matching_brackets

elixir/matching-brackets/test/matching_brackets_test.exs

@@ -0,0 +1,85 @@
+defmodule MatchingBracketsTest do
+  use ExUnit.Case
+
+  test "paired square brackets" do
+    assert MatchingBrackets.check_brackets("[]")
+  end
+
+  test "empty string" do
+    assert MatchingBrackets.check_brackets("")
+  end
+
+  test "unpaired brackets" do
+    refute MatchingBrackets.check_brackets("[[")
+  end
+
+  test "wrong ordered brackets" do
+    refute MatchingBrackets.check_brackets("}{")
+  end
+
+  test "wrong closing bracket" do
+    refute MatchingBrackets.check_brackets("{]")
+  end
+
+  test "paired with whitespace" do
+    assert MatchingBrackets.check_brackets("{ }")
+  end
+
+  test "partially paired brackets" do
+    refute MatchingBrackets.check_brackets("{[])")
+  end
+
+  test "simple nested brackets" do
+    assert MatchingBrackets.check_brackets("{[]}")
+  end
+
+  test "several paired brackets" do
+    assert MatchingBrackets.check_brackets("{}[]")
+  end
+
+  test "paired and nested brackets" do
+    assert MatchingBrackets.check_brackets("([{}({}[])])")
+  end
+
+  test "unopened closing brackets" do
+    refute MatchingBrackets.check_brackets("{[)][]}")
+  end
+
+  test "unpaired and nested brackets" do
+    refute MatchingBrackets.check_brackets("([{])")
+  end
+
+  test "paired and wrong nested brackets" do
+    refute MatchingBrackets.check_brackets("[({]})")
+  end
+
+  test "paired and wrong nested brackets but innermost are correct" do
+    refute MatchingBrackets.check_brackets("[({}])")
+  end
+
+  test "paired and incomplete brackets" do
+    refute MatchingBrackets.check_brackets("{}[")
+  end
+
+  test "too many closing brackets" do
+    refute MatchingBrackets.check_brackets("[]]")
+  end
+
+  test "early unexpected brackets" do
+    refute MatchingBrackets.check_brackets(")()")
+  end
+
+  test "early mismatched brackets" do
+    refute MatchingBrackets.check_brackets("{)()")
+  end
+
+  test "math expression" do
+    assert MatchingBrackets.check_brackets("(((185 + 223.85) * 15) - 543)/2")
+  end
+
+  test "complex latex expression" do
+    assert MatchingBrackets.check_brackets(
+             "\\left(\\begin{array}{cc} \\frac{1}{3} & x\\\\ \\mathrm{e}^{x} &... x^2 \\end{array}\\right)"
+           )
+  end
+end

elixir/matching-brackets/test/test_helper.exs

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+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true)