add unit tests for precision

Author: patinthehat

tests/CoverageCheckerTest.php

@@ -11,16 +11,33 @@ class CoverageCheckerTest extends TestCase
     /** @test */
     public function it_gets_the_coverage_percentage()
     {
-        $config = new Configuration(__DIR__ . '/data/coverage-clover.xml', false, false, false, 'element');
+        $config = new Configuration(__DIR__ . '/data/coverage-clover.xml', false, false, false, 'element', 4);
         $checker = new CoverageChecker(__DIR__ . '/data/coverage-clover.xml', $config);
 
         $this->assertEquals(89.8765, round($checker->getCoveragePercent(), 4));
     }
 
+    /** @test */
+    public function it_gets_the_coverage_percentage_using_the_specified_precision()
+    {
+        $map = [
+            0 => 90.0,
+            1 => 89.9,
+            2 => 89.88,
+        ];
+
+        foreach($map as $precision => $value) {
+            $config = new Configuration(__DIR__ . '/data/coverage-clover.xml', false, false, false, 'element', $precision);
+            $checker = new CoverageChecker(__DIR__ . '/data/coverage-clover.xml', $config);
+
+            $this->assertEquals($value, $checker->getCoveragePercent());
+        }
+    }
+
     /** @test */
     public function it_checks_for_a_minimum_coverage_percentage()
     {
-        $config = new Configuration(__DIR__ . '/data/coverage-clover.xml', false, false, false, 'element');
+        $config = new Configuration(__DIR__ . '/data/coverage-clover.xml', false, false, false, 'element', 4);
         $checker = new CoverageChecker(__DIR__ . '/data/coverage-clover.xml', $config);
 
         $this->assertTrue($checker->check(75));
@@ -30,7 +47,7 @@ public function it_checks_for_a_minimum_coverage_percentage()
     /** @test */
     public function it_gets_the_coverage_percentage_for_the_statement_metric()
     {
-        $config = new Configuration(__DIR__ . '/data/coverage-clover.xml', false, false, false, 'statement');
+        $config = new Configuration(__DIR__ . '/data/coverage-clover.xml', false, false, false, 'statement', 4);
         $checker = new CoverageChecker(__DIR__ . '/data/coverage-clover.xml', $config);
 
         $this->assertEquals(90.6279, round($checker->getCoveragePercent(), 4));
@@ -39,7 +56,7 @@ public function it_gets_the_coverage_percentage_for_the_statement_metric()
     /** @test */
     public function it_gets_the_coverage_percentage_for_the_method_metric()
     {
-        $config = new Configuration(__DIR__ . '/data/coverage-clover.xml', false, false, false, 'method');
+        $config = new Configuration(__DIR__ . '/data/coverage-clover.xml', false, false, false, 'method', 4);
         $checker = new CoverageChecker(__DIR__ . '/data/coverage-clover.xml', $config);
 
         $this->assertEquals(87.4439, $checker->getCoveragePercent());