initial import for Open Source 🎉

static/js/services/datafile/datafile.service.impl.spec.ts

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+import { DataFileServiceImpl } from './datafile.service.impl';
+import { Mock } from 'ts-mocks';
+import Spy = jasmine.Spy;
+
+
+describe("DataFileServiceImpl", () => {
+  var dataFileServiceImpl: DataFileServiceImpl;
+  var fileReaderMock: Mock<FileReader>;
+  var fileReader: FileReader;
+
+  beforeEach(() => {
+    fileReaderMock = new Mock<FileReader>();
+    fileReader = fileReaderMock.Object;
+    dataFileServiceImpl = new DataFileServiceImpl(() => fileReader);
+  });
+
+  describe("blobToString", () => {
+    var data: any;
+    var blob: Blob;
+
+    beforeEach(() => {
+      data = {hello: "world"};
+      blob = new Blob([JSON.stringify(data)]);
+
+      fileReaderMock.setup(mock => mock.readAsText).is((blob: Blob) => {
+        fileReaderMock.Object.onload(<any>{target: {result: data}});
+      });
+    });
+
+    it("calls file reader to read given blob", (done) => {
+      dataFileServiceImpl.blobToString(blob, (result) => {
+        expect((<Spy>fileReader.readAsText).calls.argsFor(0)[0]).toEqual(blob);
+        done();
+      });
+    });
+
+    it("calls given callback with null if file reader errors", (done) => {
+      fileReaderMock.setup(mock => mock.readAsText).is((blob: Blob) => {
+        fileReaderMock.Object.onerror(new Mock<ProgressEvent<FileReader>>().Object);
+      });
+
+      dataFileServiceImpl.blobToString(blob, (result) => {
+        expect(result).toBe(null);
+        done();
+      });
+    });
+
+    it("calls given callback with null if file reader aborts", (done) => {
+      fileReaderMock.setup(mock => mock.readAsText).is((blob: Blob) => {
+        fileReaderMock.Object.onabort(new Mock<ProgressEvent<FileReader>>().Object);
+      });
+
+      dataFileServiceImpl.blobToString(blob, (result) => {
+        expect(result).toBe(null);
+        done();
+      });
+    });
+
+    it("calls given callback with result when file reader successfully loads", (done) => {
+      dataFileServiceImpl.blobToString(blob, (result) => {
+        expect(result).toBe(data);
+        done();
+      });
+    });
+  });
+
+  describe("arrayToString", () => {
+    var blob: Blob;
+    var data: any;
+
+    beforeEach(() => {
+      data = JSON.stringify({hello: "world"});
+      blob = new Blob([data], {type: 'application/octet-binary'});
+
+      fileReaderMock.setup(mock => mock.readAsText).is((blob: Blob) => {
+        fileReaderMock.Object.onload(<any>{target: {result: data}});
+      });
+    });
+
+    it("calls file reader to read blob created from given buffer", (done) => {
+      dataFileServiceImpl.arrayToString(data, (result) => {
+        expect((<Spy>fileReader.readAsText).calls.argsFor(0)[0]).toEqual(blob);
+        done();
+      });
+    });
+
+    it("calls given callback with null if file reader errors", (done) => {
+      fileReaderMock.setup(mock => mock.readAsText).is((blob: Blob) => {
+        fileReaderMock.Object.onerror(new Mock<ProgressEvent<FileReader>>().Object);
+      });
+
+      dataFileServiceImpl.arrayToString(data, (result) => {
+        expect(result).toEqual(null);
+        done();
+      });
+    });
+
+    it("calls given callback with null if file reader aborts", (done) => {
+      fileReaderMock.setup(mock => mock.readAsText).is((blob: Blob) => {
+        fileReaderMock.Object.onabort(new Mock<ProgressEvent<FileReader>>().Object);
+      });
+
+      dataFileServiceImpl.arrayToString(data, (result) => {
+        expect(result).toEqual(null);
+        done();
+      });
+    });
+
+    it("calls given callback with result when file reader successfully loads", (done) => {
+      dataFileServiceImpl.arrayToString(data, (result) => {
+        expect(result).toEqual(data);
+        done();
+      });
+    });
+  });
+
+  describe("readDataArrayAsPossibleArchive", () => {
+    // TODO
+  });
+
+  describe("downloadDataFileAsArrayBuffer", () => {
+    // TODO
+  });
+});