diff -r d73537b925af -r 12b898531d1a src/test/kotlin/de/uapcore/lightpit/vcs/HgConnectorTest.kt
--- a/src/test/kotlin/de/uapcore/lightpit/vcs/HgConnectorTest.kt	Mon Jul 17 14:45:42 2023 +0200
+++ b/src/test/kotlin/de/uapcore/lightpit/vcs/HgConnectorTest.kt	Tue Jul 18 18:05:49 2023 +0200
@@ -26,13 +26,33 @@
 
 package de.uapcore.lightpit.vcs
 
-import kotlin.test.Test
-import kotlin.test.assertFalse
-import kotlin.test.assertTrue
+import kotlin.io.path.Path
+import kotlin.io.path.absolutePathString
+import kotlin.io.path.exists
+import kotlin.io.path.moveTo
+import kotlin.test.*
 
 class HgConnectorTest {
 
     private val testee = HgConnector("/usr/bin/hg")
+    private val testRepoPath = Path("src/test/resources/test-repo")
+
+    @BeforeTest
+    fun prepareTestRepo() {
+        assertTrue(testRepoPath.exists(), "Test must be run from the project root.")
+        val hg = testRepoPath.resolve("hg")
+        val dothg = testRepoPath.resolve(".hg")
+        assertTrue(hg.exists(), "hg dir not found, maybe a previous execution did not terminated cleanly.")
+        assertFalse(dothg.exists(), ".hg dir found, maybe a previous execution did not terminated cleanly.")
+        hg.moveTo(dothg)
+    }
+
+    @AfterTest
+    fun cleanup() {
+        val hg = testRepoPath.resolve("hg")
+        val dothg = testRepoPath.resolve(".hg")
+        dothg.moveTo(hg)
+    }
 
     @Test
     fun checkAvailability() {
@@ -43,4 +63,25 @@
     fun checkAvailabilityFalse() {
         assertFalse(HgConnector("/bin/false").checkAvailability())
     }
+
+    @Test
+    fun readCommitLog() {
+        val result = testee.readCommitLog(testRepoPath.absolutePathString())
+        assertTrue(result is VcsConnectorResult.Success)
+
+        assertContentEquals(
+            listOf(
+                CommitRef("cf9f5982ddeb28c7f695dc547fe73abf5460016f", 50, "here we fix #50"),
+                CommitRef("cf9f5982ddeb28c7f695dc547fe73abf5460016f", 30, "here we fix #50"),
+                CommitRef(
+                    "ed7134e5f4ce278c4f62798fb9f96129be2b132b",
+                    1337,
+                    "commit with a #non-ref, relates to #wrong ref but still fixes #1337"
+                ),
+                CommitRef("74d770da3c80c0c3fc1fb7e44fb710d665127dfe", 47, "a change with commitref in body"),
+                CommitRef("9a14e5628bdf2d578f3385d78022ddcaf23d1abb", 47, "add test file - relates to #47")
+            ),
+            result.content
+        )
+    }
 }
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