13 files changed, 116 insertions, 0 deletions

diff --git a/bin/tests/data/bool_comparison.nix b/bin/tests/data/bool_comparison.nix
new file mode 100644
index 0000000..dee2d08
--- /dev/null
+++ b/bin/tests/data/bool_comparison.nix
@@ -0,0 +1,13 @@
+[
+  # trivial
+  (a == true)
+  (b == true)
+  (true == c)
+  (true == d)
+
+  # not equals
+  (e != true)
+  (f != false)
+  (true != g)
+  (false != h)
+]
diff --git a/bin/tests/data/collapsible_let_in.nix b/bin/tests/data/collapsible_let_in.nix
new file mode 100644
index 0000000..7b41014
--- /dev/null
+++ b/bin/tests/data/collapsible_let_in.nix
@@ -0,0 +1,9 @@
+let
+  a = 2;
+  b = 3;
+in
+  let
+    c = 5;
+    d = 6;
+  in
+  a + b + c + d
diff --git a/bin/tests/data/deprecated_is_null.nix b/bin/tests/data/deprecated_is_null.nix
new file mode 100644
index 0000000..42596d7
--- /dev/null
+++ b/bin/tests/data/deprecated_is_null.nix
@@ -0,0 +1,6 @@
+let
+  e = null;
+in
+if isNull e
+then "no"
+else "yes"
diff --git a/bin/tests/data/empty_let_in.nix b/bin/tests/data/empty_let_in.nix
new file mode 100644
index 0000000..3ecb6e4
--- /dev/null
+++ b/bin/tests/data/empty_let_in.nix
@@ -0,0 +1,3 @@
+let
+in
+  null
diff --git a/bin/tests/data/empty_pattern.nix b/bin/tests/data/empty_pattern.nix
new file mode 100644
index 0000000..23d99e8
--- /dev/null
+++ b/bin/tests/data/empty_pattern.nix
@@ -0,0 +1,9 @@
+[
+  # match
+  ({ ... }: 42)
+
+  # don't match
+  ({ a, ... }: a)
+  ({ ... } @ inputs: inputs)
+]
+
diff --git a/bin/tests/data/eta_reduction.nix b/bin/tests/data/eta_reduction.nix
new file mode 100644
index 0000000..e717ee7
--- /dev/null
+++ b/bin/tests/data/eta_reduction.nix
@@ -0,0 +1,18 @@
+let
+  double = x: x * 2;
+  inherit (builtins) map;
+  xs = [ 1 2 3 ];
+  f = {
+    inherit double;
+    val = 2;
+  };
+in
+[
+  (map (x: double x) xs)
+
+  # don't lint on non-free exprs
+  (map (f: f.double f.val) [ f ])
+
+  # other non-free forms
+  (map (f: {inherit f;}.double f.val) [ f ])
+]
diff --git a/bin/tests/data/legacy_let_syntax.nix b/bin/tests/data/legacy_let_syntax.nix
new file mode 100644
index 0000000..46e3191
--- /dev/null
+++ b/bin/tests/data/legacy_let_syntax.nix
@@ -0,0 +1,5 @@
+let {
+  body = x + y;
+  x = "hello,";
+  y = " world!";
+}
diff --git a/bin/tests/data/manual_inherit.nix b/bin/tests/data/manual_inherit.nix
new file mode 100644
index 0000000..53ae4d7
--- /dev/null
+++ b/bin/tests/data/manual_inherit.nix
@@ -0,0 +1,12 @@
+let
+  a = 2;
+  y = "y";
+in
+{
+  # trivial
+  a = a;
+
+  # don't lint
+  x.y = y;
+}
+
diff --git a/bin/tests/data/manual_inherit_from.nix b/bin/tests/data/manual_inherit_from.nix
new file mode 100644
index 0000000..214b2a3
--- /dev/null
+++ b/bin/tests/data/manual_inherit_from.nix
@@ -0,0 +1,8 @@
+let
+  a = {b = 2; c = 3;};
+in
+{
+  b = a.b;
+  c = a.c;
+}
+
diff --git a/bin/tests/data/redundant_pattern_bind.nix b/bin/tests/data/redundant_pattern_bind.nix
new file mode 100644
index 0000000..d328c50
--- /dev/null
+++ b/bin/tests/data/redundant_pattern_bind.nix
@@ -0,0 +1 @@
+{ ... }  @ inputs: null
diff --git a/bin/tests/data/unquoted_splices.nix b/bin/tests/data/unquoted_splices.nix
new file mode 100644
index 0000000..30935b0
--- /dev/null
+++ b/bin/tests/data/unquoted_splices.nix
@@ -0,0 +1,15 @@
+let
+  x = 2;
+  y = 3;
+  a = { "2" = y; };
+in
+[
+  ${x}
+  ${toString (x + y)}
+  a.${toString x}
+
+  # multiline test
+  ${
+    toString x
+  }
+]
diff --git a/bin/tests/data/unquoted_uri.nix b/bin/tests/data/unquoted_uri.nix
new file mode 100644
index 0000000..e56574a
--- /dev/null
+++ b/bin/tests/data/unquoted_uri.nix
@@ -0,0 +1 @@
+github:nerdypepper/statix
diff --git a/bin/tests/data/useless_parens.nix b/bin/tests/data/useless_parens.nix
new file mode 100644
index 0000000..cf26441
--- /dev/null
+++ b/bin/tests/data/useless_parens.nix
@@ -0,0 +1,16 @@
+let
+  # parens around primitives
+  a = {
+    b = ("hello");
+    c = (d);
+    e = ({ f = 2; });
+  };
+
+  # parens around let-value
+  g = (1 + 2);
+  h = ({ inherit i; });
+
+  # TODO: binary exprs, function args etc.
+in
+  # parens around let body
+  (null)