WIP on cache tools

features/cache_dump.feature

@@ -28,3 +28,22 @@ Feature: cache_dump
       {-h|--help}
       {-V|--version}
     """
+
+  Scenario: accepts an output file
+    Given valid cache metadata
+    When I run cache_dump with -o metadata.xml metadata.bin
+    Then it should pass
+
+  Scenario: missing input file
+    When I run cache_dump
+    Then it should fail with:
+    """
+    No input file provided.
+    """  
+
+  Scenario: dump/restore is a noop
+    Given valid cache metadata
+    When I cache_dump
+    And I cache_restore
+    And I cache_dump
+    Then cache dumps 1 and 2 should be identical

features/cache_restore.feature

@@ -40,6 +40,10 @@ Feature: thin_restore
     No input file provided.
     """
 
+  Scenario: input file not found
+    When I run cache_restore with -i foo.xml -o metadata.bin
+    Then it should fail
+
   Scenario: missing output file
     When I run cache_restore with -i metadata.xml
     Then it should fail with:
@@ -47,9 +51,8 @@ Feature: thin_restore
     No output file provided.
     """
 
-  Scenario: dump/restore is a noop
-    Given valid cache metadata
-    When I dump cache
-    And I restore cache
-    And I dump cache
-    Then cache dumps 1 and 2 should be identical
+  Scenario: successfully restores a valid xml file
+    Given a small xml file
+    And an empty dev file
+    When I run cache_restore with -i metadata.xml -o metadata.bin
+    Then it should pass

features/step_definitions/cache_steps.rb

@@ -64,22 +64,41 @@ When(/^I run cache_restore with (.*?)$/) do |opts|
   run_simple("cache_restore #{opts}", false)
 end
 
+When(/^I run cache_dump$/) do
+  run_simple("cache_dump", false)
+end
+
 When(/^I run cache_dump with (.*?)$/) do |opts|
   run_simple("cache_dump #{opts}", false)
 end
 
 Given(/^valid cache metadata$/) do
-  pending # express the regexp above with the code you wish you had
-end
+  in_current_dir do
+    system("cache_xml create --nr-cache-blocks uniform[1000-5000] --nr-mappings uniform[500-1000] > #{xml_file}")
+  end
 
-When(/^I dump cache$/) do
-  pending # express the regexp above with the code you wish you had
-end
-
-When(/^I restore cache$/) do
-  pending # express the regexp above with the code you wish you had
+  run_simple("dd if=/dev/zero of=#{dev_file} bs=4k count=1024")
+  run_simple("cache_restore -i #{xml_file} -o #{dev_file}")
 end
 
 Then(/^cache dumps (\d+) and (\d+) should be identical$/) do |arg1, arg2|
-  pending # express the regexp above with the code you wish you had
+  run_simple("diff -ub #{dump_files[d1.to_i]} #{dump_files[d2.to_i]}", true)
+end
+
+Given(/^a small xml file$/) do
+  in_current_dir do
+    system("cache_xml create --nr-cache-blocks 3 --nr-mappings 3 --layout linear --dirty-percent 100 > #{xml_file}")
+  end
+end
+
+Given(/^an empty dev file$/) do
+  run_simple("dd if=/dev/zero of=#{dev_file} bs=4k count=1024")
+end
+
+When(/^I cache_dump$/) do
+  run_simple("cache_dump #{dev_file} -o #{new_dump_file}", true)
+end
+
+When(/^I cache_restore$/) do
+  run_simple("cache_restore -i #{dump_files[-1]} -o #{dev_file}", true)
 end