[geary/mjog/imap-connection-fixes: 14/21] Add TestCase.assert_double

[Michael Gratton <mjog src gnome org>]

commit a4c1fcab3072352f4e6c15543ed536265a75e54d
Author: Michael Gratton <mike vee net>
Date:   Sun Dec 29 17:00:07 2019 +1030

    Add TestCase.assert_double

 test/engine/util-timeout-manager-test.vala | 10 +++-------
 test/test-case.vala                        |  4 ++++
 2 files changed, 7 insertions(+), 7 deletions(-)
---
diff --git a/test/engine/util-timeout-manager-test.vala b/test/engine/util-timeout-manager-test.vala
index a9a01a64..dcecba8d 100644
--- a/test/engine/util-timeout-manager-test.vala
+++ b/test/engine/util-timeout-manager-test.vala
@@ -87,7 +87,7 @@ class Geary.TimeoutManagerTest : TestCase {
             this.main_loop.iteration(true);
         }
 
-        assert_epsilon(timer.elapsed(), 1.0, SECONDS_EPSILON);
+        assert_double(timer.elapsed(), 1.0, SECONDS_EPSILON);
     }
 
     public void milliseconds() throws Error {
@@ -101,7 +101,7 @@ class Geary.TimeoutManagerTest : TestCase {
             this.main_loop.iteration(true);
         }
 
-        assert_epsilon(timer.elapsed(), 0.1, MILLISECONDS_EPSILON);
+        assert_double(timer.elapsed(), 0.1, MILLISECONDS_EPSILON);
     }
 
     public void repeat_forever() throws Error {
@@ -118,11 +118,7 @@ class Geary.TimeoutManagerTest : TestCase {
         }
         timer.stop();
 
-        assert_epsilon(timer.elapsed(), 2.0, SECONDS_EPSILON * 2);
-    }
-
-    private inline void assert_epsilon(double actual, double expected, double epsilon) {
-        assert(actual + epsilon >= expected && actual - epsilon <= expected);
+        assert_double(timer.elapsed(), 2.0, SECONDS_EPSILON * 2);
     }
 
 }
diff --git a/test/test-case.vala b/test/test-case.vala
index 7e65603d..6292c498 100644
--- a/test/test-case.vala
+++ b/test/test-case.vala
@@ -96,6 +96,10 @@ public void assert_int64(int64 expected, int64 actual, string? context = null)
     }
 }
 
+public void assert_double(double actual, double expected, double epsilon) {
+    assert(actual + epsilon >= expected && actual - epsilon <= expected);
+}
+
 public void assert_uint(uint expected, uint actual, string? context = null)
     throws GLib.Error {
     if (expected != actual) {