feat: transpose-CSV

src/pages/tools/csv/transpose-csv/transpose-csv.service.test.ts

@@ -0,0 +1,89 @@
+import { expect, describe, it } from 'vitest';
+import { transposeCSV } from './service';
+import { InitialValuesType } from './types';
+
+describe('transposeCsv', () => {
+  it('should transpose a simple CSV', () => {
+    const options: InitialValuesType = {
+      separator: ',',
+      commentCharacter: '#',
+      customFill: false,
+      customFillValue: 'x',
+      quoteChar: '"'
+    };
+    const input = 'a,b,c\n1,2,3';
+    const expectedOutput = 'a,1\nb,2\nc,3';
+    const result = transposeCSV(input, options);
+    expect(result).toEqual(expectedOutput);
+  });
+
+  it('should handle an empty CSV', () => {
+    const options: InitialValuesType = {
+      separator: ',',
+      commentCharacter: '#',
+      customFill: false,
+      customFillValue: 'x',
+      quoteChar: '"'
+    };
+    const input = '';
+    const expectedOutput = '';
+    const result = transposeCSV(input, options);
+    expect(result).toEqual(expectedOutput);
+  });
+
+  it('should handle a single row CSV', () => {
+    const options: InitialValuesType = {
+      separator: ',',
+      commentCharacter: '#',
+      customFill: false,
+      customFillValue: 'x',
+      quoteChar: '"'
+    };
+    const input = 'a,b,c';
+    const expectedOutput = 'a\nb\nc';
+    const result = transposeCSV(input, options);
+    expect(result).toEqual(expectedOutput);
+  });
+
+  it('should handle a single column CSV', () => {
+    const options: InitialValuesType = {
+      separator: ',',
+      commentCharacter: '#',
+      customFill: false,
+      customFillValue: 'x',
+      quoteChar: '"'
+    };
+    const input = 'a\nb\nc';
+    const expectedOutput = 'a,b,c';
+    const result = transposeCSV(input, options);
+    expect(result).toEqual(expectedOutput);
+  });
+
+  it('should handle uneven rows in the CSV', () => {
+    const options: InitialValuesType = {
+      separator: ',',
+      commentCharacter: '#',
+      customFill: true,
+      customFillValue: 'x',
+      quoteChar: '"'
+    };
+    const input = 'a,b\n1,2,3';
+    const expectedOutput = 'a,1\nb,2\nx,3';
+    const result = transposeCSV(input, options);
+    expect(result).toEqual(expectedOutput);
+  });
+
+  it('should skip comment in  the CSV', () => {
+    const options: InitialValuesType = {
+      separator: ',',
+      commentCharacter: '#',
+      customFill: true,
+      customFillValue: 'x',
+      quoteChar: '"'
+    };
+    const input = 'a,b\n1,2\n#c,3\nd,4';
+    const expectedOutput = 'a,1,d\nb,2,4';
+    const result = transposeCSV(input, options);
+    expect(result).toEqual(expectedOutput);
+  });
+});