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diff --git a/src/test/kotlin/net/pterodactylus/sone/template/HistogramRendererTest.kt b/src/test/kotlin/net/pterodactylus/sone/template/HistogramRendererTest.kt
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+++ b/src/test/kotlin/net/pterodactylus/sone/template/HistogramRendererTest.kt
@@ -0,0 +1,204 @@
+/**
+ * Sone - HistogramRendererTest.kt - Copyright © 2019 David ‘Bombe’ Roden
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.pterodactylus.sone.template
+
+import com.codahale.metrics.*
+import net.pterodactylus.sone.freenet.*
+import net.pterodactylus.util.template.*
+import org.hamcrest.MatcherAssert.*
+import org.hamcrest.Matchers.*
+import org.jsoup.*
+import org.jsoup.nodes.*
+import org.junit.*
+import java.util.*
+
+/**
+ * Unit test for [HistogramRenderer].
+ */
+class HistogramRendererTest {
+
+	private val translation = object : Translation {
+		override val currentLocale = Locale.ENGLISH
+		override fun translate(key: String) = "Metric Name".takeIf { key == "Page.Metrics.TestHistogram.Title" } ?: ""
+	}
+	private val metricRenderer = HistogramRenderer()
+	private val templateContext = TemplateContext().apply {
+		addFilter("html", HtmlFilter())
+		addFilter("duration", DurationFormatFilter())
+		addFilter("l10n", L10nFilter(translation))
+	}
+
+	@Test
+	fun `histogram is rendered as table row`() {
+		createAndVerifyTableRow {
+			assertThat(it.nodeName(), equalTo("tr"))
+		}
+	}
+
+	@Test
+	fun `histogram has eleven columns`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td"), hasSize(11))
+		}
+	}
+
+	@Test
+	fun `first column contains translated metric name`() {
+		createAndVerifyTableRow(mapOf("name" to "test.histogram")) {
+			assertThat(it.getElementsByTag("td")[0].text(), equalTo("Metric Name"))
+		}
+	}
+
+	@Test
+	fun `second column is numeric`() {
+		verifyColumnIsNumeric(1)
+	}
+
+	@Test
+	fun `second column contains count`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[1].text(), equalTo("2001"))
+		}
+	}
+
+	@Test
+	fun `third column is numeric`() {
+		verifyColumnIsNumeric(2)
+	}
+
+	@Test
+	fun `third column contains min value`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[2].text(), equalTo("2.0ms"))
+		}
+	}
+
+	@Test
+	fun `fourth column is numeric`() {
+		verifyColumnIsNumeric(3)
+	}
+
+	@Test
+	fun `fourth column contains max value`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[3].text(), equalTo("998.0ms"))
+		}
+	}
+
+	@Test
+	fun `fifth column is numeric`() {
+		verifyColumnIsNumeric(4)
+	}
+
+	@Test
+	fun `fifth column contains mean value`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[4].text(), equalTo("492.7ms"))
+		}
+	}
+
+	@Test
+	fun `sixth column is numeric`() {
+		verifyColumnIsNumeric(5)
+	}
+
+	@Test
+	fun `sixth column contains median value`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[5].text(), equalTo("483.6ms"))
+		}
+	}
+
+	@Test
+	fun `seventh column is numeric`() {
+		verifyColumnIsNumeric(6)
+	}
+
+	@Test
+	fun `seventh column contains 75th percentile`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[6].text(), equalTo("740.9ms"))
+		}
+	}
+
+	@Test
+	fun `eighth column is numeric`() {
+		verifyColumnIsNumeric(7)
+	}
+
+	@Test
+	fun `eighth column contains 95th percentile`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[7].text(), equalTo("940.9ms"))
+		}
+	}
+
+	@Test
+	fun `ninth column is numeric`() {
+		verifyColumnIsNumeric(8)
+	}
+
+	@Test
+	fun `ninth column contains 98th percentile`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[8].text(), equalTo("975.6ms"))
+		}
+	}
+
+	@Test
+	fun `tenth column is numeric`() {
+		verifyColumnIsNumeric(9)
+	}
+
+	@Test
+	fun `tenth column contains 99th percentile`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[9].text(), equalTo("991.6ms"))
+		}
+	}
+
+	@Test
+	fun `eleventh column is numeric`() {
+		verifyColumnIsNumeric(10)
+	}
+
+	@Test
+	fun `eleventh column contains 99,9th percentile`() {
+		createAndVerifyTableRow {
+			assertThat(it.getElementsByTag("td")[10].text(), equalTo("998.0ms"))
+		}
+	}
+
+	private fun createAndVerifyTableRow(parameters: Map<String, Any?>? = null, verify: (Element) -> Unit) =
+			metricRenderer.format(templateContext, histogram, parameters)
+					.let { "<table id='t'>$it</table>" }
+					.let(Jsoup::parseBodyFragment)
+					.getElementById("t").child(0).child(0)
+					.let(verify)
+
+	private fun verifyColumnIsNumeric(column: Int) =
+			createAndVerifyTableRow {
+				assertThat(it.getElementsByTag("td")[column].classNames(), hasItem("numeric"))
+			}
+
+}
+
+private val random = Random(1)
+private val histogram = MetricRegistry().histogram("test.histogram") { Histogram(SlidingWindowReservoir(1028)) }.apply {
+	(0..2000).map { random.nextInt(1_000_000) }.forEach(this::update)
+}