 878 passed (2013 assertions)
+  Tests:    2 deprecated, 4 warnings, 5 incomplete, 2 notices, 13 todos, 19 skipped, 916 passed (2190 assertions)

tests/Arch.php

@@ -3,7 +3,7 @@
 use Pest\Expectation;
 
 test('globals')
-    ->expect(['dd', 'dump', 'ray'])
+    ->expect(['dd', 'dump', 'ray', 'die', 'var_dump', 'sleep'])
     ->not->toBeUsed()
     ->ignoring(Expectation::class);
 

tests/Features/Expect/sequence.php

@@ -1,11 +1,13 @@
 <?php
 
-use PHPUnit\Framework\ExpectationFailedException;
-
 test('an exception is thrown if the the type is not iterable', function () {
     expect('Foobar')->each->sequence();
 })->throws(BadMethodCallException::class, 'Expectation value is not iterable.');
 
+test('an exception is thrown if there are no expectations', function () {
+    expect(['Foobar'])->sequence();
+})->throws(InvalidArgumentException::class, 'No sequence expectations defined.');
+
 test('allows for sequences of checks to be run on iterable data', function () {
     expect([1, 2, 3])
         ->sequence(
@@ -40,7 +42,7 @@ test('loops back to the start if it runs out of sequence items', function () {
     expect(static::getCount())->toBe(16);
 });
 
-test('fails if the number of iterable items is greater than the number of expectations', function () {
+test('fails if the number of iterable items is less than the number of expectations', function () {
     expect([1, 2])
         ->sequence(
             function ($expectation) {
@@ -53,7 +55,7 @@ test('fails if the number of iterable items is greater than the number of expect
                 $expectation->toBeInt()->toEqual(3);
             },
         );
-})->throws(ExpectationFailedException::class);
+})->throws(OutOfRangeException::class, 'Sequence expectations are more than the iterable items.');
 
 test('it works with associative arrays', function () {
     expect(['foo' => 'bar', 'baz' => 'boom'])
@@ -86,3 +88,26 @@ test('it can be passed a mixture of value types', function () {
 
     expect(static::getCount())->toBe(4);
 });
+
+test('it works with traversables', function () {
+    $generator = (function () {
+        yield 'one' => (fn () => yield from [1, 2, 3])();
+        yield 'two' => (fn () => yield from [4, 5, 6])();
+        yield 'three' => (fn () => yield from [7, 8, 9])();
+    })();
+
+    expect($generator)->sequence(
+        fn ($value, $key) => $key->toBe('one')
+            ->and($value)
+            ->toBeInstanceOf(Generator::class)
+            ->sequence(1, 2, 3),
+        fn ($value, $key) => $key->toBe('two')
+            ->and($value)
+            ->toBeInstanceOf(Generator::class)
+            ->sequence(4, 5, 6),
+        fn ($value, $key) => $key->toBe('three')
+            ->and($value)
+            ->toBeInstanceOf(Generator::class)
+            ->sequence(7, 8, 9),
+    );
+});

tests/Features/Expect/toBeCamelCase.php

@@ -0,0 +1,23 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('abc')->toBeCamelCase();
+    expect('abcDef')->toBeCamelCase();
+    expect('abc-def')->not->toBeCamelCase();
+    expect('abc-def')->not->toBeCamelCase();
+    expect('AbcDef')->not->toBeCamelCase();
+});
+
+test('failures', function () {
+    expect('Abc')->toBeCamelCase();
+})->throws(ExpectationFailedException::class);
+
+test('failures with custom message', function () {
+    expect('Abc')->toBeCamelCase('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () {
+    expect('abcDef')->not->toBeCamelCase();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeDigits.php

@@ -0,0 +1,20 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('123')->toBeDigits();
+    expect('123.14')->not->toBeDigits();
+});
+
+test('failures', function () {
+    expect('123.14')->toBeDigits();
+})->throws(ExpectationFailedException::class);
+
+test('failures with custom message', function () {
+    expect('123.14')->toBeDigits('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () {
+    expect('445')->not->toBeDigits();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeKebabCase.php

@@ -0,0 +1,23 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('abc')->toBeKebabCase();
+    expect('abc-def')->toBeKebabCase();
+    expect('abc_def')->not->toBeKebabCase();
+    expect('abcDef')->not->toBeKebabCase();
+    expect('AbcDef')->not->toBeKebabCase();
+});
+
+test('failures', function () {
+    expect('Abc')->toBeKebabCase();
+})->throws(ExpectationFailedException::class);
+
+test('failures with custom message', function () {
+    expect('Abc')->toBeKebabCase('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () {
+    expect('abc-def')->not->toBeKebabCase();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeSnakeCase.php

@@ -0,0 +1,23 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('abc')->toBeSnakeCase();
+    expect('abc_def')->toBeSnakeCase();
+    expect('abc-def')->not->toBeSnakeCase();
+    expect('abcDef')->not->toBeSnakeCase();
+    expect('AbcDef')->not->toBeSnakeCase();
+});
+
+test('failures', function () {
+    expect('Abc')->toBeSnakeCase();
+})->throws(ExpectationFailedException::class);
+
+test('failures with custom message', function () {
+    expect('Abc')->toBeSnakeCase('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () {
+    expect('abc_def')->not->toBeSnakeCase();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toBeStudlyCase.php

@@ -0,0 +1,23 @@
+<?php
+
+use PHPUnit\Framework\ExpectationFailedException;
+
+test('pass', function () {
+    expect('Abc')->toBeStudlyCase();
+    expect('AbcDef')->toBeStudlyCase();
+    expect('abc-def')->not->toBeStudlyCase();
+    expect('abc-def')->not->toBeStudlyCase();
+    expect('abc')->not->toBeStudlyCase();
+});
+
+test('failures', function () {
+    expect('abc')->toBeStudlyCase();
+})->throws(ExpectationFailedException::class);
+
+test('failures with custom message', function () {
+    expect('abc')->toBeStudlyCase('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () {
+    expect('AbcDef')->not->toBeStudlyCase();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toHaveCamelCaseKeys.php

@@ -0,0 +1,36 @@
+<?php
+
+use Pest\Exceptions\InvalidExpectationValue;
+use PHPUnit\Framework\ExpectationFailedException;
+
+$array = [
+    'camel' => true,
+    'camelCase' => [
+        'camel' => true,
+        'camelCase' => [
+            'camel' => true,
+            'camelCase' => true,
+        ],
+        'list' => [
+            'abc',
+            'def',
+            'ghi',
+        ],
+    ],
+];
+
+test('pass', function () use ($array) {
+    expect($array)->toHaveCamelCaseKeys();
+});
+
+test('failures', function () {
+    expect('not-an-array')->toHaveCamelCaseKeys();
+})->throws(InvalidExpectationValue::class);
+
+test('failures with message', function () use ($array) {
+    expect($array)->not->toHaveCamelCaseKeys('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () use ($array) {
+    expect($array)->not->toHaveCamelCaseKeys();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toHaveKebabCaseKeys.php

@@ -0,0 +1,36 @@
+<?php
+
+use Pest\Exceptions\InvalidExpectationValue;
+use PHPUnit\Framework\ExpectationFailedException;
+
+$array = [
+    'kebab' => true,
+    'kebab-case' => [
+        'kebab' => true,
+        'kebab-case' => [
+            'kebab' => true,
+            'kebab-case' => true,
+        ],
+        'list' => [
+            'abc',
+            'def',
+            'ghi',
+        ],
+    ],
+];
+
+test('pass', function () use ($array) {
+    expect($array)->toHaveKebabCaseKeys();
+});
+
+test('failures', function () {
+    expect('not-an-array')->toHaveKebabCaseKeys();
+})->throws(InvalidExpectationValue::class);
+
+test('failures with message', function () use ($array) {
+    expect($array)->not->toHaveKebabCaseKeys('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () use ($array) {
+    expect($array)->not->toHaveKebabCaseKeys();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toHaveSnakeCaseKeys.php

@@ -0,0 +1,36 @@
+<?php
+
+use Pest\Exceptions\InvalidExpectationValue;
+use PHPUnit\Framework\ExpectationFailedException;
+
+$array = [
+    'snake' => true,
+    'snake_case' => [
+        'snake' => true,
+        'snake_case' => [
+            'snake' => true,
+            'snake_case' => true,
+        ],
+        'list' => [
+            'abc',
+            'def',
+            'ghi',
+        ],
+    ],
+];
+
+test('pass', function () use ($array) {
+    expect($array)->toHaveSnakeCaseKeys();
+});
+
+test('failures', function () {
+    expect('not-an-array')->toHaveSnakeCaseKeys();
+})->throws(InvalidExpectationValue::class);
+
+test('failures with message', function () use ($array) {
+    expect($array)->not->toHaveSnakeCaseKeys('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () use ($array) {
+    expect($array)->not->toHaveSnakeCaseKeys();
+})->throws(ExpectationFailedException::class);

tests/Features/Expect/toHaveStudlyCaseKeys.php

@@ -0,0 +1,36 @@
+<?php
+
+use Pest\Exceptions\InvalidExpectationValue;
+use PHPUnit\Framework\ExpectationFailedException;
+
+$array = [
+    'Studly' => true,
+    'StudlyCase' => [
+        'Studly' => true,
+        'StudlyCase' => [
+            'Studly' => true,
+            'StudlyCase' => true,
+        ],
+        'List' => [
+            'abc',
+            'def',
+            'ghi',
+        ],
+    ],
+];
+
+test('pass', function () use ($array) {
+    expect($array)->toHaveStudlyCaseKeys();
+});
+
+test('failures', function () {
+    expect('not-an-array')->toHaveStudlyCaseKeys();
+})->throws(InvalidExpectationValue::class);
+
+test('failures with message', function () use ($array) {
+    expect($array)->not->toHaveStudlyCaseKeys('oh no!');
+})->throws(ExpectationFailedException::class, 'oh no!');
+
+test('not failures', function () use ($array) {
+    expect($array)->not->toHaveStudlyCaseKeys();
+})->throws(ExpectationFailedException::class);

tests/Visual/Parallel.php

@@ -16,7 +16,7 @@ $run = function () {
 
 test('parallel', function () use ($run) {
     expect($run('--exclude-group=integration'))
-        ->toContain('Tests:    1 deprecated, 4 warnings, 5 incomplete, 2 notices, 13 todos, 15 skipped, 867 passed (1998 assertions)')
+        ->toContain('Tests:    1 deprecated, 4 warnings, 5 incomplete, 2 notices, 13 todos, 15 skipped, 905 passed (2175 assertions)')
         ->toContain('Parallel: 3 processes');
 })->skipOnWindows();