[9.x] Adds expectsOutputToContain to the PendingCommand.

src/Illuminate/Foundation/Testing/Concerns/InteractsWithConsole.php

@@ -22,6 +22,13 @@ trait InteractsWithConsole
      */
     public $expectedOutput = [];
 
+    /**
+     * All of the expected text to be present on the output.
+     *
+     * @var array
+     */
+    public $expectedOutputSubstrings = [];
+
     /**
      * All of the output lines that aren't expected to be displayed.
      *

src/Illuminate/Testing/PendingCommand.php

@@ -154,6 +154,19 @@ public function doesntExpectOutput($output)
         return $this;
     }
 
+    /**
+     * Specify that the given string should be contained in the command output.
+     *
+     * @param  string  $string
+     * @return $this
+     */
+    public function expectsOutputToContain($string)
+    {
+        $this->test->expectedOutputSubstrings[] = $string;
+
+        return $this;
+    }
+
     /**
      * Specify a table that should be printed when the command runs.
      *
@@ -311,6 +324,10 @@ protected function verifyExpectations()
             $this->test->fail('Output "'.Arr::first($this->test->expectedOutput).'" was not printed.');
         }
 
+        if (count($this->test->expectedOutputSubstrings)) {
+            $this->test->fail('Output does not contain "'.Arr::first($this->test->expectedOutputSubstrings).'".');
+        }
+
         if ($output = array_search(true, $this->test->unexpectedOutput)) {
             $this->test->fail('Output "'.$output.'" was printed.');
         }
@@ -373,6 +390,14 @@ private function createABufferedOutputMock()
                 });
         }
 
+        foreach ($this->test->expectedOutputSubstrings as $i => $text) {
+            $mock->shouldReceive('doWrite')
+                ->withArgs(fn ($output) => str_contains($output, $text))
+                ->andReturnUsing(function () use ($i) {
+                    unset($this->test->expectedOutputSubstrings[$i]);
+                });
+        }
+
         foreach ($this->test->unexpectedOutput as $output => $displayed) {
             $mock->shouldReceive('doWrite')
                 ->ordered()
@@ -393,6 +418,7 @@ private function createABufferedOutputMock()
     protected function flushExpectations()
     {
         $this->test->expectedOutput = [];
+        $this->test->expectedOutputSubstrings = [];
         $this->test->unexpectedOutput = [];
         $this->test->expectedTables = [];
         $this->test->expectedQuestions = [];

tests/Integration/Testing/ArtisanCommandTest.php

@@ -32,6 +32,10 @@ protected function setUp(): void
             $this->line($this->ask('What?'));
             $this->line($this->ask('Huh?'));
         });
+
+        Artisan::command('contains', function () {
+            $this->line('My name is Taylor Otwell');
+        });
     }
 
     public function test_console_command_that_passes()
@@ -110,6 +114,25 @@ public function test_console_command_that_fails_from_unordered_output()
         });
     }
 
+    public function test_console_command_that_passes_if_the_output_contains()
+    {
+        $this->artisan('contains')
+             ->expectsOutputToContain('Taylor Otwell')
+             ->assertExitCode(0);
+    }
+
+    public function test_console_command_that_fails_if_the_output_does_not_contain()
+    {
+        $this->expectException(AssertionFailedError::class);
+        $this->expectExceptionMessage('Output does not contain "Otwell Taylor".');
+
+        $this->ignoringMockOnceExceptions(function () {
+            $this->artisan('contains')
+                 ->expectsOutputToContain('Otwell Taylor')
+                 ->assertExitCode(0);
+        });
+    }
+
     /**
      * Don't allow Mockery's InvalidCountException to be reported. Mocks setup
      * in PendingCommand cause PHPUnit tearDown() to later throw the exception.