Fix more risky tests.

These buffer starts offset the buffer closes that are in the test that
is being invoked with run() in the test method.

tests/TestCase/TestSuite/TestCaseTest.php

@@ -37,6 +37,7 @@ class TestCaseTest extends TestCase {
 	public function testAssertHtmlBasic() {
 		$test = new AssertHtmlTestCase('testAssertHtmlQuotes');
 		$result = $test->run();
+		ob_start();
 		$this->assertEquals(0, $result->errorCount());
 		$this->assertTrue($result->wasSuccessful());
 		$this->assertEquals(0, $result->failureCount());
@@ -128,6 +129,7 @@ class TestCaseTest extends TestCase {
 	public function testNumericValuesInExpectationForAssertHtml() {
 		$test = new AssertHtmlTestCase('testNumericValuesInExpectationForAssertHtml');
 		$result = $test->run();
+		ob_start();
 		$this->assertEquals(0, $result->errorCount());
 		$this->assertTrue($result->wasSuccessful());
 		$this->assertEquals(0, $result->failureCount());
@@ -141,12 +143,14 @@ class TestCaseTest extends TestCase {
 	public function testBadAssertHtml() {
 		$test = new AssertHtmlTestCase('testBadAssertHtml');
 		$result = $test->run();
+		ob_start();
 		$this->assertEquals(0, $result->errorCount());
 		$this->assertFalse($result->wasSuccessful());
 		$this->assertEquals(1, $result->failureCount());
 
 		$test = new AssertHtmlTestCase('testBadAssertHtml2');
 		$result = $test->run();
+		ob_start();
 		$this->assertEquals(0, $result->errorCount());
 		$this->assertFalse($result->wasSuccessful());
 		$this->assertEquals(1, $result->failureCount());
@@ -165,6 +169,8 @@ class TestCaseTest extends TestCase {
 		$test->fixtureManager = $manager;
 		$manager->expects($this->once())->method('loadSingle');
 		$result = $test->run();
+		ob_start();
+
 		$this->assertEquals(0, $result->errorCount());
 	}
 
@@ -176,10 +182,12 @@ class TestCaseTest extends TestCase {
 	public function testSkipIf() {
 		$test = new FixturizedTestCase('testSkipIfTrue');
 		$result = $test->run();
+		ob_start();
 		$this->assertEquals(1, $result->skippedCount());
 
 		$test = new FixturizedTestCase('testSkipIfFalse');
 		$result = $test->run();
+		ob_start();
 		$this->assertEquals(0, $result->skippedCount());
 	}