diff --git a/tests/Stellar/None/none.in b/tests/Stellar/None/none.in
new file mode 100644
index 000000000..448ffc8fb
--- /dev/null
+++ b/tests/Stellar/None/none.in
@@ -0,0 +1,8 @@
+#
+sName	                  none
+saModules	              stellar
+sStellarModel             none
+dMass                     1
+dRadius                   0.00465
+dLuminosity               -1
+saOutputOrder Time -Luminosity -Radius Temperature -RotPer -LXUVTot RadGyra
diff --git a/tests/Stellar/None/test_None.py b/tests/Stellar/None/test_None.py
new file mode 100644
index 000000000..4f28547c3
--- /dev/null
+++ b/tests/Stellar/None/test_None.py
@@ -0,0 +1,159 @@
+import astropy.units as u
+from benchmark import Benchmark, benchmark
+
+
+@benchmark(
+    {
+        "log.initial.system.Age": {"value": 0.000000, "unit": u.sec},
+        "log.initial.system.Time": {"value": 0.000000, "unit": u.sec},
+        "log.initial.system.TotAngMom": {
+            "value": 1.749323e43,
+            "unit": (u.kg * u.m**2) / u.sec,
+        },
+        "log.initial.system.TotEnergy": {"value": -2.269742e41, "unit": u.Joule},
+        "log.initial.system.PotEnergy": {"value": -2.276102e41, "unit": u.Joule},
+        "log.initial.system.KinEnergy": {"value": 6.360719e38, "unit": u.Joule},
+        "log.initial.system.DeltaTime": {"value": 0.000000, "unit": u.sec},
+        "log.initial.none.Mass": {"value": 1.988416e30, "unit": u.kg},
+        "log.initial.none.Radius": {"value": 109.065411, "unit": u.Rearth},
+        "log.initial.none.RadGyra": {"value": 0.500000},
+        "log.initial.none.RotAngMom": {
+            "value": 1.749323e43,
+            "unit": (u.kg * u.m**2) / u.sec,
+        },
+        "log.initial.none.RotVel": {"value": 5.058765e04, "unit": u.m / u.sec},
+        "log.initial.none.BodyType": {"value": 0.000000},
+        "log.initial.none.RotRate": {"value": 7.272205e-05, "unit": 1 / u.sec},
+        "log.initial.none.RotPer": {"value": 1.000000, "unit": u.day},
+        "log.initial.none.Density": {"value": 1410.209204, "unit": u.kg / u.m**3},
+        "log.initial.none.HZLimitDryRunaway": {"value": 1.357831e11, "unit": u.m},
+        "log.initial.none.HZLimRecVenus": {"value": 1.118929e11, "unit": u.m},
+        "log.initial.none.HZLimRunaway": {"value": 1.461108e11, "unit": u.m},
+        "log.initial.none.HZLimMoistGreenhouse": {"value": 1.480517e11, "unit": u.m},
+        "log.initial.none.HZLimMaxGreenhouse": {"value": 2.509538e11, "unit": u.m},
+        "log.initial.none.HZLimEarlyMars": {"value": 2.738109e11, "unit": u.m},
+        "log.initial.none.Instellation": {
+            "value": -1.000000,
+            "unit": u.kg / u.sec**3,
+        },
+        "log.initial.none.CriticalSemiMajorAxis": {"value": -1.000000, "unit": u.m},
+        "log.initial.none.LXUVTot": {"value": 0.001000, "unit": u.LSUN},
+        "log.initial.none.LostEnergy": {"value": 5.562685e-309, "unit": u.Joule},
+        "log.initial.none.LostAngMom": {
+            "value": 5.562685e-309,
+            "unit": (u.kg * u.m**2) / u.sec,
+        },
+        "log.initial.none.Luminosity": {"value": 1.000000, "unit": u.LSUN},
+        "log.initial.none.LXUVStellar": {"value": 3.846000e23, "unit": u.W},
+        "log.initial.none.Temperature": {"value": 5778.000000, "unit": u.K},
+        "log.initial.none.LXUVFrac": {"value": 0.001000},
+        "log.initial.none.RossbyNumber": {"value": 0.078260},
+        "log.initial.none.DRotPerDtStellar": {"value": 4.047674e-11},
+        "log.final.system.Age": {"value": 3.155760e10, "unit": u.sec, "rtol": 1e-4},
+        "log.final.system.Time": {"value": 3.155760e10, "unit": u.sec, "rtol": 1e-4},
+        "log.final.system.TotAngMom": {
+            "value": 1.749323e43,
+            "unit": (u.kg * u.m**2) / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.system.TotEnergy": {
+            "value": -2.269742e41,
+            "unit": u.Joule,
+            "rtol": 1e-4,
+        },
+        "log.final.system.PotEnergy": {
+            "value": -2.276102e41,
+            "unit": u.Joule,
+            "rtol": 1e-4,
+        },
+        "log.final.system.KinEnergy": {
+            "value": 6.360531e38,
+            "unit": u.Joule,
+            "rtol": 1e-4,
+        },
+        "log.final.none.Mass": {"value": 1.988416e30, "unit": u.kg, "rtol": 1e-4},
+        "log.final.none.Radius": {"value": 109.065411, "unit": u.Rearth, "rtol": 1e-4},
+        "log.final.none.RadGyra": {"value": 0.500000, "rtol": 1e-4},
+        "log.final.none.RotAngMom": {
+            "value": 1.749298e43,
+            "unit": (u.kg * u.m**2) / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.none.RotVel": {
+            "value": 5.058690e04,
+            "unit": u.m / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.none.BodyType": {"value": 0.000000, "rtol": 1e-4},
+        "log.final.none.RotRate": {
+            "value": 7.272098e-05,
+            "unit": 1 / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.none.RotPer": {"value": 1.000015, "unit": u.day, "rtol": 1e-4},
+        "log.final.none.Density": {
+            "value": 1410.209204,
+            "unit": u.kg / u.m**3,
+            "rtol": 1e-4,
+        },
+        "log.final.none.HZLimitDryRunaway": {
+            "value": 1.357831e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.none.HZLimRecVenus": {
+            "value": 1.118929e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.none.HZLimRunaway": {
+            "value": 1.461108e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.none.HZLimMoistGreenhouse": {
+            "value": 1.480517e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.none.HZLimMaxGreenhouse": {
+            "value": 2.509538e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.none.HZLimEarlyMars": {
+            "value": 2.738109e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.none.Instellation": {
+            "value": -1.000000,
+            "unit": u.kg / u.sec**3,
+            "rtol": 1e-4,
+        },
+        "log.final.none.CriticalSemiMajorAxis": {
+            "value": -1.000000,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.none.LXUVTot": {"value": 0.001000, "unit": u.LSUN, "rtol": 1e-4},
+        "log.final.none.LostEnergy": {
+            "value": 1.880726e34,
+            "unit": u.Joule,
+            "rtol": 1e-4,
+        },
+        "log.final.none.LostAngMom": {
+            "value": 2.586203e38,
+            "unit": (u.kg * u.m**2) / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.none.Luminosity": {"value": 1.000000, "unit": u.LSUN, "rtol": 1e-4},
+        "log.final.none.LXUVStellar": {"value": 3.846000e23, "unit": u.W, "rtol": 1e-4},
+        "log.final.none.Temperature": {"value": 5778.000000, "unit": u.K, "rtol": 1e-4},
+        "log.final.none.LXUVFrac": {"value": 0.001000, "rtol": 1e-4},
+        "log.final.none.RossbyNumber": {"value": 0.078261, "rtol": 1e-4},
+        "log.final.none.DRotPerDtStellar": {"value": 4.047734e-11, "rtol": 1e-4},
+    }
+)
+class Test_None(Benchmark):
+    pass
diff --git a/tests/Stellar/None/vpl.in b/tests/Stellar/None/vpl.in
new file mode 100644
index 000000000..e38e2b5ba
--- /dev/null
+++ b/tests/Stellar/None/vpl.in
@@ -0,0 +1,17 @@
+#
+sSystemName               system
+iVerbose                  5
+bOverwrite                1
+saBodyFiles               none.in
+sUnitMass                 solar
+sUnitLength               AU
+sUnitTime                 YEARS
+sUnitAngle                d
+bDoLog                    1
+iDigits                   6
+dMinValue                 1e-10
+bDoForward                1
+bVarDt                    1
+dEta                      0.01
+dStopTime                 1000
+dOutputTime               1
diff --git a/tests/Stellar/SineWave/sinewave.in b/tests/Stellar/SineWave/sinewave.in
new file mode 100644
index 000000000..43496460a
--- /dev/null
+++ b/tests/Stellar/SineWave/sinewave.in
@@ -0,0 +1,12 @@
+#
+sName	                  sinewave
+saModules	              stellar
+sStellarModel             sinewave
+dMass                     1
+dRadius                   0.00465
+dLuminosity               -1
+dLuminosityAmplitude      -0.1
+dLuminosityPeriod         -100
+dLuminosityPhase          0
+
+saOutputOrder Time -Luminosity -Radius Temperature -RotPer -LXUVTot RadGyra
diff --git a/tests/Stellar/SineWave/test_SineWave.py b/tests/Stellar/SineWave/test_SineWave.py
new file mode 100644
index 000000000..fb5fbe579
--- /dev/null
+++ b/tests/Stellar/SineWave/test_SineWave.py
@@ -0,0 +1,178 @@
+import astropy.units as u
+from benchmark import Benchmark, benchmark
+
+
+@benchmark(
+    {
+        "log.initial.system.Age": {"value": 0.000000, "unit": u.sec},
+        "log.initial.system.Time": {"value": 0.000000, "unit": u.sec},
+        "log.initial.system.TotAngMom": {
+            "value": 1.749323e43,
+            "unit": (u.kg * u.m**2) / u.sec,
+        },
+        "log.initial.system.TotEnergy": {"value": -2.269742e41, "unit": u.Joule},
+        "log.initial.system.PotEnergy": {"value": -2.276102e41, "unit": u.Joule},
+        "log.initial.system.KinEnergy": {"value": 6.360719e38, "unit": u.Joule},
+        "log.initial.system.DeltaTime": {"value": 0.000000, "unit": u.sec},
+        "log.initial.sinewave.Mass": {"value": 1.988416e30, "unit": u.kg},
+        "log.initial.sinewave.Radius": {"value": 109.065411, "unit": u.Rearth},
+        "log.initial.sinewave.RadGyra": {"value": 0.500000},
+        "log.initial.sinewave.RotAngMom": {
+            "value": 1.749323e43,
+            "unit": (u.kg * u.m**2) / u.sec,
+        },
+        "log.initial.sinewave.RotVel": {"value": 5.058765e04, "unit": u.m / u.sec},
+        "log.initial.sinewave.BodyType": {"value": 0.000000},
+        "log.initial.sinewave.RotRate": {"value": 7.272205e-05, "unit": 1 / u.sec},
+        "log.initial.sinewave.RotPer": {"value": 1.000000, "unit": u.day},
+        "log.initial.sinewave.Density": {"value": 1410.209204, "unit": u.kg / u.m**3},
+        "log.initial.sinewave.HZLimitDryRunaway": {"value": 1.357831e11, "unit": u.m},
+        "log.initial.sinewave.HZLimRecVenus": {"value": 1.118929e11, "unit": u.m},
+        "log.initial.sinewave.HZLimRunaway": {"value": 1.461108e11, "unit": u.m},
+        "log.initial.sinewave.HZLimMoistGreenhouse": {
+            "value": 1.480517e11,
+            "unit": u.m,
+        },
+        "log.initial.sinewave.HZLimMaxGreenhouse": {"value": 2.509538e11, "unit": u.m},
+        "log.initial.sinewave.HZLimEarlyMars": {"value": 2.738109e11, "unit": u.m},
+        "log.initial.sinewave.Instellation": {
+            "value": -1.000000,
+            "unit": u.kg / u.sec**3,
+        },
+        "log.initial.sinewave.CriticalSemiMajorAxis": {"value": -1.000000, "unit": u.m},
+        "log.initial.sinewave.LXUVTot": {"value": 0.001000, "unit": u.LSUN},
+        "log.initial.sinewave.LostEnergy": {"value": 5.562685e-309, "unit": u.Joule},
+        "log.initial.sinewave.LostAngMom": {
+            "value": 5.562685e-309,
+            "unit": (u.kg * u.m**2) / u.sec,
+        },
+        "log.initial.sinewave.Luminosity": {"value": 1.000000, "unit": u.LSUN},
+        "log.initial.sinewave.LXUVStellar": {"value": 3.846000e23, "unit": u.W},
+        "log.initial.sinewave.Temperature": {"value": 5778.000000, "unit": u.K},
+        "log.initial.sinewave.LXUVFrac": {"value": 0.001000},
+        "log.initial.sinewave.RossbyNumber": {"value": 0.078260},
+        "log.initial.sinewave.DRotPerDtStellar": {"value": 4.047674e-11},
+        "log.final.system.Age": {"value": 3.155760e10, "unit": u.sec, "rtol": 1e-4},
+        "log.final.system.Time": {"value": 3.155760e10, "unit": u.sec, "rtol": 1e-4},
+        "log.final.system.TotAngMom": {
+            "value": 1.749323e43,
+            "unit": (u.kg * u.m**2) / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.system.TotEnergy": {
+            "value": -2.269742e41,
+            "unit": u.Joule,
+            "rtol": 1e-4,
+        },
+        "log.final.system.PotEnergy": {
+            "value": -2.276102e41,
+            "unit": u.Joule,
+            "rtol": 1e-4,
+        },
+        "log.final.system.KinEnergy": {
+            "value": 6.360531e38,
+            "unit": u.Joule,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.Mass": {"value": 1.988416e30, "unit": u.kg, "rtol": 1e-4},
+        "log.final.sinewave.Radius": {
+            "value": 109.065411,
+            "unit": u.Rearth,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.RadGyra": {"value": 0.500000, "rtol": 1e-4},
+        "log.final.sinewave.RotAngMom": {
+            "value": 1.749298e43,
+            "unit": (u.kg * u.m**2) / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.RotVel": {
+            "value": 5.058690e04,
+            "unit": u.m / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.BodyType": {"value": 0.000000, "rtol": 1e-4},
+        "log.final.sinewave.RotRate": {
+            "value": 7.272098e-05,
+            "unit": 1 / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.RotPer": {"value": 1.000015, "unit": u.day, "rtol": 1e-4},
+        "log.final.sinewave.Density": {
+            "value": 1410.209204,
+            "unit": u.kg / u.m**3,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.HZLimitDryRunaway": {
+            "value": 1.353561e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.HZLimRecVenus": {
+            "value": 1.116179e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.HZLimRunaway": {
+            "value": 1.458021e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.HZLimMoistGreenhouse": {
+            "value": 1.476878e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.HZLimMaxGreenhouse": {
+            "value": 2.505257e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.HZLimEarlyMars": {
+            "value": 2.733430e11,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.Instellation": {
+            "value": -1.000000,
+            "unit": u.kg / u.sec**3,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.CriticalSemiMajorAxis": {
+            "value": -1.000000,
+            "unit": u.m,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.LXUVTot": {"value": 0.000994, "unit": u.LSUN, "rtol": 1e-4},
+        "log.final.sinewave.LostEnergy": {
+            "value": 1.880726e34,
+            "unit": u.Joule,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.LostAngMom": {
+            "value": 2.586203e38,
+            "unit": (u.kg * u.m**2) / u.sec,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.Luminosity": {
+            "value": 0.993721,
+            "unit": u.LSUN,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.LXUVStellar": {
+            "value": 3.821851e23,
+            "unit": u.W,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.Temperature": {
+            "value": 5760.875525,
+            "unit": u.K,
+            "rtol": 1e-4,
+        },
+        "log.final.sinewave.LXUVFrac": {"value": 0.001000, "rtol": 1e-4},
+        "log.final.sinewave.RossbyNumber": {"value": 0.076602, "rtol": 1e-4},
+        "log.final.sinewave.DRotPerDtStellar": {"value": 4.047734e-11, "rtol": 1e-4},
+    }
+)
+class Test_SineWave(Benchmark):
+    pass
diff --git a/tests/Stellar/SineWave/vpl.in b/tests/Stellar/SineWave/vpl.in
new file mode 100644
index 000000000..7e5221cbd
--- /dev/null
+++ b/tests/Stellar/SineWave/vpl.in
@@ -0,0 +1,17 @@
+#
+sSystemName               system
+iVerbose                  5
+bOverwrite                1
+saBodyFiles               sinewave.in
+sUnitMass                 solar
+sUnitLength               AU
+sUnitTime                 YEARS
+sUnitAngle                d
+bDoLog                    1
+iDigits                   6
+dMinValue                 1e-10
+bDoForward                1
+bVarDt                    1
+dEta                      0.01
+dStopTime                 1000
+dOutputTime               1