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cxx/tests/astrom_test.cpp

@@ -0,0 +1,98 @@
+#include <fstream>
+#include <iostream>
+
+#include "../mount_astrom.h"
+
+
+static std::string leap_secs_file = R"--(
+#  Value of TAI-UTC in second valid beetween the initial value until
+#  the epoch given on the next line. The last line reads that NO
+#  leap second was introduced since the corresponding date
+#  Updated through IERS Bulletin 69 issued in January 2025
+#
+#
+#  File expires on 28 December 2025
+#
+#
+#    MJD        Date        TAI-UTC (s)
+#           day month year
+#    ---    --------------   ------
+#
+    41317.0    1  1 1972       10
+    41499.0    1  7 1972       11
+    41683.0    1  1 1973       12
+    42048.0    1  1 1974       13
+    42413.0    1  1 1975       14
+    42778.0    1  1 1976       15
+    43144.0    1  1 1977       16
+    43509.0    1  1 1978       17
+    43874.0    1  1 1979       18
+    44239.0    1  1 1980       19
+    44786.0    1  7 1981       20
+    45151.0    1  7 1982       21
+    45516.0    1  7 1983       22
+    46247.0    1  7 1985       23
+    47161.0    1  1 1988       24
+    47892.0    1  1 1990       25
+    48257.0    1  1 1991       26
+    48804.0    1  7 1992       27
+    49169.0    1  7 1993       28
+    49534.0    1  7 1994       29
+    50083.0    1  1 1996       30
+    50630.0    1  7 1997       31
+    51179.0    1  1 1999       32
+    53736.0    1  1 2006       33
+    54832.0    1  1 2009       34
+    56109.0    1  7 2012       35
+    57204.0    1  7 2015       36
+    57754.0    1  1 2017       37
+)--";
+
+
+int main(int argc, char* argv[])
+{
+    int ecode = 0;
+
+    if (argc < 2) {
+        std::cerr << "Usage: " << argv[0] << " bulletinA-filename\n";
+        exit(1);
+    }
+
+    std::ifstream ist(argv[1]);
+    if (!ist) {
+        std::cerr << "Invalid filename!\n";
+        exit(1);
+    }
+
+    bool ok = mcc::astro::mcc_parse_bulletinA(ist);
+
+    if (!ok) {
+        std::cout << "Cannot parse input IERS Bulletin A file!\n";
+        ecode = 1;
+    } else {
+        std::cout << "IERS Bulletin A data:\n";
+        std::cout << "Date: " << mcc::astro::CURRENT_EARTH_ORIENT_DB.bulletinDate << "\n";
+        for (auto& el : mcc::astro::CURRENT_EARTH_ORIENT_DB.db) {
+            std::cout << "MJD: " << el.mjd << "\tDUT1 = " << el.dut1 << "\n";
+        }
+    }
+
+    ist.close();
+
+    std::cout << "\n\n\n";
+
+    std::istringstream isst(leap_secs_file);
+    ok = mcc::astro::mcc_parse_leapsecs(isst);
+
+    if (!ok) {
+        std::cout << "Cannot parse input IERS leap seconds file!\n";
+        ecode = 1;
+    } else {
+        std::cout << "IERS leap seconds data:\n";
+        for (auto& el : mcc::astro::CURRENT_LEAPSECONDS_DB) {
+            std::cout << "MJD: " << el.mjd << "\tTAI-UTC = " << el.tai_utc << "\n";
+        }
+    }
+
+    return ecode;
+}