diff --git a/src/main/kotlin/com/featurevisor/testRunner/TestExecuter.kt b/src/main/kotlin/com/featurevisor/testRunner/TestExecuter.kt
index 401a77a..b2e9f69 100644
--- a/src/main/kotlin/com/featurevisor/testRunner/TestExecuter.kt
+++ b/src/main/kotlin/com/featurevisor/testRunner/TestExecuter.kt
@@ -17,7 +17,7 @@ data class TestProjectOption(
 fun startTest(option: TestProjectOption) {
     var hasError = false
     val folder = File("${option.projectRootPath}/${option.testDirPath}")
-    val listOfFiles = folder.listFiles()
+    val listOfFiles = folder.listFiles()?.sortedBy { it }
     var executionResult: ExecutionResult? = null
     val startTime = System.currentTimeMillis()
     var passedTestsCount = 0
@@ -103,11 +103,18 @@ private fun executeTest(filePath: String, dataFile: DataFile, option: TestProjec
 
         val testResult: TestResult = when (test) {
             is Test.Feature -> {
-                testFeature(test.value, dataFile = dataFile, option)
+                testFeature(
+                    testFeature = test.value,
+                    dataFile = dataFile,
+                    option = option
+                )
             }
 
             is Test.Segment -> {
-                testSegment(test.value, option.projectRootPath)
+                testSegment(
+                    testSegment = test.value,
+                    option = option
+                )
             }
         }
 
diff --git a/src/main/kotlin/com/featurevisor/testRunner/TestSegment.kt b/src/main/kotlin/com/featurevisor/testRunner/TestSegment.kt
index c26bfcc..a943a0d 100644
--- a/src/main/kotlin/com/featurevisor/testRunner/TestSegment.kt
+++ b/src/main/kotlin/com/featurevisor/testRunner/TestSegment.kt
@@ -6,9 +6,9 @@ import com.featurevisor.types.TestResultAssertion
 import com.featurevisor.types.TestResultAssertionError
 import com.featurevisor.types.TestSegment
 
-fun testSegment(test: TestSegment, segmentFilePath: String): TestResult {
+fun testSegment(testSegment: TestSegment, option: TestProjectOption): TestResult {
     val testStartTime = System.currentTimeMillis()
-    val segmentKey = test.key
+    val segmentKey = testSegment.key
 
     val testResult = TestResult(
         type = "segment",
@@ -19,22 +19,26 @@ fun testSegment(test: TestSegment, segmentFilePath: String): TestResult {
         assertions = mutableListOf()
     )
 
-    for (aIndex in 0 until test.assertions.size) {
-        val assertions = getSegmentAssertionsFromMatrix(aIndex, test.assertions[aIndex])
+    testSegment.assertions.forEachIndexed { index, segmentAssertion ->
+        val assertions = getSegmentAssertionsFromMatrix(index,segmentAssertion)
 
-        for (assertion in assertions) {
+        assertions.forEach {
             val assertionStartTime = System.currentTimeMillis()
 
             val testResultAssertion = TestResultAssertion(
-                description = assertion.description.orEmpty(),
+                description = it.description.orEmpty(),
                 duration = 0,
                 passed = true,
                 errors = mutableListOf()
             )
 
-            val yamlSegment = parseYamlSegment("$segmentFilePath/segments/$segmentKey.yml")
-            val expected = assertion.expectedToMatch
-            val actual = segmentIsMatched(yamlSegment!!, assertion.context)
+            if (option.assertionPattern.isNotEmpty() && !it.description.orEmpty().contains(option.assertionPattern)) {
+                return@forEach
+            }
+
+            val yamlSegment = parseYamlSegment("${option.projectRootPath}/segments/$segmentKey.yml")
+            val expected = it.expectedToMatch
+            val actual = segmentIsMatched(yamlSegment!!, it.context)
             val passed = actual == expected
 
             if (!passed) {