From c3f9d593de34ee286ec556bd631d1ab88208281b Mon Sep 17 00:00:00 2001
From: Ayke van Laethem <aykevanlaethem@gmail.com>
Date: Mon, 31 Jul 2023 15:29:45 +0200
Subject: [PATCH] sd: test creation of raw BLE advertisement packets

I realized we didn't have any tests for this yet, which we really should
have. So here they are.
---
 gap_test.go | 70 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 70 insertions(+)
 create mode 100644 gap_test.go

diff --git a/gap_test.go b/gap_test.go
new file mode 100644
index 0000000..c504325
--- /dev/null
+++ b/gap_test.go
@@ -0,0 +1,70 @@
+package bluetooth
+
+import (
+	"testing"
+	"time"
+)
+
+func TestCreateAdvertisementPayload(t *testing.T) {
+	type testCase struct {
+		raw    string
+		parsed AdvertisementOptions
+	}
+	tests := []testCase{
+		{
+			raw:    "\x02\x01\x06", // flags
+			parsed: AdvertisementOptions{},
+		},
+		{
+			raw: "\x02\x01\x06", // flags
+			parsed: AdvertisementOptions{
+				// Interval doesn't affect the advertisement payload.
+				Interval: NewDuration(100 * time.Millisecond),
+			},
+		},
+		{
+			raw: "\x02\x01\x06" + // flags
+				"\x07\x09foobar", // local name
+			parsed: AdvertisementOptions{
+				LocalName: "foobar",
+			},
+		},
+		{
+			raw: "\x02\x01\x06" + // flags
+				"\x0b\x09Heart rate" + // local name
+				"\x03\x03\x0d\x18", // service UUID
+			parsed: AdvertisementOptions{
+				LocalName: "Heart rate",
+				ServiceUUIDs: []UUID{
+					ServiceUUIDHeartRate,
+				},
+			},
+		},
+		{
+			// Note: the two service UUIDs should really be merged into one to
+			// save space.
+			raw: "\x02\x01\x06" + // flags
+				"\x0b\x09Heart rate" + // local name
+				"\x03\x03\x0d\x18" + // heart rate service UUID
+				"\x03\x03\x0f\x18", // battery service UUID
+			parsed: AdvertisementOptions{
+				LocalName: "Heart rate",
+				ServiceUUIDs: []UUID{
+					ServiceUUIDHeartRate,
+					ServiceUUIDBattery,
+				},
+			},
+		},
+	}
+	for _, tc := range tests {
+		var expectedRaw rawAdvertisementPayload
+		expectedRaw.len = uint8(len(tc.raw))
+		copy(expectedRaw.data[:], tc.raw)
+
+		var raw rawAdvertisementPayload
+		raw.addFromOptions(tc.parsed)
+		if raw != expectedRaw {
+			t.Errorf("error when serializing options: %#v\nexpected: %#v\nactual:   %#v\n", tc.parsed, tc.raw, string(raw.data[:raw.len]))
+		}
+	}
+}