From 4561eebdc005a99b902584b05001205fd91d9b7c Mon Sep 17 00:00:00 2001
From: Matthias Koefferlein <matthias@klayout.de>
Date: Sun, 14 Jun 2026 21:33:41 +0200
Subject: [PATCH] Added missing files, added tests

---
 .../dbLayoutToNetlistReaderTests.cc           | 21 +++++++
 testdata/algo/l2n_reader_8.l2n                | 55 +++++++++++++++++++
 testdata/algo/l2n_reader_8s.l2n               | 40 ++++++++++++++
 testdata/algo/l2n_writer_au_4.txt             | 55 +++++++++++++++++++
 testdata/algo/l2n_writer_au_4s.txt            | 40 ++++++++++++++
 5 files changed, 211 insertions(+)
 create mode 100644 testdata/algo/l2n_reader_8.l2n
 create mode 100644 testdata/algo/l2n_reader_8s.l2n
 create mode 100644 testdata/algo/l2n_writer_au_4.txt
 create mode 100644 testdata/algo/l2n_writer_au_4s.txt

diff --git a/src/db/unit_tests/dbLayoutToNetlistReaderTests.cc b/src/db/unit_tests/dbLayoutToNetlistReaderTests.cc
index 3fad59f11..07923a752 100644
--- a/src/db/unit_tests/dbLayoutToNetlistReaderTests.cc
+++ b/src/db/unit_tests/dbLayoutToNetlistReaderTests.cc
@@ -584,3 +584,24 @@ TEST(8_VariantDeviceParameters)
     "end;\n"
   );
 }
+
+TEST(9_VariantDeviceParametersShort)
+{
+  db::LayoutToNetlist l2n;
+
+  //  build from: testdata/algo/l2n_reader_4.gds
+
+  std::string in_path = tl::combine_path (tl::combine_path (tl::testdata (), "algo"), "l2n_reader_8s.l2n");
+  tl::InputStream is_in (in_path);
+
+  db::LayoutToNetlistStandardReader reader (is_in);
+  reader.read (&l2n);
+
+  tl_assert (l2n.netlist () != 0);
+  EXPECT_EQ (l2n.netlist ()->to_string (),
+    "circuit TOP ();\n"
+    "  device DEVCLS dev (S=(null),G=(null),D=(null),B=(null)) (D=17.5,L=42,S=XYZ,B=true,N=nil);\n"
+    "  device DEVCLS dev2 (S=(null),G=(null),D=(null),B=(null)) (D=0,L=0,S=,B=false,N=nil);\n"
+    "end;\n"
+  );
+}
diff --git a/testdata/algo/l2n_reader_8.l2n b/testdata/algo/l2n_reader_8.l2n
new file mode 100644
index 000000000..381730a7d
--- /dev/null
+++ b/testdata/algo/l2n_reader_8.l2n
@@ -0,0 +1,55 @@
+#%l2n-klayout
+top(TOP)
+unit(0.001)
+
+# Layer section
+# This section lists the mask layers (drawing or derived) and their connections.
+
+# Mask layers
+
+# Mask layer connectivity
+
+# Device class section
+class(DEVCLS MOS4 1
+ param(D 1 0)
+ param-int(L 1 0)
+ param-string(S 1 '')
+ param-var(B 1 'false')
+ param-nil(N 1)
+ terminal(S)
+ terminal(G)
+ terminal(D)
+ terminal(B)
+)
+
+# Circuit section
+# Circuits are the hierarchical building blocks of the netlist.
+circuit(TOP
+
+ # Devices and their connections
+ device(1 DEVCLS
+  name(dev)
+  param(D 17.5)
+  param-int(L 42)
+  param-string(S 'XYZ')
+  param-var(B 'true')
+  param-nil(N)
+  terminal(S)
+  terminal(G)
+  terminal(D)
+  terminal(B)
+ )
+ device(2 DEVCLS
+  name(dev2)
+  param(D 0)
+  param-int(L 0)
+  param-string(S '')
+  param-var(B 'false')
+  param-nil(N)
+  terminal(S)
+  terminal(G)
+  terminal(D)
+  terminal(B)
+ )
+
+)
diff --git a/testdata/algo/l2n_reader_8s.l2n b/testdata/algo/l2n_reader_8s.l2n
new file mode 100644
index 000000000..cea1aa20a
--- /dev/null
+++ b/testdata/algo/l2n_reader_8s.l2n
@@ -0,0 +1,40 @@
+#%l2n-klayout
+W(TOP)
+U(0.001)
+K(DEVCLS MOS4 1
+ E(D 1 0)
+ EI(L 1 0)
+ ES(S 1 '')
+ EV(B 1 'false')
+ EN(N 1)
+ T(S)
+ T(G)
+ T(D)
+ T(B)
+)
+X(TOP
+ D(1 DEVCLS
+  I(dev)
+  E(D 17.5)
+  EI(L 42)
+  ES(S 'XYZ')
+  EV(B 'true')
+  EN(N)
+  T(S)
+  T(G)
+  T(D)
+  T(B)
+ )
+ D(2 DEVCLS
+  I(dev2)
+  E(D 0)
+  EI(L 0)
+  ES(S '')
+  EV(B 'false')
+  EN(N)
+  T(S)
+  T(G)
+  T(D)
+  T(B)
+ )
+)
diff --git a/testdata/algo/l2n_writer_au_4.txt b/testdata/algo/l2n_writer_au_4.txt
new file mode 100644
index 000000000..381730a7d
--- /dev/null
+++ b/testdata/algo/l2n_writer_au_4.txt
@@ -0,0 +1,55 @@
+#%l2n-klayout
+top(TOP)
+unit(0.001)
+
+# Layer section
+# This section lists the mask layers (drawing or derived) and their connections.
+
+# Mask layers
+
+# Mask layer connectivity
+
+# Device class section
+class(DEVCLS MOS4 1
+ param(D 1 0)
+ param-int(L 1 0)
+ param-string(S 1 '')
+ param-var(B 1 'false')
+ param-nil(N 1)
+ terminal(S)
+ terminal(G)
+ terminal(D)
+ terminal(B)
+)
+
+# Circuit section
+# Circuits are the hierarchical building blocks of the netlist.
+circuit(TOP
+
+ # Devices and their connections
+ device(1 DEVCLS
+  name(dev)
+  param(D 17.5)
+  param-int(L 42)
+  param-string(S 'XYZ')
+  param-var(B 'true')
+  param-nil(N)
+  terminal(S)
+  terminal(G)
+  terminal(D)
+  terminal(B)
+ )
+ device(2 DEVCLS
+  name(dev2)
+  param(D 0)
+  param-int(L 0)
+  param-string(S '')
+  param-var(B 'false')
+  param-nil(N)
+  terminal(S)
+  terminal(G)
+  terminal(D)
+  terminal(B)
+ )
+
+)
diff --git a/testdata/algo/l2n_writer_au_4s.txt b/testdata/algo/l2n_writer_au_4s.txt
new file mode 100644
index 000000000..cea1aa20a
--- /dev/null
+++ b/testdata/algo/l2n_writer_au_4s.txt
@@ -0,0 +1,40 @@
+#%l2n-klayout
+W(TOP)
+U(0.001)
+K(DEVCLS MOS4 1
+ E(D 1 0)
+ EI(L 1 0)
+ ES(S 1 '')
+ EV(B 1 'false')
+ EN(N 1)
+ T(S)
+ T(G)
+ T(D)
+ T(B)
+)
+X(TOP
+ D(1 DEVCLS
+  I(dev)
+  E(D 17.5)
+  EI(L 42)
+  ES(S 'XYZ')
+  EV(B 'true')
+  EN(N)
+  T(S)
+  T(G)
+  T(D)
+  T(B)
+ )
+ D(2 DEVCLS
+  I(dev2)
+  E(D 0)
+  EI(L 0)
+  ES(S '')
+  EV(B 'false')
+  EN(N)
+  T(S)
+  T(G)
+  T(D)
+  T(B)
+ )
+)