test(ort-utils): Add missing tests for LocalFileStorage

Signed-off-by: Martin Nonnenmacher <martin.nonnenmacher@bosch.com>

utils/ort/src/funTest/kotlin/storage/LocalFileStorageFunTest.kt

@@ -69,6 +69,22 @@ class LocalFileStorageFunTest : WordSpec({
         }
     }
 
+    "exists()" should {
+        "return true if the file exists" {
+            storage { storage, directory ->
+                directory.resolve("existing-file").writeText("content")
+
+                storage.exists("existing-file") shouldBe true
+            }
+        }
+
+        "return false if the file does not exist" {
+            storage { storage, _ ->
+                storage.exists("file-does-not-exist") shouldBe false
+            }
+        }
+    }
+
     "read()" should {
         "succeed if the file exists" {
             storage { storage, directory ->
@@ -146,4 +162,23 @@ class LocalFileStorageFunTest : WordSpec({
             }
         }
     }
+
+    "delete()" should {
+        "return true if the file exists" {
+            storage { storage, directory ->
+                val file = directory.resolve("file")
+                file.writeText("content")
+
+                storage.delete("file") shouldBe true
+
+                file shouldNot exist()
+            }
+        }
+
+        "return false if the file does not exist" {
+            storage { storage, _ ->
+                storage.delete("file-does-not-exist") shouldBe false
+            }
+        }
+    }
 })