added small suite of tests to validate defaults.js using Jest - MR

__tests__/defaults.test.js

@@ -0,0 +1,88 @@
+import { defaultValues, createDefaultLevelsObject, createDefaultBranch, createDefaultBranchesObject } from '../app/utilities/defaults';
+
+describe('Default Branches Setup', () => {
+	it('is defaulted to first frame of video', () => {
+    	expect(defaultValues.time).toBe("00:00.01");
+  	});
+
+
+  	it('creates a branch properly', () => {
+  		const expectedBranch = {
+			start: "00:00.01",
+			end: "00:00.01",
+			enabled: true,
+			outcome: "0" 
+  		};
+
+    	expect(createDefaultBranch()).toEqual(expectedBranch);
+  	});
+
+  	it('creates an object with 6 emotion branches', () => {
+  		const defaultBranch = {
+  			start: "00:00.01",
+			end: "00:00.01",
+			enabled: true,
+			outcome: "0" 
+  		};
+
+  		const expected = {
+  			"Anger": defaultBranch,
+  			"Fear": defaultBranch,
+  			"Calm": defaultBranch,
+  			"Disgust": defaultBranch,
+  			"Contempt": defaultBranch,
+  			"Surprise": defaultBranch
+  		};
+
+    	expect(createDefaultBranchesObject()).toEqual(expected);
+  	});
+
+});
+
+describe('Default Levels Setup', () => {
+	it ('is expected to create an empty object', () => {
+		expect(createDefaultLevelsObject(0)).toEqual({});
+	});
+
+	it ('is expected to return empty object with negative input', () => {
+		expect(createDefaultLevelsObject(-3)).toEqual({});
+	});
+
+	it('is expected to create an object with one level', () => {
+		const oneLevel = {
+			1: {
+				level: 1,
+				start: "00:00.01",
+				end: "00:00.01",
+				branches: createDefaultBranchesObject()
+			}
+		};
+
+    	expect(createDefaultLevelsObject(1)).toEqual(oneLevel);
+  	});
+
+  	it('is expected to create an object with 3 levels', () => {
+		const threeLevels = {
+			1: {
+				level: 1,
+				start: "00:00.01",
+				end: "00:00.01",
+				branches: createDefaultBranchesObject()
+				},
+			2: {
+				level: 2,
+				start: "00:00.01",
+				end: "00:00.01",
+				branches: createDefaultBranchesObject()
+				},
+			3: {
+				level: 3,
+				start: "00:00.01",
+				end: "00:00.01",
+				branches: createDefaultBranchesObject()
+				}
+		};
+
+    	expect(createDefaultLevelsObject(3)).toEqual(threeLevels);
+  	});
+});

app/utilities/defaults.js

@@ -1,11 +1,4 @@
-export const defaultValues = {
-    time: "00:00.01",
-    enabled: true,
-    video: "src/main/resources/video/film_with_credits.m4v",
-    audio: "src/main/resources/audio/audio.wav"
-}
-
-const createDefaultBranch = () => {
+export const createDefaultBranch = () => {
     return {
         start: defaultValues.time,
         end: defaultValues.time,
@@ -14,7 +7,7 @@ const createDefaultBranch = () => {
     };
 }
 
-const createDefaultBranchesObject = () => {
+export const createDefaultBranchesObject = () => {
     const emotions = ["Anger", "Fear", "Calm", "Disgust", "Contempt", "Surprise"];
 
     let branches = {}
@@ -37,6 +30,9 @@ export const createDefaultLevelsObject = (numLevels) => {
     return populatedLevels;
 }
 
-export const allInputsValid = (state) => {
-
+export const defaultValues = {
+    time: "00:00.01",
+    enabled: true,
+    video: "src/main/resources/video/film_with_credits.m4v",
+    audio: "src/main/resources/audio/audio.wav"
 }

app/utilities/exportHelperFunctions.js

@@ -1,4 +1,8 @@
-const convertToMilliseconds = (value, numFrames) => {
+export const convertToMilliseconds = (value, numFrames) => {
+    if (Number(numFrames) <= 0) {
+        return "number of frames must be a positive integer";
+    }
+
     const valuesArray = value.split(".");
     const numMillisecondsPerFrame = 1000/Number(numFrames);
     const frame = Number(valuesArray[1])-1; // convert to a 0-indexed format
@@ -7,7 +11,7 @@ const convertToMilliseconds = (value, numFrames) => {
     return valuesArray[0] + "." + milliseconds;
 }
 
-const traverseAndConvertToMilliseconds = (state, numFrames) => {
+export const traverseAndConvertToMilliseconds = (state, numFrames) => {
     if( typeof state == "object" ) {
         Object.entries(state).forEach(([key, value]) => {
 
@@ -22,7 +26,7 @@ const traverseAndConvertToMilliseconds = (state, numFrames) => {
     }
 }
 
-const trimStateAndArrayify = (state) => {
+export const trimStateAndArrayify = (state) => {
     let levels = state.levels;
 
     Object.keys(levels).map( function(levelId,_) {
@@ -42,15 +46,15 @@ const trimStateAndArrayify = (state) => {
     state.displayvalue = undefined;
 }
 
-const arrayifyLevelsObject = (levels) => {
+export const arrayifyLevelsObject = (levels) => {
     let levelsArray = new Array(Object.keys(levels).length);
     Object.keys(levels).map((levelIndex,_) => {
         levelsArray[levelIndex-1] = levels[levelIndex];
     });
     return levelsArray;
 }
 
-const arrayifySlidesObject = (slides, slideType) => {
+export const arrayifySlidesObject = (slides, slideType) => {
     const slideKeys = Object.keys(slides).sort();
     let slideArray = [];
     for (let i=0; i<slideKeys.length;i++) {