From aa1595c734a1bd75b52e5f75bf5a8b5cae2e498a Mon Sep 17 00:00:00 2001
From: Julien Dessaux
Date: Sat, 2 Oct 2021 21:49:55 +0200
Subject: Refactoring

---
 tests/field.nim     | 220 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 tests/testField.nim | 220 ----------------------------------------------------
 2 files changed, 220 insertions(+), 220 deletions(-)
 create mode 100644 tests/field.nim
 delete mode 100644 tests/testField.nim

diff --git a/tests/field.nim b/tests/field.nim
new file mode 100644
index 0000000..8d5a1dc
--- /dev/null
+++ b/tests/field.nim
@@ -0,0 +1,220 @@
+import unittest
+
+include ../src/field
+
+func `==`(a, b: Line): bool = a.x == b.x and a.l == b.l and a.columns == b.columns
+func `==`(a, b: Field): bool = a.x == b.x and a.lx == b.lx and a.y == b.y and a.ly == b.ly and a.lines == b.lines
+func cols(a: openarray[char]): seq[int] =
+  result.setlen(a.len)
+  for i in 0..<a.len:
+    result[i] = a[i].int()
+
+const minimal = Field(x: 0, y: 0, lx: 1, ly: 1, lines: @[Line(x: 0, l: 1, columns: @[int('@')])])
+
+suite "Field":
+  test "blank":
+    var f = Field(x: -7, y: -5, lx: 17, ly: 10, lines: @[
+      Line(x: -5, l: 1, columns: @[int('x')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 1, columns: @[int('e')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), int('z'), 32, 32, int('r')]),
+      Line(x: -3, l: 1, columns: @[int('f')]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -7, l: 1, columns: @[int('y')]),
+    ])
+    const moinsz = Field(x: -7, y: -5, lx: 17, ly: 10, lines: @[
+      Line(x: -5, l: 1, columns: @[int('x')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 1, columns: @[int('e')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: -3, l: 1, columns: @[int('f')]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -7, l: 1, columns: @[int('y')]),
+    ])
+    f.blank(1, 0)
+    check f == moinsz
+    const moinsy = Field(x: -5, y: -5, lx: 15, ly: 8, lines: @[
+      Line(x: -5, l: 1, columns: @[int('x')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 1, columns: @[int('e')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: -3, l: 1, columns: @[int('f')]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.blank(-7, 4)
+    check f == moinsy
+    const moinsx = Field(x: -3, y: -3, lx: 13, ly: 6, lines: @[
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 1, columns: @[int('e')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: -3, l: 1, columns: @[int('f')]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.blank(-5, -5)
+    check f == moinsx
+    const moinsf = Field(x: -2, y: -3, lx: 12, ly: 6, lines: @[
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 1, columns: @[int('e')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: -3, l: 0, columns: @[]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.blank(-3, 1)
+    check f == moinsf
+    const moinse = Field(x: -2, y: -3, lx: 11, ly: 6, lines: @[
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 0, columns: @[]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: -3, l: 0, columns: @[]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.blank(9, -2)
+    check f == moinse
+    const moinsu = Field(x: -2, y: 0, lx: 8, ly: 3, lines: @[
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: -3, l: 0, columns: @[]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.blank(8, -3)
+    check f == moinsu
+    const moinsd = Field(x: -2, y: 0, lx: 7, ly: 1, lines: @[Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')])])
+    f.blank(5, 2)
+    check f == moinsd
+    const moinsl = Field(x: 0, y: 0, lx: 5, ly: 1, lines: @[Line(x: 0, l: 5, columns: @[int('@'), 32, 32, 32, int('r')])])
+    f.blank(-2,0)
+    check f == moinsl
+    const moinsr = Field(x: 0, y: 0, lx: 1, ly: 1, lines: @[Line(x: 0, l: 1, columns: @[int('@')])])
+    f.blank(4,0)
+    check f == moinsr
+  test "get":
+    check minimal.get(0,0) == int('@')
+    check minimal.get(1,0) == int(' ')
+  test "isIn":
+    check minimal.isIn(0, 0) == true
+    check minimal.isIn(1, 0) == false
+  test "load":
+    var nonexistant: Field
+    check nonexistant.load("nonexistant") == false
+    var invalid: Field
+    check invalid.load("examples/invalid.b98") == false
+    var empty: Field
+    check empty.load("examples/empty.b98") == false
+    var min: Field
+    check min.load("examples/minimal.b98") == true
+    check min == minimal
+    var hello1A: Field; var hello1B = Field(lx: 24, ly: 1, lines: @[Line(l:24, columns: @['6', '4', '+', '"', '!', 'd', 'l', 'r', 'o', 'W', ' ', ',', 'o', 'l', 'l', 'e', 'H', '"', '>', ':', '#', ',', '_', '@'].cols)])
+    check hello1A.load("examples/hello.b98") == true
+    check hello1A == hello1B
+    var rn: Field
+    check rn.load("examples/rn.b98") == true
+    check rn == hello1B
+    var hello2A: Field; var hello2B = Field(x: 1, lx: 33, ly: 2,lines: @[
+      Line(x:33, l:1, columns: @['v'].cols),
+      Line(x:1, l:33, columns: @['@', ' ', '>', ' ', '#', ';', '>', ':', '#', ',', '_', 'e', '-', 'j', ';', ' ', '"', 'H', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd', '!', '"', 'd', 'a', '<'].cols)
+    ])
+    check hello2A.load("examples/hello2.b98") == true
+    check hello2A == hello2B
+    var factorial2A: Field; var factorial2B = Field(x: 0, lx: 15, ly: 2,lines: @[
+      Line(x:0, l:15, columns: @['&', '>', ':', '1', '-', ':', 'v', ' ', 'v', ' ', '*', '_', '$', '.', '@'].cols),
+      Line(x:1, l:11, columns: @['^', ' ', ' ', ' ', ' ', '_', '$', '>', '\\', ':', '^'].cols)
+    ])
+    check factorial2A.load("examples/factorial.b98") == true
+    check factorial2A == factorial2B
+    var dna2A: Field; var dna2B = Field(x: 0, lx: 7, ly: 8,lines: @[
+      Line(x:0, l:7, columns: @['7', '^', 'D', 'N', '>', 'v', 'A'].cols),
+      Line(x:0, l:7, columns: @['v', '_', '#', 'v', '?', ' ', 'v'].cols),
+      Line(x:0, l:7, columns: @['7', '^', '<', '"', '"', '"', '"'].cols),
+      Line(x:0, l:7, columns: @['3', ' ', ' ', 'A', 'C', 'G', 'T'].cols),
+      Line(x:0, l:7, columns: @['9', '0', '!', '"', '"', '"', '"'].cols),
+      Line(x:0, l:7, columns: @['4', '*', ':', '>', '>', '>', 'v'].cols),
+      Line(x:0, l:7, columns: @['+', '8', '^', '-', '1', ',', '<'].cols),
+      Line(x:0, l:7, columns: @['>', ' ', ',', '+', ',', '@', ')'].cols),
+    ])
+    check dna2A.load("examples/dna.b98") == true
+    check dna2A == dna2B
+  test "set":
+    var f = Field(x: 0, y: 0, lx: 1, ly: 1, lines: @[Line(x: 0, l: 1, columns: @['>'].cols)])
+    f.set(0,0,int('@'))
+    check f == minimal
+    f.set(1,0,int(' '))
+    check f == minimal
+    const xappend = Field(x: 0, y: 0, lx: 5, ly: 1, lines: @[Line(x: 0, l: 5, columns: @[int('@'), 32, 32, 32, int('r')])])
+    f.set(4, 0, int('r'))
+    check f == xappend
+    const xprepend = Field(x: -2, y: 0, lx: 7, ly: 1, lines: @[Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')])])
+    f.set(-2, 0, int('l'))
+    check f == xprepend
+    const yappend = Field(x: -2, y: 0, lx: 8, ly: 3, lines: @[
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.set(5, 2, int('d'))
+    check f == yappend
+    const yprepend = Field(x: -2, y: -3, lx: 11, ly: 6, lines: @[
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.set(8, -3, int('u'))
+    check f == yprepend
+    const xappendEmptyline = Field(x: -2, y: -3, lx: 12, ly: 6, lines: @[
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 1, columns: @[int('e')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.set(9, -2, int('e'))
+    check f == xappendEmptyline
+    const xprependEmptyline = Field(x: -3, y: -3, lx: 13, ly: 6, lines: @[
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 1, columns: @[int('e')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: -3, l: 1, columns: @[int('f')]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.set(-3, 1, int('f'))
+    check f == xprependEmptyline
+    const xprependyprepend = Field(x: -5, y: -5, lx: 15, ly: 8, lines: @[
+      Line(x: -5, l: 1, columns: @[int('x')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 1, columns: @[int('e')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: -3, l: 1, columns: @[int('f')]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+    ])
+    f.set(-5, -5, int('x'))
+    check f == xprependyprepend
+    const xprependyappend = Field(x: -7, y: -5, lx: 17, ly: 10, lines: @[
+      Line(x: -5, l: 1, columns: @[int('x')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: 8, l: 1, columns: @[int('u')]),
+      Line(x: 9, l: 1, columns: @[int('e')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
+      Line(x: -3, l: 1, columns: @[int('f')]),
+      Line(x: 5, l: 1, columns: @[int('d')]),
+      Line(x: 0, l: 0, columns: @[]),
+      Line(x: -7, l: 1, columns: @[int('y')]),
+    ])
+    f.set(-7, 4, int('y'))
+    check f == xprependyappend
diff --git a/tests/testField.nim b/tests/testField.nim
deleted file mode 100644
index c1def19..0000000
--- a/tests/testField.nim
+++ /dev/null
@@ -1,220 +0,0 @@
-import unittest
-
-include field
-
-func `==`(a, b: Line): bool = a.x == b.x and a.l == b.l and a.columns == b.columns
-func `==`(a, b: Field): bool = a.x == b.x and a.lx == b.lx and a.y == b.y and a.ly == b.ly and a.lines == b.lines
-func cols(a: openarray[char]): seq[int] =
-  result.setlen(a.len)
-  for i in 0..<a.len:
-    result[i] = a[i].int()
-
-const minimal = Field(x: 0, y: 0, lx: 1, ly: 1, lines: @[Line(x: 0, l: 1, columns: @[int('@')])])
-
-suite "Field":
-  test "Field.blank":
-    var f = Field(x: -7, y: -5, lx: 17, ly: 10, lines: @[
-      Line(x: -5, l: 1, columns: @[int('x')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 1, columns: @[int('e')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), int('z'), 32, 32, int('r')]),
-      Line(x: -3, l: 1, columns: @[int('f')]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -7, l: 1, columns: @[int('y')]),
-    ])
-    const moinsz = Field(x: -7, y: -5, lx: 17, ly: 10, lines: @[
-      Line(x: -5, l: 1, columns: @[int('x')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 1, columns: @[int('e')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: -3, l: 1, columns: @[int('f')]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -7, l: 1, columns: @[int('y')]),
-    ])
-    f.blank(1, 0)
-    check f == moinsz
-    const moinsy = Field(x: -5, y: -5, lx: 15, ly: 8, lines: @[
-      Line(x: -5, l: 1, columns: @[int('x')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 1, columns: @[int('e')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: -3, l: 1, columns: @[int('f')]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.blank(-7, 4)
-    check f == moinsy
-    const moinsx = Field(x: -3, y: -3, lx: 13, ly: 6, lines: @[
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 1, columns: @[int('e')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: -3, l: 1, columns: @[int('f')]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.blank(-5, -5)
-    check f == moinsx
-    const moinsf = Field(x: -2, y: -3, lx: 12, ly: 6, lines: @[
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 1, columns: @[int('e')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: -3, l: 0, columns: @[]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.blank(-3, 1)
-    check f == moinsf
-    const moinse = Field(x: -2, y: -3, lx: 11, ly: 6, lines: @[
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 0, columns: @[]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: -3, l: 0, columns: @[]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.blank(9, -2)
-    check f == moinse
-    const moinsu = Field(x: -2, y: 0, lx: 8, ly: 3, lines: @[
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: -3, l: 0, columns: @[]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.blank(8, -3)
-    check f == moinsu
-    const moinsd = Field(x: -2, y: 0, lx: 7, ly: 1, lines: @[Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')])])
-    f.blank(5, 2)
-    check f == moinsd
-    const moinsl = Field(x: 0, y: 0, lx: 5, ly: 1, lines: @[Line(x: 0, l: 5, columns: @[int('@'), 32, 32, 32, int('r')])])
-    f.blank(-2,0)
-    check f == moinsl
-    const moinsr = Field(x: 0, y: 0, lx: 1, ly: 1, lines: @[Line(x: 0, l: 1, columns: @[int('@')])])
-    f.blank(4,0)
-    check f == moinsr
-  test "Field.get":
-    check minimal.get(0,0) == int('@')
-    check minimal.get(1,0) == int(' ')
-  test "Field.isIn":
-    check minimal.isIn(0, 0) == true
-    check minimal.isIn(1, 0) == false
-  test "Field.load":
-    var nonexistant: Field
-    check nonexistant.load("nonexistant") == false
-    var invalid: Field
-    check invalid.load("examples/invalid.b98") == false
-    var empty: Field
-    check empty.load("examples/empty.b98") == false
-    var min: Field
-    check min.load("examples/minimal.b98") == true
-    check min == minimal
-    var hello1A: Field; var hello1B = Field(lx: 24, ly: 1, lines: @[Line(l:24, columns: @['6', '4', '+', '"', '!', 'd', 'l', 'r', 'o', 'W', ' ', ',', 'o', 'l', 'l', 'e', 'H', '"', '>', ':', '#', ',', '_', '@'].cols)])
-    check hello1A.load("examples/hello.b98") == true
-    check hello1A == hello1B
-    var rn: Field
-    check rn.load("examples/rn.b98") == true
-    check rn == hello1B
-    var hello2A: Field; var hello2B = Field(x: 1, lx: 33, ly: 2,lines: @[
-      Line(x:33, l:1, columns: @['v'].cols),
-      Line(x:1, l:33, columns: @['@', ' ', '>', ' ', '#', ';', '>', ':', '#', ',', '_', 'e', '-', 'j', ';', ' ', '"', 'H', 'e', 'l', 'l', 'o', ' ', 'w', 'o', 'r', 'l', 'd', '!', '"', 'd', 'a', '<'].cols)
-    ])
-    check hello2A.load("examples/hello2.b98") == true
-    check hello2A == hello2B
-    var factorial2A: Field; var factorial2B = Field(x: 0, lx: 15, ly: 2,lines: @[
-      Line(x:0, l:15, columns: @['&', '>', ':', '1', '-', ':', 'v', ' ', 'v', ' ', '*', '_', '$', '.', '@'].cols),
-      Line(x:1, l:11, columns: @['^', ' ', ' ', ' ', ' ', '_', '$', '>', '\\', ':', '^'].cols)
-    ])
-    check factorial2A.load("examples/factorial.b98") == true
-    check factorial2A == factorial2B
-    var dna2A: Field; var dna2B = Field(x: 0, lx: 7, ly: 8,lines: @[
-      Line(x:0, l:7, columns: @['7', '^', 'D', 'N', '>', 'v', 'A'].cols),
-      Line(x:0, l:7, columns: @['v', '_', '#', 'v', '?', ' ', 'v'].cols),
-      Line(x:0, l:7, columns: @['7', '^', '<', '"', '"', '"', '"'].cols),
-      Line(x:0, l:7, columns: @['3', ' ', ' ', 'A', 'C', 'G', 'T'].cols),
-      Line(x:0, l:7, columns: @['9', '0', '!', '"', '"', '"', '"'].cols),
-      Line(x:0, l:7, columns: @['4', '*', ':', '>', '>', '>', 'v'].cols),
-      Line(x:0, l:7, columns: @['+', '8', '^', '-', '1', ',', '<'].cols),
-      Line(x:0, l:7, columns: @['>', ' ', ',', '+', ',', '@', ')'].cols),
-    ])
-    check dna2A.load("examples/dna.b98") == true
-    check dna2A == dna2B
-  test "Field.set":
-    var f = Field(x: 0, y: 0, lx: 1, ly: 1, lines: @[Line(x: 0, l: 1, columns: @['>'].cols)])
-    f.set(0,0,int('@'))
-    check f == minimal
-    f.set(1,0,int(' '))
-    check f == minimal
-    const xappend = Field(x: 0, y: 0, lx: 5, ly: 1, lines: @[Line(x: 0, l: 5, columns: @[int('@'), 32, 32, 32, int('r')])])
-    f.set(4, 0, int('r'))
-    check f == xappend
-    const xprepend = Field(x: -2, y: 0, lx: 7, ly: 1, lines: @[Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')])])
-    f.set(-2, 0, int('l'))
-    check f == xprepend
-    const yappend = Field(x: -2, y: 0, lx: 8, ly: 3, lines: @[
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.set(5, 2, int('d'))
-    check f == yappend
-    const yprepend = Field(x: -2, y: -3, lx: 11, ly: 6, lines: @[
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.set(8, -3, int('u'))
-    check f == yprepend
-    const xappendEmptyline = Field(x: -2, y: -3, lx: 12, ly: 6, lines: @[
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 1, columns: @[int('e')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.set(9, -2, int('e'))
-    check f == xappendEmptyline
-    const xprependEmptyline = Field(x: -3, y: -3, lx: 13, ly: 6, lines: @[
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 1, columns: @[int('e')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: -3, l: 1, columns: @[int('f')]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.set(-3, 1, int('f'))
-    check f == xprependEmptyline
-    const xprependyprepend = Field(x: -5, y: -5, lx: 15, ly: 8, lines: @[
-      Line(x: -5, l: 1, columns: @[int('x')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 1, columns: @[int('e')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: -3, l: 1, columns: @[int('f')]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-    ])
-    f.set(-5, -5, int('x'))
-    check f == xprependyprepend
-    const xprependyappend = Field(x: -7, y: -5, lx: 17, ly: 10, lines: @[
-      Line(x: -5, l: 1, columns: @[int('x')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: 8, l: 1, columns: @[int('u')]),
-      Line(x: 9, l: 1, columns: @[int('e')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -2, l: 7, columns: @[int('l'), 32, int('@'), 32, 32, 32, int('r')]),
-      Line(x: -3, l: 1, columns: @[int('f')]),
-      Line(x: 5, l: 1, columns: @[int('d')]),
-      Line(x: 0, l: 0, columns: @[]),
-      Line(x: -7, l: 1, columns: @[int('y')]),
-    ])
-    f.set(-7, 4, int('y'))
-    check f == xprependyappend
-- 
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