Add a bunch of specs for attribute type casting.

5 files changed, 360 insertions, 0 deletions

diff --git a/spec/attributes/boolean_spec.rb b/spec/attributes/boolean_spec.rb
new file mode 100644
index 0000000000..bb7eeb886d
--- /dev/null
+++ b/spec/attributes/boolean_spec.rb
@@ -0,0 +1,57 @@
+require 'spec_helper'
+
+module Arel
+  describe "Attributes::Boolean" do
+
+    before :all do
+      @relation = Model.build do |r|
+        r.engine Testing::Engine.new
+        r.attribute :awesome, Attributes::Boolean
+      end
+    end
+
+    def type_cast(val)
+      @relation[:awesome].type_cast(val)
+    end
+
+    describe "#type_cast" do
+      it "returns same value if passed a boolean" do
+        val = true
+        type_cast(val).should eql(val)
+      end
+
+      it "returns boolean representation (false) of nil" do
+        type_cast(nil).should eql(false)
+      end
+
+      it "returns boolean representation of 'true', 'false'" do
+        type_cast('true').should eql(true)
+        type_cast('false').should eql(false)
+      end
+
+      it "returns boolean representation of :true, :false" do
+        type_cast(:true).should eql(true)
+        type_cast(:false).should eql(false)
+      end
+
+      it "returns boolean representation of 0, 1" do
+        type_cast(1).should == true
+        type_cast(0).should == false
+      end
+
+      it "calls #to_s on arbitrary objects" do
+        obj = Object.new
+        obj.extend Module.new { def to_s ; 'true' ; end }
+        type_cast(obj).should == true
+      end
+
+      [ Object.new, 'string', '00.0', 5 ].each do |value|
+        it "raises exception when attempting type_cast of non-boolean value #{value.inspect}" do
+          lambda do
+            type_cast(value)
+          end.should raise_error(TypecastError, /could not typecast/)
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/spec/attributes/float_spec.rb b/spec/attributes/float_spec.rb
new file mode 100644
index 0000000000..3d8acbde7b
--- /dev/null
+++ b/spec/attributes/float_spec.rb
@@ -0,0 +1,119 @@
+require 'spec_helper'
+require 'bigdecimal'
+
+module Arel
+  describe "Attributes::Float" do
+
+    before :all do
+      @relation = Model.build do |r|
+        r.engine Testing::Engine.new
+        r.attribute :percentage, Attributes::Float
+      end
+    end
+
+    def type_cast(val)
+      @relation[:percentage].type_cast(val)
+    end
+
+    describe "#type_cast" do
+      it "returns same value if an float" do
+        type_cast(24.01).should eql(24.01)
+      end
+
+      it "returns nil if passed nil" do
+        type_cast(nil).should be_nil
+      end
+
+      it "returns nil if passed empty string" do
+        type_cast('').should be_nil
+      end
+
+      it "returns float representation of a zero string float" do
+        type_cast('0').should eql(0.0)
+      end
+
+      it "returns float representation of a positive string integer" do
+        type_cast('24').should eql(24.0)
+      end
+
+      it "returns float representation of a positive string integer with spaces" do
+        type_cast('  24').should eql(24.0)
+        type_cast('24  ').should eql(24.0)
+      end
+
+      it "returns float representation of a negative string float" do
+        type_cast('-24.23').should eql(-24.23)
+      end
+
+      it "returns float representation of a negative string integer with spaces" do
+        type_cast('-24 ').should eql(-24.0)
+        type_cast(' -24').should eql(-24.0)
+      end
+
+      it "returns integer representation of a zero string float" do
+        type_cast('0.0').should eql(0.0)
+      end
+
+      it "returns integer representation of a positive string float" do
+        type_cast('24.35').should eql(24.35)
+      end
+
+      it "returns integer representation of a positive string float with spaces" do
+        type_cast(' 24.35').should eql(24.35)
+        type_cast('24.35 ').should eql(24.35)
+      end
+
+      it "returns integer representation of a negative string float" do
+        type_cast('-24.35').should eql(-24.35)
+      end
+
+      it "returns integer representation of a negative string float with spaces" do
+        type_cast(' -24.35 ').should eql(-24.35)
+      end
+
+      it "returns integer representation of a zero string float, with no leading digits" do
+        type_cast('.0').should eql(0.0)
+      end
+
+      it "returns integer representation of a zero string float, with no leading digits with spaces" do
+        type_cast(' .0').should eql(0.0)
+      end
+
+      it "returns integer representation of a positive string float, with no leading digits" do
+        type_cast('.41').should eql(0.41)
+      end
+
+      it "returns integer representation of a zero float" do
+        type_cast(0.0).should eql(0.0)
+      end
+
+      it "returns integer representation of a positive float" do
+        type_cast(24.35).should eql(24.35)
+      end
+
+      it "returns integer representation of a negative float" do
+        type_cast(-24.35).should eql(-24.35)
+      end
+
+      it "returns integer representation of a zero decimal" do
+        type_cast(BigDecimal('0.0')).should eql(0.0)
+      end
+
+      it "returns integer representation of a positive decimal" do
+        type_cast(BigDecimal('24.35')).should eql(24.35)
+      end
+
+      it "returns integer representation of a negative decimal" do
+        type_cast(BigDecimal('-24.35')).should eql(-24.35)
+      end
+
+      [ Object.new, true, '00.0', '0.', 'string' ].each do |value|
+        it "raises exception when attempting type_cast of non-numeric value #{value.inspect}" do
+          lambda do
+            type_cast(value)
+          end.should raise_error(TypecastError, /could not typecast/)
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/spec/attributes/integer_spec.rb b/spec/attributes/integer_spec.rb
new file mode 100644
index 0000000000..611bbf2b24
--- /dev/null
+++ b/spec/attributes/integer_spec.rb
@@ -0,0 +1,119 @@
+require 'spec_helper'
+require 'bigdecimal'
+
+module Arel
+  describe "Attributes::Integer" do
+
+    before :all do
+      @relation = Model.build do |r|
+        r.engine Testing::Engine.new
+        r.attribute :age, Attributes::Integer
+      end
+    end
+
+    def type_cast(val)
+      @relation[:age].type_cast(val)
+    end
+
+    describe "#type_cast" do
+      it "returns same value if an integer" do
+        type_cast(24).should eql(24)
+      end
+
+      it "returns nil if passed nil" do
+        type_cast(nil).should be_nil
+      end
+
+      it "returns nil if passed empty string" do
+        type_cast('').should be_nil
+      end
+
+      it "returns integer representation of a zero string integer" do
+        type_cast('0').should eql(0)
+      end
+
+      it "returns integer representation of a positive string integer" do
+        type_cast('24').should eql(24)
+      end
+
+      it "returns integer representation of a positive string integer with spaces" do
+        type_cast('  24').should eql(24)
+        type_cast('24  ').should eql(24)
+      end
+
+      it "returns integer representation of a negative string integer" do
+        type_cast('-24').should eql(-24)
+      end
+
+      it "returns integer representation of a negative string integer with spaces" do
+        type_cast('-24 ').should eql(-24)
+        type_cast(' -24').should eql(-24)
+      end
+
+      it "returns integer representation of a zero string float" do
+        type_cast('0.0').should eql(0)
+      end
+
+      it "returns integer representation of a positive string float" do
+        type_cast('24.35').should eql(24)
+      end
+
+      it "returns integer representation of a positive string float with spaces" do
+        type_cast(' 24.35').should eql(24)
+        type_cast('24.35 ').should eql(24)
+      end
+
+      it "returns integer representation of a negative string float" do
+        type_cast('-24.35').should eql(-24)
+      end
+
+      it "returns integer representation of a negative string float with spaces" do
+        type_cast(' -24.35 ').should eql(-24)
+      end
+
+      it "returns integer representation of a zero string float, with no leading digits" do
+        type_cast('.0').should eql(0)
+      end
+
+      it "returns integer representation of a zero string float, with no leading digits with spaces" do
+        type_cast(' .0').should eql(0)
+      end
+
+      it "returns integer representation of a positive string float, with no leading digits" do
+        type_cast('.41').should eql(0)
+      end
+
+      it "returns integer representation of a zero float" do
+        type_cast(0.0).should eql(0)
+      end
+
+      it "returns integer representation of a positive float" do
+        type_cast(24.35).should eql(24)
+      end
+
+      it "returns integer representation of a negative float" do
+        type_cast(-24.35).should eql(-24)
+      end
+
+      it "returns integer representation of a zero decimal" do
+        type_cast(BigDecimal('0.0')).should eql(0)
+      end
+
+      it "returns integer representation of a positive decimal" do
+        type_cast(BigDecimal('24.35')).should eql(24)
+      end
+
+      it "returns integer representation of a negative decimal" do
+        type_cast(BigDecimal('-24.35')).should eql(-24)
+      end
+
+      [ Object.new, true, '00.0', '0.', 'string' ].each do |value|
+        it "raises exception when attempting type_cast of non-numeric value #{value.inspect}" do
+          lambda do
+            type_cast(value)
+          end.should raise_error(TypecastError, /could not typecast/)
+        end
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/spec/attributes/string_spec.rb b/spec/attributes/string_spec.rb
new file mode 100644
index 0000000000..f6d65dd045
--- /dev/null
+++ b/spec/attributes/string_spec.rb
@@ -0,0 +1,43 @@
+require 'spec_helper'
+require 'bigdecimal'
+
+module Arel
+  describe "Attributes::String" do
+
+    before :all do
+      @relation = Model.build do |r|
+        r.engine Testing::Engine.new
+        r.attribute :name, Attributes::String
+      end
+    end
+
+    def type_cast(val)
+      @relation[:name].type_cast(val)
+    end
+
+    describe "#type_cast" do
+      it "returns same value if passed a String" do
+        val = "hell"
+        type_cast(val).should eql(val)
+      end
+
+      it "returns nil if passed nil" do
+        type_cast(nil).should be_nil
+      end
+
+      it "returns String representation of Symbol" do
+        type_cast(:hello).should == "hello"
+      end
+
+      it "returns string representation of Integer" do
+        type_cast(1).should == '1'
+      end
+
+      it "calls #to_s on arbitrary objects" do
+        obj = Object.new
+        obj.extend Module.new { def to_s ; 'hello' ; end }
+        type_cast(obj).should == 'hello'
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/spec/attributes/time_spec.rb b/spec/attributes/time_spec.rb
new file mode 100644
index 0000000000..fcbe4f58e5
--- /dev/null
+++ b/spec/attributes/time_spec.rb
@@ -0,0 +1,22 @@
+require 'spec_helper'
+require 'bigdecimal'
+
+module Arel
+  describe "Attributes::Time" do
+
+    before :all do
+      @relation = Model.build do |r|
+        r.engine Testing::Engine.new
+        r.attribute :created_at, Attributes::Time
+      end
+    end
+
+    def type_cast(val)
+      @relation[:created_at].type_cast(val)
+    end
+
+    describe "#type_cast" do
+      it "works"
+    end
+  end
+end
\ No newline at end of file