Merge pull request #12 from launchdarkly/eb/ch64206/time-type

add ldtime package for time helpers

Makefile

@@ -14,8 +14,7 @@ clean:
 	go clean
 
 test:
-	@# Note, we need to specify all these packages individually for go test in order to remain 1.8-compatible
-	go test -race -v ./ldvalue ./ldreason ./lduser
+	go test -race -v ./...
 
 $(LINTER_VERSION_FILE):
 	rm -f $(LINTER)

ldtime/package_info.go

@@ -0,0 +1,2 @@
+// Package ldtime contains time-related types and functions used by LaunchDarkly packages.
+package ldtime

ldtime/unix_millis.go

@@ -0,0 +1,17 @@
+package ldtime
+
+import "time"
+
+// UnixMillisecondTime is a millisecond timestamp starting from the Unix epoch.
+type UnixMillisecondTime uint64
+
+// UnixMillisFromTime converts a Time value into UnixMillisecondTime.
+func UnixMillisFromTime(t time.Time) UnixMillisecondTime {
+	ms := time.Duration(t.UnixNano()) / time.Millisecond
+	return UnixMillisecondTime(ms)
+}
+
+// UnixMillisNow returns the current date/time as a UnixMillisecondTime.
+func UnixMillisNow() UnixMillisecondTime {
+	return UnixMillisFromTime(time.Now())
+}

ldtime/unix_millis_test.go

@@ -0,0 +1,14 @@
+package ldtime
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestUnixMillisFromTime(t *testing.T) {
+	tt := time.Date(1970, time.January, 1, 0, 1, 2, 0, time.UTC)
+	ut := UnixMillisFromTime(tt)
+	assert.Equal(t, uint64(62000), uint64(ut))
+}

package_info.go

@@ -1,7 +1,4 @@
 // Package ldcommon is the base package for commonly used Go SDK types and functions.
 //
 // Currently there are no types in this package; they are all in subpackages such as ldvalue.
-// In a future version, this package will contain the types that are most commonly needed
-// when using the SDK, such as User. The subpackages contain types that applications are
-// less likely to need (and that do not reference anything in the main package), such as Value.
 package ldcommon