test(formatDataForRequest): improved test coverage

src/test/utils/formatDataForRequest.spec.ts

@@ -0,0 +1,56 @@
+import { formatDataForRequest } from '../../utils/formatDataForRequest'
+
+describe('formatDataForRequest', () => {
+  const testTable = 'sometable'
+
+  it('should', () => {
+    const testTableWithNullVars = {
+      [testTable]: [
+        { var1: 'string', var2: 232, nullvar: 'A' },
+        { var1: 'string', var2: 232, nullvar: 'B' },
+        { var1: 'string', var2: 232, nullvar: '_' },
+        { var1: 'string', var2: 232, nullvar: 0 },
+        { var1: 'string', var2: 232, nullvar: 'z' },
+        { var1: 'string', var2: 232, nullvar: null }
+      ],
+      [`$${testTable}`]: { formats: { var1: '$char12.', nullvar: 'best.' } }
+    }
+
+    const expectedOutput = {
+      sasjs1data: `var1:$char12. var2:best. nullvar:best.\r\nstring,232,.a\r\nstring,232,.b\r\nstring,232,._\r\nstring,232,0\r\nstring,232,.z\r\nstring,232,.`,
+      sasjs_tables: testTable
+    }
+
+    expect(formatDataForRequest(testTableWithNullVars)).toEqual(expectedOutput)
+  })
+
+  it('should return error if string is more than 32765 characters', () => {
+    const data = { testTable: [{ var1: 'z'.repeat(32765 + 1) }] }
+
+    expect(() => formatDataForRequest(data)).toThrow(
+      new Error(
+        'The max length of a string value in SASjs is 32765 characters.'
+      )
+    )
+  })
+
+  it('should return error if string is more than 32765 characters', () => {
+    const charsCount = 16 * 1000 + 1
+    const allChars = 'z'.repeat(charsCount)
+    const data = { [testTable]: [{ var1: allChars }] }
+    const firstChunk = `var1:$char${charsCount}.\r\n`
+    const firstChunkChars = 'z'.repeat(16000 - firstChunk.length)
+    const secondChunkChars = 'z'.repeat(
+      charsCount - (16000 - firstChunk.length)
+    )
+
+    const expectedOutput = {
+      sasjs1data0: 2,
+      sasjs1data1: `${firstChunk}${firstChunkChars}`,
+      sasjs1data2: secondChunkChars,
+      sasjs_tables: testTable
+    }
+
+    expect(formatDataForRequest(data)).toEqual(expectedOutput)
+  })
+})