Add a settings package

This lets us modify the libgit2-wide options/settings.

1 files changed, 66 insertions, 0 deletions

diff --git a/settings/settings_test.go b/settings/settings_test.go
new file mode 100644
index 0000000..55b08c8
--- /dev/null
+++ b/settings/settings_test.go
@@ -0,0 +1,66 @@
+package settings
+
+import (
+	"testing"
+	"runtime"
+	"github.com/libgit2/git2go"
+)
+
+type pathPair struct {
+	Level git.ConfigLevel
+	Path  string
+}
+
+func TestSearchPath(t *testing.T) {
+	paths := []pathPair{
+		pathPair{git.ConfigLevelSystem, "/tmp/system"},
+		pathPair{git.ConfigLevelGlobal, "/tmp/global"},
+		pathPair{git.ConfigLevelXDG, "/tmp/xdg"},
+	}
+
+	for _, pair := range paths {
+		err := SetSearchPath(pair.Level, pair.Path)
+		checkFatal(t, err)
+
+		actual, err := SearchPath(pair.Level)
+		checkFatal(t, err)
+
+		if pair.Path != actual {
+			t.Fatal("Search paths don't match")
+		}
+	}
+}
+
+func TestMmapSizes(t *testing.T) {
+	size := 42 * 1024
+
+	err := SetMwindowSize(size)
+	checkFatal(t, err)
+
+	actual, err := MwindowSize()
+	if size != actual {
+		t.Fatal("Sizes don't match")
+	}
+
+	err = SetMwindowMappedLimit(size)
+	checkFatal(t, err)
+
+	actual, err = MwindowMappedLimit()
+	if size != actual {
+		t.Fatal("Sizes don't match")
+	}
+}
+
+func checkFatal(t *testing.T, err error) {
+	if err == nil {
+		return
+	}
+
+	// The failure happens at wherever we were called, not here
+	_, file, line, ok := runtime.Caller(1)
+	if !ok {
+		t.Fatal()
+	}
+
+	t.Fatalf("Fail at %v:%v; %v", file, line, err)
+}