diff --git a/src/jira-related/jira-service-functions.ts b/src/jira-related/jira-service-functions.ts
index 930fa7b..bcb0af4 100644
--- a/src/jira-related/jira-service-functions.ts
+++ b/src/jira-related/jira-service-functions.ts
@@ -44,7 +44,7 @@ function itemIsTransitionToInProgress(item: any): boolean {
     return itemComesFromToDo(item) && itemGoesToInProgress(item)
 }
 
-interface StateWithDate {
+export interface StateWithDate {
     stateName: string,
     stateReachedDate: Date
 }
diff --git a/src/plotting/plotting-functions.test.ts b/src/plotting/plotting-functions.test.ts
index 8f82793..897e28c 100644
--- a/src/plotting/plotting-functions.test.ts
+++ b/src/plotting/plotting-functions.test.ts
@@ -1,8 +1,10 @@
 import { describe, expect, test } from "bun:test";
-import { createPlotDataForPercentages as createPlotDataForPercentages, createPlotDataFromCycleTimeHistogram, valuesSummedUp } from "./plotting-functions";
+import { createPlotDataForCfd, createPlotDataForPercentages as createPlotDataForPercentages, createPlotDataFromCycleTimeHistogram, valuesSummedUp } from "./plotting-functions";
 import { CycleTimeHistogramEntry } from "../core/core-functions";
 import * as _ from "lodash"
 import { Plot } from "nodeplotlib";
+import { Issue } from "../core/core-interfaces";
+import { StateWithDate } from "../jira-related/jira-service-functions";
 
 describe("createPlotDataFromCycleTimeHistogram()", () => {
     const input: CycleTimeHistogramEntry[] = [{
@@ -82,3 +84,12 @@ describe("createPlotDataForPercentages()", () => {
     })
 })
 
+describe("createDataForCfd()", () => { 
+    const issues: Issue[] = []
+    const statesWithDates: StateWithDate[] = []
+    const result = createPlotDataForCfd(issues, statesWithDates)
+
+    test("it should have '2023-10-30' as the first x value", () => {
+        expect(result.x![0]).toEqual("2023-10-30")
+    })
+})
\ No newline at end of file
diff --git a/src/plotting/plotting-functions.ts b/src/plotting/plotting-functions.ts
index f89655b..27975dc 100644
--- a/src/plotting/plotting-functions.ts
+++ b/src/plotting/plotting-functions.ts
@@ -2,6 +2,8 @@ import * as _ from "lodash";
 import { CycleTimeHistogramEntry } from "../core/core-functions";
 import { plot, Plot, Layout } from "nodeplotlib"
 import { cumsum } from "mathjs";
+import { StateWithDate } from "../jira-related/jira-service-functions";
+import { Issue } from "../core/core-interfaces";
 
 export function createPlotDataFromCycleTimeHistogram(cycleTimeHistogram: CycleTimeHistogramEntry[]): Plot {
     const xValues = cycleTimeHistogram.map(entry => entry.numberOfDays)
@@ -32,4 +34,13 @@ export function createPlotDataForPercentages(cycleTimeHistogram: CycleTimeHistog
 export function valuesSummedUp(values: number[]): number[] {
     const cumulativeSum = cumsum(values)
     return <number[]>cumsum(values)
+}
+
+export function createPlotDataForCfd(issues: Issue[], statesWithDates: StateWithDate[]): Plot {
+    const result: Plot = {
+        x: [],
+        y: []
+    }
+
+    return result
 }
\ No newline at end of file