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diff --git a/src/test/kotlin/net/pterodactylus/sone/core/DefaultElementLoaderTest.kt b/src/test/kotlin/net/pterodactylus/sone/core/DefaultElementLoaderTest.kt
new file mode 100644
index 0000000..adc5bc9
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+++ b/src/test/kotlin/net/pterodactylus/sone/core/DefaultElementLoaderTest.kt
@@ -0,0 +1,81 @@
+package net.pterodactylus.sone.core
+
+import com.google.common.io.ByteStreams
+import com.google.common.io.Files
+import freenet.keys.FreenetURI
+import net.pterodactylus.sone.core.FreenetInterface.BackgroundFetchCallback
+import net.pterodactylus.sone.test.capture
+import net.pterodactylus.sone.test.mock
+import org.hamcrest.MatcherAssert
+import org.hamcrest.MatcherAssert.assertThat
+import org.hamcrest.Matchers
+import org.hamcrest.Matchers.`is`
+import org.hamcrest.Matchers.instanceOf
+import org.hamcrest.Matchers.nullValue
+import org.junit.Test
+import org.mockito.ArgumentMatchers.any
+import org.mockito.ArgumentMatchers.eq
+import org.mockito.Mockito.times
+import org.mockito.Mockito.verify
+import java.io.ByteArrayOutputStream
+
+/**
+ * Unit test for [DefaultElementLoaderTest].
+ */
+class DefaultElementLoaderTest {
+
+	companion object {
+		private const val IMAGE_ID = "KSK@gpl.png"
+	}
+
+	private val freenetInterface = mock<FreenetInterface>()
+	private val elementLoader = DefaultElementLoader(freenetInterface)
+	private val callback = capture<BackgroundFetchCallback>()
+
+	@Test
+	fun `image loader starts request for link that is not known`() {
+		elementLoader.loadElement(IMAGE_ID)
+		verify(freenetInterface).startFetch(eq(FreenetURI(IMAGE_ID)), any<BackgroundFetchCallback>())
+	}
+
+	@Test
+	fun `element loader only starts request once`() {
+		elementLoader.loadElement(IMAGE_ID)
+		elementLoader.loadElement(IMAGE_ID)
+		verify(freenetInterface).startFetch(eq(FreenetURI(IMAGE_ID)), any<BackgroundFetchCallback>())
+	}
+
+	@Test
+	fun `element loader returns loading element on first call`() {
+		assertThat(elementLoader.loadElement(IMAGE_ID).loading, `is`(true))
+	}
+
+	@Test
+	fun `image loader can load image`() {
+		elementLoader.loadElement(IMAGE_ID)
+		verify(freenetInterface).startFetch(eq(FreenetURI(IMAGE_ID)), callback.capture())
+	    callback.value.loaded(FreenetURI(IMAGE_ID), "image/png", read("/static/images/unknown-image-0.png"))
+		val linkedElement = elementLoader.loadElement(IMAGE_ID)
+		assertThat(linkedElement.link, `is`(IMAGE_ID))
+		assertThat(linkedElement.loading, `is`(false))
+		assertThat(linkedElement, instanceOf(LinkedImage::class.java))
+	}
+
+	@Test
+	fun `image can be loaded again after it failed`() {
+		elementLoader.loadElement(IMAGE_ID)
+		verify(freenetInterface).startFetch(eq(FreenetURI(IMAGE_ID)), callback.capture())
+		callback.value.failed(FreenetURI(IMAGE_ID))
+		elementLoader.loadElement(IMAGE_ID)
+		verify(freenetInterface, times(2)).startFetch(eq(FreenetURI(IMAGE_ID)), callback.capture())
+	}
+
+	private fun read(resource: String): ByteArray =
+			javaClass.getResourceAsStream(resource)?.use { input ->
+				ByteArrayOutputStream().use {
+					ByteStreams.copy(input, it)
+					it
+				}.toByteArray()
+			} ?: ByteArray(0)
+
+}