Improved test coverage for RemoteDependency

test/deploy/remote_dependency_test.rb

@@ -0,0 +1,114 @@
+require "utils"
+require 'capistrano/recipes/deploy/remote_dependency'
+
+class RemoteDependencyTest < Test::Unit::TestCase
+  def setup
+    @config = { }
+    @dependency = Capistrano::Deploy::RemoteDependency.new(@config)
+  end
+
+  def test_should_use_standard_error_message_for_directory
+    setup_for_a_configuration_run("test -d /data", false)
+    @dependency.directory("/data")
+    assert_equal "`/data' is not a directory (host)", @dependency.message
+  end
+
+  def test_should_use_standard_error_message_for_file
+    setup_for_a_configuration_run("test -f /data/foo.txt", false)
+    @dependency.file("/data/foo.txt")
+    assert_equal "`/data/foo.txt' is not a file (host)", @dependency.message
+  end
+
+  def test_should_use_standard_error_message_for_writable
+    setup_for_a_configuration_run("test -w /data/foo.txt", false)
+    @dependency.writable("/data/foo.txt")
+    assert_equal "`/data/foo.txt' is not writable (host)", @dependency.message
+  end
+
+  def test_should_use_standard_error_message_for_command
+    setup_for_a_configuration_run("which cat", false)
+    @dependency.command("cat")
+    assert_equal "`cat' could not be found in the path (host)", @dependency.message
+  end
+
+  def test_should_use_standard_error_message_for_gem
+    setup_for_a_configuration_gem_run("capistrano", "9.9", false)
+    @dependency.gem("capistrano", 9.9)
+    assert_equal "gem `capistrano' 9.9 could not be found (host)", @dependency.message
+  end
+
+  def test_should_fail_if_directory_not_found
+    setup_for_a_configuration_run("test -d /data", false)
+    assert !@dependency.directory("/data").pass?
+  end
+
+  def test_should_pass_if_directory_found
+    setup_for_a_configuration_run("test -d /data", true)
+    assert @dependency.directory("/data").pass?
+  end
+
+  def test_should_fail_if_file_not_found
+    setup_for_a_configuration_run("test -f /data/foo.txt", false)
+    assert !@dependency.file("/data/foo.txt").pass?
+  end
+
+  def test_should_pas_if_file_found
+    setup_for_a_configuration_run("test -f /data/foo.txt", true)
+    assert @dependency.file("/data/foo.txt").pass?
+  end
+
+  def test_should_fail_if_writable_not_found
+    setup_for_a_configuration_run("test -w /data/foo.txt", false)
+    assert !@dependency.writable("/data/foo.txt").pass?
+  end
+
+  def test_should_pass_if_writable_found
+    setup_for_a_configuration_run("test -w /data/foo.txt", true)
+    assert @dependency.writable("/data/foo.txt").pass?
+  end
+
+  def test_should_fail_if_command_not_found
+    setup_for_a_configuration_run("which cat", false)
+    assert !@dependency.command("cat").pass?
+  end
+
+  def test_should_pass_if_command_found
+    setup_for_a_configuration_run("which cat", true)
+    assert @dependency.command("cat").pass?
+  end
+
+  def test_should_fail_if_gem_not_found
+    setup_for_a_configuration_gem_run("capistrano", "9.9", false)
+    assert !@dependency.gem("capistrano", 9.9).pass?
+  end
+
+  def test_should_pass_if_gem_found
+    setup_for_a_configuration_gem_run("capistrano", "9.9", true)
+    assert @dependency.gem("capistrano", 9.9).pass?
+  end
+
+  def test_should_use_alternative_message_if_provided
+    setup_for_a_configuration_run("which cat", false)
+    @dependency.command("cat").or("Sorry")
+    assert_equal "Sorry (host)", @dependency.message
+  end
+
+  private
+
+  def setup_for_a_configuration_run(command, passing)
+    expectation = @config.expects(:run).with(command, {})
+    if passing
+      expectation.returns(true)
+    else
+      error = Capistrano::CommandError.new
+      error.expects(:hosts).returns(["host"])
+      expectation.raises(error)
+    end
+  end
+
+  def setup_for_a_configuration_gem_run(name, version, passing)
+    @config.expects(:fetch).with(:gem_command, "gem").returns("gem")
+    find_gem_cmd = "gem specification --version '#{version}' #{name} 2>&1 | awk 'BEGIN { s = 0 } /^name:/ { s = 1; exit }; END { if(s == 0) exit 1 }'"
+    setup_for_a_configuration_run(find_gem_cmd, passing)
+  end
+end