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refactor: improve test_analytical_propagation.cpp — merge redundant SECTIONs, fix names, remove unused constant

test-refactor
cinnaboot 2 months ago
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f7c43594d5
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ea70f14a34
1 changed files with 10 additions and 21 deletions
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  1. 31
      tests/test_analytical_propagation.cpp

31
tests/test_analytical_propagation.cpp
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@ -36,9 +36,8 @@ SCENARIO("Analytical propagation: apsides, periods, vis-viva, timestep accuracy,
const double A2_V_PERI = 7874.183374942587e+00; // m/s at perigee
const double A2_V_APO = 3374.650017832537e+00; // m/s at apogee
// Precalculated displacement for 0.1s timestep (from precalc script)
const double VEL_CHANGE_SMALL_DT = 0.4920854266;
// 100-period propagation accumulates ~1.1e-12 rad anomaly error;
// ANG_TOL (1e-12) is too tight for long-term stability tests
const double LONG_TERM_ANG_TOL = 1e-10;
// === Helper lambdas ===
@ -148,7 +147,7 @@ SCENARIO("Analytical propagation: apsides, periods, vis-viva, timestep accuracy,
"Apsides spacecraft apogee");
}
SECTION("apsides perigee velocity > apogee velocity") {
SECTION("apsides perigee velocity matches precalculated value") {
Vec3 pos_peri, vel_peri, pos_apo, vel_apo;
get_state(A1_A, A1_E, 0.0, pos_peri, vel_peri);
get_state(A1_A, A1_E, M_PI, pos_apo, vel_apo);
@ -160,7 +159,7 @@ SCENARIO("Analytical propagation: apsides, periods, vis-viva, timestep accuracy,
REQUIRE_THAT(v_apo, WithinAbs(A1_V_APO, V_TOL));
}
SECTION("apsides perigee velocity > velocity at pi/4") {
SECTION("apsides velocity at pi/4 matches precalculated value") {
Vec3 pos_45, vel_45, pos_peri, vel_peri;
get_state(A1_A, A1_E, M_PI / 4.0, pos_45, vel_45);
get_state(A1_A, A1_E, 0.0, pos_peri, vel_peri);
@ -182,7 +181,7 @@ SCENARIO("Analytical propagation: apsides, periods, vis-viva, timestep accuracy,
"Timestep spacecraft apogee");
}
SECTION("timestep perigee velocity > apogee velocity") {
SECTION("timestep perigee velocity matches precalculated value") {
Vec3 pos_peri, vel_peri, pos_apo, vel_apo;
get_state(A2_A, A2_E, 0.0, pos_peri, vel_peri);
get_state(A2_A, A2_E, M_PI, pos_apo, vel_apo);
@ -216,14 +215,9 @@ SCENARIO("Analytical propagation: apsides, periods, vis-viva, timestep accuracy,
}
// --- 3. Period return (both spacecraft) ---
SECTION("apsides position returns after one period") {
check_period_return(A1_A, A1_E, A1_PERIOD,
"Apsides spacecraft position");
}
SECTION("apsides velocity returns after one period") {
SECTION("apsides position and velocity return after one period") {
check_period_return(A1_A, A1_E, A1_PERIOD,
"Apsides spacecraft velocity");
"Apsides spacecraft");
}
SECTION("apsides true anomaly returns after one period") {
@ -231,14 +225,9 @@ SCENARIO("Analytical propagation: apsides, periods, vis-viva, timestep accuracy,
"Apsides spacecraft nu");
}
SECTION("timestep position returns after one period") {
check_period_return(A2_A, A2_E, A2_PERIOD,
"Timestep spacecraft position");
}
SECTION("timestep velocity returns after one period") {
SECTION("timestep position and velocity return after one period") {
check_period_return(A2_A, A2_E, A2_PERIOD,
"Timestep spacecraft velocity");
"Timestep spacecraft");
}
SECTION("timestep true anomaly returns after one period") {
@ -287,7 +276,7 @@ SCENARIO("Analytical propagation: apsides, periods, vis-viva, timestep accuracy,
INFO("vel_change: " << vel_change << " m/s");
REQUIRE_THAT(rel_pos_error, WithinAbs(0.0, REL_TOL * 100.0));
REQUIRE_THAT(vel_change, WithinAbs(VEL_CHANGE_SMALL_DT, V_TOL));
REQUIRE_THAT(vel_change, WithinAbs(0.4920854266, V_TOL));
}
SECTION("accuracy at 1x period") {

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