fix bug (that should have shown before) (#1136)

Signed-off-by: Gregor Zeitlinger <[email protected]>

Author: zeitlinger

CONTRIBUTING.md

@@ -16,3 +16,9 @@ Prometheus uses GitHub to manage reviews of pull requests.
 This repository uses [Google Java Format](https://github.com/google/google-java-format) to format the code.
 
 Run `./mvnw spotless:apply` to format the code (only changed files) before committing.
+
+## Running Tests
+
+If you're getting errors when running tests:
+
+- Make sure that the IDE uses only the "Maven Shade" dependency of "prometheus-metrics-exposition-formats" and the "prometheus-metrics-tracer*" dependencies.

prometheus-metrics-core/src/test/java/io/prometheus/metrics/core/metrics/CounterTest.java

@@ -113,7 +113,7 @@ public void testTotalStrippedFromName() {
         }) {
       Counter counter = Counter.builder().name(name).unit(Unit.SECONDS).build();
       Metrics.MetricFamily protobufData = new PrometheusProtobufWriter().convert(counter.collect());
-      assertThat(TextFormat.printer().shortDebugString(protobufData))
+      assertThat(TextFormat.printer().printToString(protobufData))
           .isEqualTo(
               "name: \"my_counter_seconds_total\" type: COUNTER metric { counter { value: 0.0 } }");
     }

prometheus-metrics-core/src/test/java/io/prometheus/metrics/core/metrics/HistogramTest.java

@@ -92,7 +92,7 @@ private void run() throws NoSuchFieldException, IllegalAccessException {
           new PrometheusProtobufWriter().convert(histogram.collect());
       String expectedWithMetadata =
           "name: \"test\" type: HISTOGRAM metric { histogram { " + expected + " } }";
-      assertThat(TextFormat.printer().shortDebugString(protobufData))
+      assertThat(TextFormat.printer().printToString(protobufData))
           .as("test \"" + name + "\" failed")
           .isEqualTo(expectedWithMetadata);
     }
@@ -941,7 +941,7 @@ public void testDefaults() throws IOException {
 
     // protobuf
     Metrics.MetricFamily protobufData = new PrometheusProtobufWriter().convert(snapshot);
-    assertThat(TextFormat.printer().shortDebugString(protobufData)).isEqualTo(expectedProtobuf);
+    assertThat(TextFormat.printer().printToString(protobufData)).isEqualTo(expectedProtobuf);
 
     // text
     ByteArrayOutputStream out = new ByteArrayOutputStream();

prometheus-metrics-core/src/test/java/io/prometheus/metrics/core/metrics/InfoTest.java

@@ -27,7 +27,7 @@ public void testInfoStrippedFromName() {
         Info info = Info.builder().name(name).labelNames(labelName).build();
         info.addLabelValues("value");
         Metrics.MetricFamily protobufData = new PrometheusProtobufWriter().convert(info.collect());
-        assertThat(TextFormat.printer().shortDebugString(protobufData))
+        assertThat(TextFormat.printer().printToString(protobufData))
             .isEqualTo(
                 "name: \"jvm_runtime_info\" type: GAUGE metric { label { name: \"my_key\" value: \"value\" } gauge { value: 1.0 } }");
       }

prometheus-metrics-core/src/test/java/io/prometheus/metrics/core/metrics/SummaryTest.java

@@ -128,7 +128,7 @@ public void testMaxAge() throws InterruptedException {
     assertThat(getQuantile(summary, 0.99, Labels.EMPTY)).isEqualTo(8.0); // From bucket 2.
     Thread.sleep(600);
     assertThat(getQuantile(summary, 0.99, Labels.EMPTY))
-        .isEqualTo(Double.NaN); // Bucket 1 again, now it is empty.
+        .isNaN(); // Bucket 1 again, now it is empty.
   }
 
   @Test

prometheus-metrics-exposition-formats/src/test/java/io/prometheus/metrics/expositionformats/ExpositionFormatsTest.java

@@ -2634,7 +2634,7 @@ private void assertPrometheusTextWithoutCreated(String expected, MetricSnapshot
   private void assertPrometheusProtobuf(String expected, MetricSnapshot snapshot) {
     PrometheusProtobufWriter writer = new PrometheusProtobufWriter();
     Metrics.MetricFamily protobufData = writer.convert(snapshot);
-    String actual = TextFormat.printer().shortDebugString(protobufData);
+    String actual = TextFormat.printer().printToString(protobufData);
     assertThat(actual).isEqualTo(expected);
   }
 }