initial commit! ヽ(^o^)丿

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diff --git a/spec/xdg_basedir_spec.cr b/spec/xdg_basedir_spec.cr
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+require "./spec_helper"
+
+# NOTE: these tests are non-exhaustive and may fail, as they depend on the
+# state of the filesystem and environment
+describe XDGBasedir do
+
+  it "finds previously written files using full_path" do
+    p = XDGBasedir.full_path "xdg_basedir_test_file_1", :data, "w"
+    unless p
+      next
+    end
+    File.write p, "content"
+
+    p = XDGBasedir.full_path "xdg_basedir_test_file_1", :data, "r"
+    unless p
+      next
+    end
+
+    s = File.read p
+    f = File.new p
+    f.delete
+
+    s.should eq("content")
+  end
+
+  it "finds previously written files using dir methods" do
+    d = XDGBasedir.write_dir :config
+    unless d
+      next
+    end
+    File.write "#{d}xdg_basedir_test_file_2" , "content"
+
+    l = XDGBasedir.read_dirs :config
+    unless l
+      next
+    end
+
+    s = File.read "#{l[0]}xdg_basedir_test_file_2"
+    f = File.new "#{d}xdg_basedir_test_file_2"
+    f.delete
+
+    s.should eq("content")
+  end
+
+  it "fails on bad arguments" do
+    expect_raises(ArgumentError) { XDGBasedir.write_dir :bad }
+    expect_raises(ArgumentError) { XDGBasedir.read_dirs :bad }
+    expect_raises(ArgumentError) { XDGBasedir.full_path "rel_path", :bad }
+  end
+end