1 files changed, 60 insertions, 0 deletions

diff --git a/rust/space-age/tests/space-age.rs b/rust/space-age/tests/space-age.rs
new file mode 100644
index 0000000..acc45d4
--- /dev/null
+++ b/rust/space-age/tests/space-age.rs
@@ -0,0 +1,60 @@
+use space_age::*;
+
+fn assert_in_delta(expected: f64, actual: f64) {
+    let diff: f64 = (expected - actual).abs();
+    let delta: f64 = 0.01;
+    if diff > delta {
+        panic!(
+            "Your result of {} should be within {} of the expected result {}",
+            actual, delta, expected
+        )
+    }
+}
+
+#[test]
+fn earth_age() {
+    let duration = Duration::from(1_000_000_000);
+    assert_in_delta(31.69, Earth::years_during(&duration));
+}
+
+#[test]
+fn mercury_age() {
+    let duration = Duration::from(2_134_835_688);
+    assert_in_delta(280.88, Mercury::years_during(&duration));
+}
+
+#[test]
+fn venus_age() {
+    let duration = Duration::from(189_839_836);
+    assert_in_delta(9.78, Venus::years_during(&duration));
+}
+
+#[test]
+fn mars_age() {
+    let duration = Duration::from(2_129_871_239);
+    assert_in_delta(35.88, Mars::years_during(&duration));
+}
+
+#[test]
+fn jupiter_age() {
+    let duration = Duration::from(901_876_382);
+    assert_in_delta(2.41, Jupiter::years_during(&duration));
+}
+
+#[test]
+fn saturn_age() {
+    let duration = Duration::from(2_000_000_000);
+    assert_in_delta(2.15, Saturn::years_during(&duration));
+}
+
+#[test]
+fn uranus_age() {
+    let duration = Duration::from(1_210_123_456);
+    assert_in_delta(0.46, Uranus::years_during(&duration));
+}
+
+#[test]
+fn neptune_age() {
+    let duration = Duration::from(1_821_023_456);
+    assert_in_delta(0.35, Neptune::years_during(&duration));
+}