Merge pull request #1295 from jshayes/nested-describe

Support for nested describe blocks

src/Concerns/Testable.php

@@ -61,8 +61,10 @@ trait Testable
 
     /**
      * The test's describing, if any.
+     *
+     * @var array<int, string>
      */
-    public ?string $__describing = null;
+    public array $__describing = [];
 
     /**
      * Whether the test has ran or not.

src/Factories/TestCaseMethodFactory.php

@@ -31,8 +31,10 @@ final class TestCaseMethodFactory
 
     /**
      * The test's describing, if any.
+     *
+     * @var array<int, string>
      */
-    public ?string $describing = null;
+    public array $describing = [];
 
     /**
      * The test's description, if any.
@@ -201,7 +203,7 @@ final class TestCaseMethodFactory
         ];
 
         foreach ($this->depends as $depend) {
-            $depend = Str::evaluable($this->describing !== null ? Str::describe($this->describing, $depend) : $depend);
+            $depend = Str::evaluable($this->describing === [] ? $depend : Str::describe($this->describing, $depend));
 
             $this->attributes[] = new Attribute(
                 \PHPUnit\Framework\Attributes\Depends::class,

src/Functions.php

@@ -43,7 +43,7 @@ if (! function_exists('beforeAll')) {
      */
     function beforeAll(Closure $closure): void
     {
-        if (! is_null(DescribeCall::describing())) {
+        if (DescribeCall::describing() !== []) {
             $filename = Backtrace::file();
 
             throw new BeforeAllWithinDescribe($filename);
@@ -205,7 +205,7 @@ if (! function_exists('afterAll')) {
      */
     function afterAll(Closure $closure): void
     {
-        if (! is_null(DescribeCall::describing())) {
+        if (DescribeCall::describing() !== []) {
             $filename = Backtrace::file();
 
             throw new AfterAllWithinDescribe($filename);

src/PendingCalls/AfterEachCall.php

@@ -6,6 +6,7 @@ namespace Pest\PendingCalls;
 
 use Closure;
 use Pest\PendingCalls\Concerns\Describable;
+use Pest\Support\Arr;
 use Pest\Support\Backtrace;
 use Pest\Support\ChainableClosure;
 use Pest\Support\HigherOrderMessageCollection;
@@ -54,7 +55,7 @@ final class AfterEachCall
         $proxies = $this->proxies;
 
         $afterEachTestCase = ChainableClosure::boundWhen(
-            fn (): bool => is_null($describing) || $this->__describing === $describing,
+            fn (): bool => $describing === [] || in_array(Arr::last($describing), $this->__describing, true),
             ChainableClosure::bound(fn () => $proxies->chain($this), $this->closure)->bindTo($this, self::class), // @phpstan-ignore-line
         )->bindTo($this, self::class);
 

src/PendingCalls/BeforeEachCall.php

@@ -7,6 +7,7 @@ namespace Pest\PendingCalls;
 use Closure;
 use Pest\Exceptions\AfterBeforeTestFunction;
 use Pest\PendingCalls\Concerns\Describable;
+use Pest\Support\Arr;
 use Pest\Support\Backtrace;
 use Pest\Support\ChainableClosure;
 use Pest\Support\HigherOrderMessageCollection;
@@ -63,12 +64,12 @@ final class BeforeEachCall
 
         $beforeEachTestCall = function (TestCall $testCall) use ($describing): void {
 
-            if ($this->describing !== null) {
-                if ($describing !== $this->describing) {
+            if ($this->describing !== []) {
+                if (Arr::last($describing) !== Arr::last($this->describing)) {
                     return;
                 }
 
-                if ($describing !== $testCall->describing) {
+                if (! in_array(Arr::last($describing), $testCall->describing, true)) {
                     return;
                 }
             }
@@ -77,7 +78,7 @@ final class BeforeEachCall
         };
 
         $beforeEachTestCase = ChainableClosure::boundWhen(
-            fn (): bool => is_null($describing) || $this->__describing === $describing,
+            fn (): bool => $describing === [] || in_array(Arr::last($describing), $this->__describing, true),
             ChainableClosure::bound(fn () => $testCaseProxies->chain($this), $this->closure)->bindTo($this, self::class), // @phpstan-ignore-line
         )->bindTo($this, self::class);
 
@@ -96,7 +97,7 @@ final class BeforeEachCall
      */
     public function after(Closure $closure): self
     {
-        if ($this->describing === null) {
+        if ($this->describing === []) {
             throw new AfterBeforeTestFunction($this->filename);
         }
 

src/PendingCalls/Concerns/Describable.php

@@ -11,11 +11,15 @@ trait Describable
 {
     /**
      * Note: this is property is not used; however, it gets added automatically by rector php.
+     *
+     * @var array<int, string>
      */
-    public string $__describing;
+    public array $__describing;
 
     /**
      * The describing of the test case.
+     *
+     * @var array<int, string>
      */
-    public ?string $describing = null;
+    public array $describing = [];
 }

src/PendingCalls/DescribeCall.php

@@ -15,8 +15,10 @@ final class DescribeCall
 {
     /**
      * The current describe call.
+     *
+     * @var array<int, string>
      */
-    private static ?string $describing = null;
+    private static array $describing = [];
 
     /**
      * The describe "before each" call.
@@ -37,8 +39,10 @@ final class DescribeCall
 
     /**
      * What is the current describing.
+     *
+     * @return array<int, string>
      */
-    public static function describing(): ?string
+    public static function describing(): array
     {
         return self::$describing;
     }
@@ -50,12 +54,12 @@ final class DescribeCall
     {
         unset($this->currentBeforeEachCall);
 
-        self::$describing = $this->description;
+        self::$describing[] = $this->description;
 
         try {
             ($this->tests)();
         } finally {
-            self::$describing = null;
+            array_pop(self::$describing);
         }
     }
 
@@ -71,7 +75,7 @@ final class DescribeCall
         if (! $this->currentBeforeEachCall instanceof \Pest\PendingCalls\BeforeEachCall) {
             $this->currentBeforeEachCall = new BeforeEachCall(TestSuite::getInstance(), $filename);
 
-            $this->currentBeforeEachCall->describing = $this->description;
+            $this->currentBeforeEachCall->describing[] = $this->description;
         }
 
         $this->currentBeforeEachCall->{$name}(...$arguments); // @phpstan-ignore-line

src/PendingCalls/TestCall.php

@@ -76,7 +76,7 @@ final class TestCall // @phpstan-ignore-line
             throw new TestDescriptionMissing($this->filename);
         }
 
-        $description = is_null($this->describing)
+        $description = $this->describing === []
             ? $this->description
             : Str::describe($this->describing, $this->description);
 
@@ -683,7 +683,7 @@ final class TestCall // @phpstan-ignore-line
             throw new TestDescriptionMissing($this->filename);
         }
 
-        if (! is_null($this->describing)) {
+        if ($this->describing !== []) {
             $this->testCaseMethod->describing = $this->describing;
             $this->testCaseMethod->description = Str::describe($this->describing, $this->description);
         } else {

src/Support/Arr.php

@@ -81,4 +81,14 @@ final class Arr
 
         return $results;
     }
+
+    /**
+     * Returns the value of the last element or false for empty array
+     *
+     * @param  array<array-key, mixed>  $array
+     */
+    public static function last(array $array): mixed
+    {
+        return end($array);
+    }
 }

src/Support/Str.php

@@ -103,10 +103,14 @@ final class Str
 
     /**
      * Creates a describe block as `$describeDescription` → `$testDescription` format.
+     *
+     * @param  array<int, string>  $describeDescriptions
      */
-    public static function describe(string $describeDescription, string $testDescription): string
+    public static function describe(array $describeDescriptions, string $testDescription): string
     {
-        return sprintf('`%s` → %s', $describeDescription, $testDescription);
+        $descriptionComponents = [...$describeDescriptions, $testDescription];
+
+        return sprintf(str_repeat('`%s` → ', count($describeDescriptions)).'%s', ...$descriptionComponents);
     }
 
     /**