1 files changed, 35 insertions, 0 deletions
diff --git a/frontend/src/util/date-time.test.js b/frontend/src/util/date-time.test.js
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+++ b/frontend/src/util/date-time.test.js
@@ -0,0 +1,35 @@
+import { convertSecondsToFormattedTime, parseDateTime } from "./date-time";
+
+describe("date-time parsing", () => {
+  it("reads components properly", () => {
+    const dateString = "2017-09-27T20:55:01";
+    const parsedDate = parseDateTime(dateString);
+
+    expect(parsedDate.getUTCFullYear()).toEqual(2017);
+    expect(parsedDate.getUTCMonth()).toEqual(8);
+    expect(parsedDate.getUTCDate()).toEqual(27);
+    expect(parsedDate.getUTCHours()).toEqual(20);
+    expect(parsedDate.getUTCMinutes()).toEqual(55);
+    expect(parsedDate.getUTCSeconds()).toEqual(1);
+  });
+});
+
+describe("tick formatting", () => {
+  it("returns '0s' for numbers <= 0", () => {
+    expect(convertSecondsToFormattedTime(-1)).toEqual("0s");
+    expect(convertSecondsToFormattedTime(0)).toEqual("0s");
+  });
+  it("returns only seconds for values under a minute", () => {
+    expect(convertSecondsToFormattedTime(1)).toEqual("1s");
+    expect(convertSecondsToFormattedTime(59)).toEqual("59s");
+  });
+  it("returns seconds and minutes for values under an hour", () => {
+    expect(convertSecondsToFormattedTime(60)).toEqual("1m00s");
+    expect(convertSecondsToFormattedTime(61)).toEqual("1m01s");
+    expect(convertSecondsToFormattedTime(3599)).toEqual("59m59s");
+  });
+  it("returns full time for values over an hour", () => {
+    expect(convertSecondsToFormattedTime(3600)).toEqual("1h00m00s");
+    expect(convertSecondsToFormattedTime(3601)).toEqual("1h00m01s");
+  });
+});