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marcin-golebiowskimarcin-golebiowski
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Add tests
1 parent a16b875 commit c261356

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Lines changed: 129 additions & 34 deletions

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‎src/SpiceSharpParser.Tests/CustomComponents/IdealDiodeLtspiceGoldenTests.cs‎

Lines changed: 129 additions & 34 deletions
Original file line numberDiff line numberDiff line change
@@ -41,34 +41,37 @@ public void DcSweep_WhenComparedWithLtspice_MatchesIdealDiodeParameters()
4141
}
4242

4343
[LtspiceFact]
44-
public void Ac_WhenComparedWithLtspice_MatchesForwardBiasedSmallSignal()
44+
public void Ac_WhenComparedWithLtspice_MatchesSmallSignalDerivatives()
4545
{
4646
string ltspiceExecutable = GetLtspiceExecutable();
4747

48-
var raw = RunLtspiceRaw(
49-
ltspiceExecutable,
50-
"ac_forward_biased_small_signal",
51-
CreateLtspiceAcNetlist());
52-
var ltspicePoints = LtspiceAsciiRawFile.GetComplexSeries(raw, "V(out)");
53-
var spiceSharpPoints = RunSpiceSharpAcForwardBiasedSmallSignal();
54-
55-
Assert.Equal(ltspicePoints.Count, spiceSharpPoints.Count);
56-
for (int i = 0; i < ltspicePoints.Count; i++)
48+
foreach (var testCase in CreateAcCases())
5749
{
58-
AssertClose(
59-
"ac_forward_biased_small_signal",
60-
ltspicePoints[i].Frequency,
61-
ltspicePoints[i].Frequency,
62-
spiceSharpPoints[i].Frequency,
63-
1e-9,
64-
1e-9);
65-
AssertComplexClose(
66-
"ac_forward_biased_small_signal",
67-
ltspicePoints[i].Frequency,
68-
ltspicePoints[i].Value,
69-
spiceSharpPoints[i].Value,
70-
1e-8,
71-
1e-5);
50+
var raw = RunLtspiceRaw(
51+
ltspiceExecutable,
52+
testCase.Name,
53+
CreateLtspiceAcNetlist(testCase));
54+
var ltspicePoints = LtspiceAsciiRawFile.GetComplexSeries(raw, "V(out)");
55+
var spiceSharpPoints = RunSpiceSharpAcSmallSignal(testCase);
56+
57+
Assert.Equal(ltspicePoints.Count, spiceSharpPoints.Count);
58+
for (int i = 0; i < ltspicePoints.Count; i++)
59+
{
60+
AssertClose(
61+
testCase.Name,
62+
ltspicePoints[i].Frequency,
63+
ltspicePoints[i].Frequency,
64+
spiceSharpPoints[i].Frequency,
65+
1e-9,
66+
1e-9);
67+
AssertComplexClose(
68+
testCase.Name,
69+
ltspicePoints[i].Frequency,
70+
ltspicePoints[i].Value,
71+
spiceSharpPoints[i].Value,
72+
testCase.AbsoluteTolerance,
73+
testCase.RelativeTolerance);
74+
}
7275
}
7376
}
7477

@@ -290,6 +293,64 @@ private static IReadOnlyList<LtspiceIdealDiodeCase> CreateCases()
290293
};
291294
}
292295

296+
private static IReadOnlyList<LtspiceIdealDiodeAcCase> CreateAcCases()
297+
{
298+
return new[]
299+
{
300+
new LtspiceIdealDiodeAcCase(
301+
"ac_forward_biased_small_signal",
302+
3.0,
303+
".model did D(Ron=2 Roff=1e9 Vfwd=1)",
304+
parameters =>
305+
{
306+
parameters.OnResistance = 2.0;
307+
parameters.OffResistance = 1e9;
308+
parameters.ForwardVoltage = 1.0;
309+
}),
310+
311+
new LtspiceIdealDiodeAcCase(
312+
"ac_forward_current_limit_derivative",
313+
5.0,
314+
".model did D(Ron=1 Roff=1e12 Vfwd=0 Ilimit=2)",
315+
parameters =>
316+
{
317+
parameters.OnResistance = 1.0;
318+
parameters.OffResistance = 1e12;
319+
parameters.ForwardVoltage = 0.0;
320+
parameters.ForwardCurrentLimit = 2.0;
321+
},
322+
1e-7,
323+
1e-4),
324+
325+
new LtspiceIdealDiodeAcCase(
326+
"ac_forward_epsilon_ramp_derivative",
327+
1.1,
328+
".model did D(Ron=1 Roff=1e12 Vfwd=1 Epsilon=0.2)",
329+
parameters =>
330+
{
331+
parameters.OnResistance = 1.0;
332+
parameters.OffResistance = 1e12;
333+
parameters.ForwardVoltage = 1.0;
334+
parameters.ForwardEpsilon = 0.2;
335+
},
336+
1e-7,
337+
1e-4),
338+
339+
new LtspiceIdealDiodeAcCase(
340+
"ac_reverse_breakdown_rrev_derivative",
341+
-5.0,
342+
".model did D(Ron=1 Roff=1e12 Vfwd=1 Vrev=1.5 Rrev=3)",
343+
parameters =>
344+
{
345+
parameters.OnResistance = 1.0;
346+
parameters.OffResistance = 1e12;
347+
parameters.ForwardVoltage = 1.0;
348+
parameters.ReverseVoltage = 1.5;
349+
parameters.ReverseResistance = 3.0;
350+
}),
351+
};
352+
}
353+
293354
private static string GetLtspiceExecutable()
294355
{
295356
string executable = Environment.GetEnvironmentVariable(LtspiceExecutableVariable);
@@ -375,15 +436,15 @@ private static IReadOnlyList<string> CreateLtspiceNetlist(LtspiceIdealDiodeCase
375436
};
376437
}
377438

378-
private static IReadOnlyList<string> CreateLtspiceAcNetlist()
439+
private static IReadOnlyList<string> CreateLtspiceAcNetlist(LtspiceIdealDiodeAcCase testCase)
379440
{
380441
return new[]
381442
{
382443
"Ideal diode LTspice AC golden comparison",
383-
"V1 in 0 DC 3 AC 1",
384-
"R1 in out 1",
444+
FormattableString.Invariant($"V1 in 0 DC {testCase.SourceVoltage} AC 1"),
445+
FormattableString.Invariant($"R1 in out {testCase.SourceResistance}"),
385446
"D1 out 0 did",
386-
".model did D(Ron=2 Roff=1e9 Vfwd=1)",
447+
testCase.ModelLine,
387448
".ac lin 1 1k 1k",
388449
".save V(out)",
389450
".end",
@@ -486,16 +547,15 @@ private static ProcessResult RunLtspice(string ltspiceExecutable, string circuit
486547
return result;
487548
}
488549

489-
private static IReadOnlyList<(double Frequency, Complex Value)> RunSpiceSharpAcForwardBiasedSmallSignal()
550+
private static IReadOnlyList<(double Frequency, Complex Value)> RunSpiceSharpAcSmallSignal(
551+
LtspiceIdealDiodeAcCase testCase)
490552
{
491553
var diode = new IdealDiode("D1", "out", "0");
492-
diode.Parameters.OnResistance = 2.0;
493-
diode.Parameters.OffResistance = 1e9;
494-
diode.Parameters.ForwardVoltage = 1.0;
554+
testCase.Configure(diode.Parameters);
495555

496556
var circuit = new Circuit(
497-
new VoltageSource("V1", "in", "0", 3.0).SetParameter("acmag", 1.0),
498-
new Resistor("R1", "in", "out", 1.0),
557+
new VoltageSource("V1", "in", "0", testCase.SourceVoltage).SetParameter("acmag", 1.0),
558+
new Resistor("R1", "in", "out", testCase.SourceResistance),
499559
diode);
500560

501561
var ac = new AC("ac", new LinearSweep(1000.0, 1000.0, 1));
@@ -653,6 +713,41 @@ public LtspiceIdealDiodeCase(
653713
public double RelativeTolerance { get; }
654714
}
655715

716+
private sealed class LtspiceIdealDiodeAcCase
717+
{
718+
public LtspiceIdealDiodeAcCase(
719+
string name,
720+
double sourceVoltage,
721+
string modelLine,
722+
Action<IdealDiodeParameters> configure,
723+
double absoluteTolerance = 1e-8,
724+
double relativeTolerance = 1e-5,
725+
double sourceResistance = 1.0)
726+
{
727+
this.Name = name;
728+
this.SourceVoltage = sourceVoltage;
729+
this.ModelLine = modelLine;
730+
this.Configure = configure;
731+
this.AbsoluteTolerance = absoluteTolerance;
732+
this.RelativeTolerance = relativeTolerance;
733+
this.SourceResistance = sourceResistance;
734+
}
735+
736+
public string Name { get; }
737+
738+
public double SourceVoltage { get; }
739+
740+
public string ModelLine { get; }
741+
742+
public Action<IdealDiodeParameters> Configure { get; }
743+
744+
public double AbsoluteTolerance { get; }
745+
746+
public double RelativeTolerance { get; }
747+
748+
public double SourceResistance { get; }
749+
}
750+
656751
private sealed class LtspiceAsciiRawFile
657752
{
658753
private LtspiceAsciiRawFile(IReadOnlyList<string> variables, IReadOnlyList<Complex[]> points)

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