Added test cases for NewKubeletClient with TLS enabled

pkg/client/kubelet_test.go

@@ -138,3 +138,42 @@ func TestNewKubeletClient(t *testing.T) {
 		t.Error("Expected a non nil error")
 	}
 }
+
+func TestNewKubeletClientTLSInvalid(t *testing.T) {
+	config := &KubeletConfig{
+		Port:        9000,
+		EnableHttps: true,
+		//Invalid certificate and key path
+		CertFile: "./testdata/mycertinvalid.cer",
+		KeyFile:  "./testdata/mycertinvalid.key",
+		CAFile:   "./testdata/myCA.cer",
+	}
+
+	client, err := NewKubeletClient(config)
+	if err == nil {
+		t.Errorf("Expected an error")
+	}
+	if client != nil {
+		t.Error("client should be nil as we provided invalid cert file")
+	}
+}
+
+func TestNewKubeletClientTLSValid(t *testing.T) {
+	config := &KubeletConfig{
+		Port:        9000,
+		EnableHttps: true,
+		CertFile:    "./testdata/mycertvalid.cer",
+		// TLS Configuration, only applies if EnableHttps is true.
+		KeyFile: "./testdata/mycertvalid.key",
+		// TLS Configuration, only applies if EnableHttps is true.
+		CAFile: "./testdata/myCA.cer",
+	}
+
+	client, err := NewKubeletClient(config)
+	if err != nil {
+		t.Errorf("Not expecting an error #%v", err)
+	}
+	if client == nil {
+		t.Error("client should not be nil")
+	}
+}

pkg/client/testdata/myCA.cer

+-----BEGIN CERTIFICATE-----
+MIIDATCCAemgAwIBAgIJAJqYDB1GJyW2MA0GCSqGSIb3DQEBBQUAMBcxFTATBgNV
+BAMMDCJrdWJlcm5ldGVzIjAeFw0xNDEyMTYwNjQ2MjVaFw0xNjEyMTUwNjQ2MjVa
+MBcxFTATBgNVBAMMDCJrdWJlcm5ldGVzIjCCASIwDQYJKoZIhvcNAQEBBQADggEP
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+7vL/tDs=
+-----END CERTIFICATE-----

pkg/client/testdata/myCA.key

+-----BEGIN RSA PRIVATE KEY-----
+MIIEowIBAAKCAQEAzgLeZ+ZzajKDpUh/CnFU6oesPxWca7aDHHve8aULdAQRoyY9
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+7l7eI4Y2s7H+SJixNtxtDitFOnjD+KI502ypsLEvlsXZpeXvFtaw
+-----END RSA PRIVATE KEY-----

pkg/client/testdata/mycertvalid.cer

+-----BEGIN CERTIFICATE-----
+MIICpzCCAY8CCQDWu9ClTyE4ADANBgkqhkiG9w0BAQUFADAXMRUwEwYDVQQDDAwi
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+Ivob4OleMUcIGTg=
+-----END CERTIFICATE-----

pkg/client/testdata/mycertvalid.key

+-----BEGIN RSA PRIVATE KEY-----
+MIIEpQIBAAKCAQEAqILVFx09Jb8pqSPBVFPsMY7ngg0JjT7VbmltC0NLR9aEMAAe
+zbhVIDwWbIjfKLSNz+hHrgTOZycMtXD98et9GnNQiKm+s4JkbJXteQWEX8lZSF3y
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+l+hvRO3LAm0VZSFaJE8WBm45vm09vR0X+69pkcSl/cfyVHygMmhaZSs=
+-----END RSA PRIVATE KEY-----

pkg/client/testdata/mycertvalid.req

+-----BEGIN CERTIFICATE REQUEST-----
+MIICWTCCAUECAQAwFDESMBAGA1UEAwwJbG9jYWxob3N0MIIBIjANBgkqhkiG9w0B
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+-----END CERTIFICATE REQUEST-----