// "X-Amz-Content-Sha256" not set and  PreSigned Signature v4 not enabled, sha256 checksum calculation is not skipped.
		{"", "", "X-Amz-Credential", "", true},

		// Test case - 8.
		// "X-Amz-Content-Sha256" has a proper value cannot skip.
		{"X-Amz-Content-Sha256", "somevalue", "", "", false},
	}

	for i, testCase := range testCases {
		// creating an input HTTP request.
		// Only the headers are relevant for this particular test.