feat: working tests; stuff

collector.v

@@ -52,14 +52,6 @@ pub fn (c &DefaultCollector) counter_increment(metric Metric) {
 	}
 }
 
-pub fn (c &DefaultCollector) counter_decrement(metric Metric) {
-	rlock c.counters {
-		entry := c.counter_indexes[metric.str()]
-
-		stdatomic.sub_u64(&c.counters[entry.index], 1)
-	}
-}
-
 pub fn (c &DefaultCollector) counter_get(metric Metric) ?u64 {
 	return rlock c.counters {
 		entry := c.counter_indexes[metric.str()] or { return none }
@@ -68,6 +60,18 @@ pub fn (c &DefaultCollector) counter_get(metric Metric) ?u64 {
 	}
 }
 
+pub fn (c &DefaultCollector) counters() []Metric {
+    mut metrics := []Metric{}
+
+    rlock c.counters {
+        for _, entry in c.counter_indexes {
+            metrics << entry.metric
+        }
+    }
+
+    return metrics
+}
+
 pub fn (mut c DefaultCollector) histogram_register(metric Metric) {
 	lock c.histograms {
 		c.histograms[metric.str()] = HistogramEntry{

counter_test.v

@@ -1,8 +1,14 @@
-import metrics
+module metrics
 
 fn test_counter_increment() {
-	mut m := new_default_metrics_collector()
-	m.counter_register(0, 'test')
+	mut m := new_default_collector()
+	m.counter_register(0, name: 'test')
 
-	m.counter_increment('test')
+	m.counter_increment(name: 'test')
+
+    assert m.counter_get(name: 'test')? == u64(1)
+
+	m.counter_increment(name: 'test')
+
+    assert m.counter_get(name: 'test')? == u64(2)
 }

metrics.v

@@ -19,11 +19,11 @@ pub fn (m &Metric) str() string {
 	return '$m.name{${m.labels.map(join_two_array(it)).join(',')}}'
 }
 
-interface MetricsCollector {
+pub interface MetricsCollector {
 	counter_register(value u64, metric Metric)
 	counter_increment(metric Metric)
-	counter_decrement(metric Metric)
 	counter_get(metric Metric) ?u64
+    counters() []Metric
 	histogram_register(metric Metric)
 	histogram_add(value f64, metric Metric)
 	histogram_get(metric Metric) ?

null.v

@@ -11,12 +11,12 @@ pub fn (c &NullCollector) counter_register(value u64, metric Metric) {}
 
 pub fn (c &NullCollector) counter_increment(metric Metric) {}
 
-pub fn (c &NullCollector) counter_decrement(metric Metric) {}
-
 pub fn (c &NullCollector) counter_get(metric Metric) ?u64 {
 	return none
 }
 
+pub fn (c &NullCollector) counters() []Metric { return [] }
+
 pub fn (c &NullCollector) histogram_register(metric Metric) {}
 
 pub fn (c &NullCollector) histogram_add(value f64, metric Metric) {}