From 6f2603fafd5b07040e0202cbb6808511f86c07c6 Mon Sep 17 00:00:00 2001
From: Tilman Sauerbeck <tilman@code-monkey.de>
Date: Wed, 8 Jan 2020 18:36:47 +0100
Subject: [PATCH] test: Add tests for the gps module.

---
 SConscript.test  |  1 +
 test/gps_test.rs | 87 ++++++++++++++++++++++++++++++++++++++++++++++++
 test/main.rs     |  7 ++++
 3 files changed, 95 insertions(+)
 create mode 100644 test/gps_test.rs

diff --git a/SConscript.test b/SConscript.test
index 28ddfd7..57593ad 100644
--- a/SConscript.test
+++ b/SConscript.test
@@ -10,6 +10,7 @@ SConscript('SConscript.libcommon.rs', exports='env', duplicate=0)
 
 test_source_files = [
     'test/main.rs', # Must be listed first (see below).
+    'test/gps_test.rs',
 ]
 
 test_env = env.Clone()
diff --git a/test/gps_test.rs b/test/gps_test.rs
new file mode 100644
index 0000000..bed56a7
--- /dev/null
+++ b/test/gps_test.rs
@@ -0,0 +1,87 @@
+/*
+ * Copyright (c) 2020 Tilman Sauerbeck (tilman at code-monkey de)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+use common::gps;
+
+// Verifies that a single RMC message with position, date and time
+// does not suffice for getting a valid TimeAndPos result.
+#[test]
+fn process_rmc_only() {
+    let input = b"\
+$GPRMC,110338.000,,1234.5678,N,12345.6789,E,\
+,,011116*45";
+
+    let mut input_iter = input.iter();
+
+    let mut tap = gps::TimeAndPos::new();
+    let mut gps = gps::Gps::new();
+
+    let has_fix = gps.update(&mut tap, || {
+        input_iter.next().and_then(|&b| Some(b))
+    });
+
+    assert_eq!(false, has_fix);
+}
+
+// Verifies that a single GGA message with position and time
+// does not suffice for getting a valid TimeAndPos result.
+#[test]
+fn process_gga_only() {
+    let input = b"\
+$GPGGA,110338.000,1234.5678,N,12345.6789,E,\
+1,04,2.4,190.3,M,48.0,M,,0000*58";
+    let mut input_iter = input.iter();
+
+    let mut tap = gps::TimeAndPos::new();
+    let mut gps = gps::Gps::new();
+
+    let has_fix = gps.update(&mut tap, || {
+        input_iter.next().and_then(|&b| Some(b))
+    });
+
+    assert_eq!(false, has_fix);
+}
+
+// Verifies that a GGA message received after a RMC message
+// does suffice for getting a valid TimeAndPos result.
+#[test]
+fn process_rmc_and_gga() {
+    let input = b"\
+$GPRMC,110338.000,,1234.5678,N,12345.6789,E,\
+,,011116*45\
+$GPGGA,110338.000,1234.5678,N,12345.6789,E,\
+1,04,2.4,190.3,M,48.0,M,,0000*58";
+    let mut input_iter = input.iter();
+
+    let mut tap = gps::TimeAndPos::new();
+    let mut gps = gps::Gps::new();
+
+    let has_fix = gps.update(&mut tap, || {
+        input_iter.next().and_then(|&b| Some(b))
+    });
+
+    assert_eq!(true, has_fix);
+    assert_eq!(1477998218, tap.unix_time);
+    assert_eq!(tap.latitude, 7545678);
+    assert_eq!(tap.longitude, 74256789);
+}
diff --git a/test/main.rs b/test/main.rs
index 0e0c124..011e185 100644
--- a/test/main.rs
+++ b/test/main.rs
@@ -22,3 +22,10 @@
  */
 
 extern crate common;
+
+mod gps_test;
+
+#[no_mangle]
+extern fn get_ticks() -> u32 {
+    0
+}
-- 
2.30.2