test(tiger): import upstream tests

tests/indent/tiger/classes.tig

@@ -0,0 +1,14 @@
+class A {
+  var a := 12
+
+  method method() : int = 1
+}
+
+type B = class extends A {
+  var b := 27
+
+  method another_method() = (
+    print("called");
+    self.b + self.method()
+  )
+}

tests/indent/tiger/control-flow.tig

@@ -0,0 +1,22 @@
+(
+  if
+    12
+  then
+    27
+  else
+    42
+  ;
+
+  for
+    i := 12
+  to
+    27
+  do
+    42
+  ;
+
+  while
+    0
+  do
+    break
+)

tests/indent/tiger/functions.tig

@@ -0,0 +1,14 @@
+primitive long_parameter_list(
+  a: int,
+  b: string,
+  c: type
+)
+
+function f() =
+  (
+    long_parameter_list(
+      1,
+      "2",
+      nil
+    )
+  )

tests/indent/tiger/groupings.tig

@@ -0,0 +1,10 @@
+let
+  var a := 42
+in
+  (
+    12;
+    27;
+    42
+  );
+  a
+end

tests/indent/tiger/values-and-expressions.tig

@@ -0,0 +1,30 @@
+let
+  type array_of_int = array of int
+
+  type record = {
+    a: int,
+    b: string,
+    c: type
+  }
+
+  var a :=
+    "a string"
+in
+  array[
+    12
+  ]
+  ;
+
+  array_of_int[
+    27
+  ]
+  of
+    42
+  ;
+
+  record {
+    a = 1,
+    b = "2",
+    c = nil
+  }
+end

tests/indent/tiger_spec.lua

@@ -0,0 +1,138 @@
+local Runner = require("tests.indent.common").Runner
+local XFAIL = require("tests.indent.common").XFAIL
+
+local runner = Runner:new(it, "tests/indent/tiger", {
+  tabstop = 2,
+  shiftwidth = 2,
+  softtabstop = 0,
+  expandtab = true,
+})
+
+describe("indent Tiger:", function()
+  describe("whole file:", function()
+    runner:whole_file "."
+  end)
+
+  describe("new line:", function()
+    runner:new_line(
+      "classes.tig",
+      { on_line = 1, text = "var a := 0", indent = 2 },
+      "class declaration beginning",
+      XFAIL
+    )
+    runner:new_line("classes.tig", { on_line = 2, text = "var a := 0", indent = 2 }, "class declaration after field")
+    runner:new_line("classes.tig", { on_line = 4, text = "var a := 0", indent = 2 }, "class declaration after method")
+    runner:new_line("classes.tig", { on_line = 5, text = "var a := 0", indent = 0 }, "after class declaration")
+    runner:new_line("classes.tig", { on_line = 7, text = "var a := 0", indent = 2 }, "class type beginning", XFAIL)
+    runner:new_line("classes.tig", { on_line = 8, text = "var a := 0", indent = 2 }, "class type after field")
+    runner:new_line("classes.tig", { on_line = 10, text = "self.a := 0", indent = 4 }, "inside method", XFAIL)
+    runner:new_line("classes.tig", { on_line = 13, text = "var a := 0", indent = 2 }, "class type after method")
+    runner:new_line("classes.tig", { on_line = 14, text = "var a := 0", indent = 0 }, "after class type")
+
+    runner:new_line("control-flow.tig", { on_line = 2, text = "true", indent = 4 }, "if condition", XFAIL)
+    runner:new_line("control-flow.tig", { on_line = 4, text = "true", indent = 4 }, "if consequence", XFAIL)
+    runner:new_line("control-flow.tig", { on_line = 4, text = "true", indent = 4 }, "if alternative", XFAIL)
+    runner:new_line("control-flow.tig", { on_line = 10, text = "start := 0", indent = 4 }, "for index start", XFAIL)
+    runner:new_line("control-flow.tig", { on_line = 12, text = "the_end", indent = 4 }, "for index end", XFAIL)
+    runner:new_line("control-flow.tig", { on_line = 14, text = "break", indent = 4 }, "for body", XFAIL)
+    runner:new_line("control-flow.tig", { on_line = 18, text = "true", indent = 4 }, "while condition", XFAIL)
+    runner:new_line("control-flow.tig", { on_line = 20, text = "break", indent = 4 }, "while body", XFAIL)
+
+    runner:new_line(
+      "functions.tig",
+      { on_line = 1, text = "parameter: int,", indent = 2 },
+      "parameter list beginning",
+      XFAIL
+    )
+    runner:new_line("functions.tig", { on_line = 2, text = "parameter: int,", indent = 2 }, "parameter list middle")
+    runner:new_line("functions.tig", { on_line = 4, text = ",parameter: int", indent = 2 }, "parameter list end")
+    runner:new_line("functions.tig", { on_line = 5, text = "var a := 0", indent = 0 }, "after parameter list")
+    runner:new_line("functions.tig", { on_line = 7, text = "print(a)", indent = 2 }, "function body", XFAIL)
+    runner:new_line("functions.tig", { on_line = 9, text = "a,", indent = 6 }, "function call beginning", XFAIL)
+    runner:new_line("functions.tig", { on_line = 10, text = "a,", indent = 6 }, "function call middle")
+    runner:new_line("functions.tig", { on_line = 12, text = ",a", indent = 6 }, "function call end")
+    runner:new_line("functions.tig", { on_line = 13, text = "; print(a)", indent = 4 }, "after function call")
+    runner:new_line(
+      "functions.tig",
+      { on_line = 14, text = "var a := 12", indent = 0 },
+      "after function declaration",
+      XFAIL
+    )
+
+    runner:new_line("groupings.tig", { on_line = 2, text = "var b := 0", indent = 2 }, "let declarations")
+    runner:new_line("groupings.tig", { on_line = 3, text = "a := a + 1", indent = 2 }, "after 'in'", XFAIL)
+    runner:new_line("groupings.tig", { on_line = 4, text = "a := a + 1;", indent = 4 }, "sequence", XFAIL)
+    runner:new_line("groupings.tig", { on_line = 8, text = "a := a + 1;", indent = 2 }, "after sequence")
+    runner:new_line("groupings.tig", { on_line = 10, text = "+ 1", indent = 0 }, "after 'end'")
+
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 4, text = "field: record,", indent = 4 },
+      "record type beginning",
+      XFAIL
+    )
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 5, text = "field: record,", indent = 4 },
+      "record type middle"
+    )
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 7, text = ",field: record", indent = 4 },
+      "record type end"
+    )
+    runner:new_line("values-and-expressions.tig", { on_line = 8, text = "var a := 0", indent = 2 }, "after record type")
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 10, text = "0", indent = 4 },
+      "variable declaration init value",
+      XFAIL
+    )
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 11, text = "+ a", indent = 4 },
+      "variable declaration init follow-up"
+    )
+    runner:new_line("values-and-expressions.tig", { on_line = 13, text = "a", indent = 4 }, "array index", XFAIL)
+    runner:new_line("values-and-expressions.tig", { on_line = 14, text = "+ a", indent = 4 }, "array index follow-up")
+    runner:new_line("values-and-expressions.tig", { on_line = 15, text = "+ a", indent = 2 }, "after array value")
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 18, text = "a", indent = 4 },
+      "array expression size",
+      XFAIL
+    )
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 20, text = "of", indent = 2 },
+      "array expression after size"
+    )
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 21, text = "a", indent = 4 },
+      "array expression init value",
+      XFAIL
+    )
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 25, text = "field = 0,", indent = 4 },
+      "record expression beginning",
+      XFAIL
+    )
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 26, text = "field = 0,", indent = 4 },
+      "record expression middle"
+    )
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 28, text = ",field = 0", indent = 4 },
+      "record expression end"
+    )
+    runner:new_line(
+      "values-and-expressions.tig",
+      { on_line = 29, text = "a := 0", indent = 2 },
+      "after record expression"
+    )
+  end)
+end)