fix: check usage calculation for MultiHTTP checks (#984)

Author: VikaCep

src/checkUsageCalc.test.ts

@@ -0,0 +1,100 @@
+import { UsageValues } from 'types';
+
+import { calculateMultiHTTPUsage, calculateUsage, getTotalChecksPerMonth } from './checkUsageCalc';
+
+describe('checkUsageCalc', () => {
+  describe('getTotalChecksPerMonth', () => {
+    it('should calculate total checks per month correctly when probeCount is 1', () => {
+      const probeCount = 1;
+      const frequencySeconds = 300;
+      const result = getTotalChecksPerMonth(probeCount, frequencySeconds);
+      expect(result).toBe(8928);
+    });
+
+    it('should calculate total checks per month correctly when probeCount is bigger than 1', () => {
+        const probeCount = 2;
+        const frequencySeconds = 300;
+        const result = getTotalChecksPerMonth(probeCount, frequencySeconds);
+        expect(result).toBe(17856);
+      });
+
+    it('should return 0 checks per month when probe count is 0', () => {
+      const probeCount = 0;
+      const frequencySeconds = 300;
+      const result = getTotalChecksPerMonth(probeCount, frequencySeconds);
+      expect(result).toBe(0);
+    });
+  });
+
+  describe('calculateUsage', () => {
+    it('should calculate usage correctly', () => {
+      const params = {
+        assertionCount: 1,
+        probeCount: 1,
+        frequencySeconds: 300,
+        seriesPerProbe: 22,
+      };
+      const expected: UsageValues = {
+        checksPerMonth: 8928,
+        activeSeries: 22,
+        logsGbPerMonth: 0.01,
+        dpm: 22,
+      };
+      const result = calculateUsage(params);
+      expect(result).toEqual(expected);
+    });
+
+    it('should return 0 values when probe count is 0', () => {
+      const params = {
+        assertionCount: 1,
+        probeCount: 0,
+        frequencySeconds: 300,
+        seriesPerProbe: 22,
+      };
+      const expected: UsageValues = {
+        checksPerMonth: 0,
+        activeSeries: 0,
+        logsGbPerMonth: 0,
+        dpm: 0,
+      };
+      const result = calculateUsage(params);
+      expect(result).toEqual(expected);
+    });
+  });
+
+  describe('calculateMultiHTTPUsage', () => {
+    it('should calculate multi HTTP usage correctly', () => {
+      const params = {
+        assertionCount: 1,
+        probeCount: 1,
+        frequencySeconds: 300,
+        seriesPerProbe: 33,
+      };
+      const expected: UsageValues = {
+        checksPerMonth: 8928,
+        activeSeries: 33,
+        logsGbPerMonth: 0.013847328,
+        dpm: 33,
+      };
+      const result = calculateMultiHTTPUsage(params);
+      expect(result).toEqual(expected);
+    });
+
+    it('should return 0 values when probe count is 0', () => {
+      const params = {
+        assertionCount: 1,
+        probeCount: 0,
+        frequencySeconds: 300,
+        seriesPerProbe: 33,
+      };
+      const expected: UsageValues = {
+        checksPerMonth: 0,
+        activeSeries: 0,
+        logsGbPerMonth: 0,
+        dpm: 0,
+      };
+      const result = calculateMultiHTTPUsage(params);
+      expect(result).toEqual(expected);
+    });
+  });
+});

src/checkUsageCalc.ts

@@ -64,7 +64,7 @@ export function calculateMultiHTTPUsage({
   const logGBPerAssertionPerCheck = 0.0000004;
   const additionalSeriesPerUrl = 14;
 
-  const checksPerMonth = getChecksPerMonth(frequencySeconds);
+  const checksPerMonth = getTotalChecksPerMonth(probeCount, frequencySeconds);
 
   // Calculate logs
   const baseLogsGbPerMonth = checksPerMonth * logGBPerProbe;