Merge pull request #43 from buffcode/fix-invalid-bucket-name-tests

False positive tests for invalid histogram label name

Author: bracki

src/Prometheus/Histogram.php

@@ -39,8 +39,8 @@ public function __construct(Adapter $adapter, $namespace, $name, $help, $labels
                 );
             }
         }
-        foreach ($buckets as $bucket) {
-            if ($bucket == 'le') {
+        foreach ($labels as $label) {
+            if ($label === 'le') {
                 throw new \InvalidArgumentException("Histogram cannot have a label named 'le'.");
             }
         }

tests/Test/Prometheus/AbstractHistogramTest.php

@@ -374,6 +374,7 @@ public function itShouldProvideDefaultBuckets()
     /**
      * @test
      * @expectedException \InvalidArgumentException
+     * @expectedExceptionMessage Histogram buckets must be in increasing order
      */
     public function itShouldThrowAnExceptionWhenTheBucketSizesAreNotIncreasing()
     {
@@ -383,6 +384,7 @@ public function itShouldThrowAnExceptionWhenTheBucketSizesAreNotIncreasing()
     /**
      * @test
      * @expectedException \InvalidArgumentException
+     * @expectedExceptionMessage Histogram must have at least one bucket
      */
     public function itShouldThrowAnExceptionWhenThereIsLessThanOneBucket()
     {
@@ -392,15 +394,17 @@ public function itShouldThrowAnExceptionWhenThereIsLessThanOneBucket()
     /**
      * @test
      * @expectedException \InvalidArgumentException
+     * @expectedExceptionMessage Histogram cannot have a label named
      */
     public function itShouldThrowAnExceptionWhenThereIsALabelNamedLe()
     {
-        new Histogram($this->adapter, 'test', 'some_metric', 'this is for testing', array('le'), array());
+        new Histogram($this->adapter, 'test', 'some_metric', 'this is for testing', array('le'), array(1));
     }
 
     /**
      * @test
      * @expectedException \InvalidArgumentException
+     * @expectedExceptionMessage Invalid metric name
      */
     public function itShouldRejectInvalidMetricsNames()
     {
@@ -410,6 +414,7 @@ public function itShouldRejectInvalidMetricsNames()
     /**
      * @test
      * @expectedException \InvalidArgumentException
+     * @expectedExceptionMessage Invalid label name
      */
     public function itShouldRejectInvalidLabelNames()
     {