test for creating checksum files given a path

Author: niquerio

lib/stage/generate_checksums.rb

@@ -4,8 +4,10 @@
 require "stage"
 
 module ChecksumFileGenerator
-  def self.write
-    true
+  def self.write(path)
+    FileUtils.cd(path) do
+      `md5sum * > checksum.md5`
+    end
   end
 end
 

spec/stage/generate_checksums_spec.rb

@@ -1,7 +1,11 @@
 describe ChecksumFileGenerator do
+  include_context "uses temp dir"
   context ".write" do
-    it "returns true" do
-      expect(described_class.write).to eq(true)
+    it "writes an checksum.md5 file for files in a given directory" do
+      FileUtils.cp("spec/fixtures/10_10_8_400.jp2", temp_dir_path)
+      described_class.write(temp_dir_path)
+      checksum_contents = File.read(File.join(temp_dir_path, "checksum.md5"))
+      expect(checksum_contents).to include("  10_10_8_400.jp2")
     end
   end
 end