formats/config: Added encoder/decoder for git config files. (#97)

* WIP: Add config format parser.

* add decoder based on gcfg.

Portions of code taken from:
https://github.com/go-gcfg/gcfg/blob/5b9f94ee80b2331c3982477bd84be8edd857df33/read.go

* add git config encoder and config methods.

* use format/config in storage/filesystem for read

* use format/config in storage/filesystem to write

* formats/config: improve docs.

* formats/config: improve tests.

* formats/config: use our fork of gcfg; improve api.

* formats/config: improve api.

* storage/filesystem: fix gofmt

* formats/config: use NoSubsection constant.

* formats/config: add doc.go

* formats/config: requested sytle changes.

* formats/config: do not use *_test packages.

1 files changed, 86 insertions, 0 deletions

diff --git a/formats/config/common_test.go b/formats/config/common_test.go
new file mode 100644
index 0000000..0bc4d2d
--- /dev/null
+++ b/formats/config/common_test.go
@@ -0,0 +1,86 @@
+package config
+
+import (
+	"testing"
+
+	. "gopkg.in/check.v1"
+)
+
+func Test(t *testing.T) { TestingT(t) }
+
+type CommonSuite struct{}
+
+var _ = Suite(&CommonSuite{})
+
+func (s *CommonSuite) TestConfig_SetOption(c *C) {
+	obtained := New().SetOption("section", "", "key1", "value1")
+	expected := &Config{
+		Sections: []*Section{
+			{
+				Name: "section",
+				Options: []*Option{
+					{Key: "key1", Value: "value1"},
+				},
+			},
+		},
+	}
+	c.Assert(obtained, DeepEquals, expected)
+	obtained = obtained.SetOption("section", "", "key1", "value1")
+	c.Assert(obtained, DeepEquals, expected)
+
+	obtained = New().SetOption("section", "subsection", "key1", "value1")
+	expected = &Config{
+		Sections: []*Section{
+			{
+				Name: "section",
+				Subsections: []*Subsection{
+					{
+						Name: "subsection",
+						Options: []*Option{
+							{Key: "key1", Value: "value1"},
+						},
+					},
+				},
+			},
+		},
+	}
+	c.Assert(obtained, DeepEquals, expected)
+	obtained = obtained.SetOption("section", "subsection", "key1", "value1")
+	c.Assert(obtained, DeepEquals, expected)
+}
+
+func (s *CommonSuite) TestConfig_AddOption(c *C) {
+	obtained := New().AddOption("section", "", "key1", "value1")
+	expected := &Config{
+		Sections: []*Section{
+			{
+				Name: "section",
+				Options: []*Option{
+					{Key: "key1", Value: "value1"},
+				},
+			},
+		},
+	}
+	c.Assert(obtained, DeepEquals, expected)
+}
+
+func (s *CommonSuite) TestConfig_RemoveSection(c *C) {
+	sect := New().
+		AddOption("section1", "", "key1", "value1").
+		AddOption("section2", "", "key1", "value1")
+	expected := New().
+		AddOption("section1", "", "key1", "value1")
+	c.Assert(sect.RemoveSection("other"), DeepEquals, sect)
+	c.Assert(sect.RemoveSection("section2"), DeepEquals, expected)
+}
+
+func (s *CommonSuite) TestConfig_RemoveSubsection(c *C) {
+	sect := New().
+		AddOption("section1", "sub1", "key1", "value1").
+		AddOption("section1", "sub2", "key1", "value1")
+	expected := New().
+		AddOption("section1", "sub1", "key1", "value1")
+	c.Assert(sect.RemoveSubsection("section1", "other"), DeepEquals, sect)
+	c.Assert(sect.RemoveSubsection("other", "other"), DeepEquals, sect)
+	c.Assert(sect.RemoveSubsection("section1", "sub2"), DeepEquals, expected)
+}