diff --git a/tests/testthat/_snaps/fit_OSLLifeTimes.md b/tests/testthat/_snaps/fit_OSLLifeTimes.md
new file mode 100644
index 000000000..5f3abe285
--- /dev/null
+++ b/tests/testthat/_snaps/fit_OSLLifeTimes.md
@@ -0,0 +1,424 @@
+# check functionality
+
+    {
+      "type": "S4",
+      "attributes": {
+        "data": {
+          "type": "list",
+          "attributes": {
+            "names": {
+              "type": "character",
+              "attributes": {},
+              "value": ["data", "start_matrix", "total_counts"]
+            }
+          },
+          "value": [
+            {
+              "type": "list",
+              "attributes": {},
+              "value": [
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [21187374624.91338]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [87.91459512]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [97105538.01901485]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [3.1679345]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [218.18914819]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [27.75139291]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [0]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [1.19644063e-143]
+                }
+              ]
+            },
+            {
+              "type": "double",
+              "attributes": {
+                "dim": {
+                  "type": "integer",
+                  "attributes": {},
+                  "value": [1, 2]
+                },
+                "dimnames": {
+                  "type": "list",
+                  "attributes": {},
+                  "value": [
+                    {
+                      "type": "character",
+                      "attributes": {},
+                      "value": ["Comp.1"]
+                    },
+                    {
+                      "type": "character",
+                      "attributes": {},
+                      "value": ["A", "tau"]
+                    }
+                  ]
+                }
+              },
+              "value": [1891061285548.3481, 1192.89302733]
+            },
+            {
+              "type": "double",
+              "attributes": {},
+              "value": [38310000000000]
+            }
+          ]
+        },
+        "originator": {
+          "type": "character",
+          "attributes": {},
+          "value": ["fit_OSLLifeTimes"]
+        },
+        "info": {
+          "type": "list",
+          "attributes": {
+            "names": {
+              "type": "character",
+              "attributes": {},
+              "value": []
+            }
+          },
+          "value": []
+        },
+        ".uid": {
+          "type": "character",
+          "attributes": {},
+          "value": [null]
+        },
+        ".pid": {
+          "type": "character",
+          "attributes": {},
+          "value": [null]
+        }
+      },
+      "value": {
+        "class": "RLum.Results",
+        "package": "Luminescence"
+      }
+    }
+
+---
+
+    {
+      "type": "S4",
+      "attributes": {
+        "data": {
+          "type": "list",
+          "attributes": {
+            "names": {
+              "type": "character",
+              "attributes": {},
+              "value": ["data", "start_matrix", "total_counts"]
+            }
+          },
+          "value": [
+            {
+              "type": "list",
+              "attributes": {},
+              "value": [
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [21187380528.417492]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [87.91437058]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [21187374615.080013]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [87.91459548]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [97105552.15831606]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [3.16791835]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [97105537.39146955]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [3.1679345]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [218.18917721]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [27.75146355]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [218.1891495]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [27.75139309]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [0]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [1.19474683e-143]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [0]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [1.19643624e-143]
+                }
+              ]
+            },
+            {
+              "type": "double",
+              "attributes": {
+                "dim": {
+                  "type": "integer",
+                  "attributes": {},
+                  "value": [2, 2]
+                },
+                "dimnames": {
+                  "type": "list",
+                  "attributes": {},
+                  "value": [
+                    {
+                      "type": "character",
+                      "attributes": {},
+                      "value": ["Comp.1", "Comp.1"]
+                    },
+                    {
+                      "type": "character",
+                      "attributes": {},
+                      "value": ["A", "tau"]
+                    }
+                  ]
+                }
+              },
+              "value": [2032205010479.8926, 2032643529227.3938, 110.38004153, 114.5974491]
+            },
+            {
+              "type": "double",
+              "attributes": {},
+              "value": [38310000000000, 38310000000000]
+            }
+          ]
+        },
+        "originator": {
+          "type": "character",
+          "attributes": {},
+          "value": ["fit_OSLLifeTimes"]
+        },
+        "info": {
+          "type": "list",
+          "attributes": {
+            "names": {
+              "type": "character",
+              "attributes": {},
+              "value": []
+            }
+          },
+          "value": []
+        },
+        ".uid": {
+          "type": "character",
+          "attributes": {},
+          "value": [null]
+        },
+        ".pid": {
+          "type": "character",
+          "attributes": {},
+          "value": [null]
+        }
+      },
+      "value": {
+        "class": "RLum.Results",
+        "package": "Luminescence"
+      }
+    }
+
+---
+
+    {
+      "type": "S4",
+      "attributes": {
+        "data": {
+          "type": "list",
+          "attributes": {
+            "names": {
+              "type": "character",
+              "attributes": {},
+              "value": ["data", "start_matrix", "total_counts"]
+            }
+          },
+          "value": [
+            {
+              "type": "list",
+              "attributes": {},
+              "value": [
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [31649193808.64809]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [3.19735974]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [733990387.37895739]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [0.24304722]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [43.11935736]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [13.15530275]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [1.34471628e-102]
+                },
+                {
+                  "type": "double",
+                  "attributes": {},
+                  "value": [8.14487851e-29]
+                }
+              ]
+            },
+            {
+              "type": "double",
+              "attributes": {
+                "dim": {
+                  "type": "integer",
+                  "attributes": {},
+                  "value": [1, 2]
+                },
+                "dimnames": {
+                  "type": "list",
+                  "attributes": {},
+                  "value": [
+                    {
+                      "type": "character",
+                      "attributes": {},
+                      "value": ["Comp.1"]
+                    },
+                    {
+                      "type": "character",
+                      "attributes": {},
+                      "value": ["A", "tau"]
+                    }
+                  ]
+                }
+              },
+              "value": [3163386906904.6982, 3.20602699]
+            },
+            {
+              "type": "double",
+              "attributes": {},
+              "value": [4707500000000]
+            }
+          ]
+        },
+        "originator": {
+          "type": "character",
+          "attributes": {},
+          "value": ["fit_OSLLifeTimes"]
+        },
+        "info": {
+          "type": "list",
+          "attributes": {
+            "names": {
+              "type": "character",
+              "attributes": {},
+              "value": []
+            }
+          },
+          "value": []
+        },
+        ".uid": {
+          "type": "character",
+          "attributes": {},
+          "value": [null]
+        },
+        ".pid": {
+          "type": "character",
+          "attributes": {},
+          "value": [null]
+        }
+      },
+      "value": {
+        "class": "RLum.Results",
+        "package": "Luminescence"
+      }
+    }
+
diff --git a/tests/testthat/setup.R b/tests/testthat/setup.R
index 55bcf0e0e..2f3123292 100644
--- a/tests/testthat/setup.R
+++ b/tests/testthat/setup.R
@@ -52,6 +52,11 @@ expect_snapshot_RLum <- function(object, ...) {
     }
 
   }
+  if ("info" %in% slotNames(object)) {
+    if ("call" %in% names(object@info)) {
+      object@info$call <- NULL
+    }
+  }
   if ("records" %in% slotNames(object)) {
     for (idx in seq_along(object@records)) {
       object@records[[idx]]@info$args <- NULL
diff --git a/tests/testthat/test_fit_OSLLifeTimes.R b/tests/testthat/test_fit_OSLLifeTimes.R
index 7da56cf04..f100af948 100644
--- a/tests/testthat/test_fit_OSLLifeTimes.R
+++ b/tests/testthat/test_fit_OSLLifeTimes.R
@@ -73,19 +73,19 @@ test_that("check functionality", {
   ##simple run
   set.seed(1)
   SW({
-  expect_s4_class(object = fit_OSLLifeTimes(
+  expect_snapshot_RLum(fit_OSLLifeTimes(
     object = ExampleData.TR_OSL,
     plot = FALSE,
     method_control = list(DEoptim.itermax = 15),
-    n.components = 1), class = "RLum.Results")
+    n.components = 1))
 
   ##simple list
   temp_list <- list(ExampleData.TR_OSL, ExampleData.TR_OSL)
-  expect_s4_class(object = fit_OSLLifeTimes(
+  expect_snapshot_RLum(fit_OSLLifeTimes(
     object = temp_list,
     log = "x",
     method_control = list(DEoptim.itermax = 25),
-    n.components = 1), class = "RLum.Results")
+    n.components = 1))
   })
 
   ## RLum.Analysis
@@ -103,14 +103,14 @@ test_that("check functionality", {
 
   ## simple data.frame
   SW({
-  expect_s4_class(fit_OSLLifeTimes(
+  expect_snapshot_RLum(fit_OSLLifeTimes(
     object = as.data.frame(temp_mat),
     method_control = list(seed = 1, weights = FALSE,
                           DEoptim.itermax = 50),
     signal.range = 3,
     verbose = TRUE,
     plot = FALSE,
-    n.components = NULL), class = "RLum.Results")
+    n.components = NULL))
   })
 
   ##test arguments