space-age

rust/space-age/tests/space_age.rs

@@ -0,0 +1,81 @@
+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 {actual} should be within {delta} of the expected result {expected}")
+    }
+}
+
+#[test]
+fn age_on_earth() {
+    let seconds = 1_000_000_000;
+    let duration = Duration::from(seconds);
+    let output = Earth::years_during(&duration);
+    let expected = 31.69;
+    assert_in_delta(expected, output);
+}
+
+#[test]
+fn age_on_mercury() {
+    let seconds = 2_134_835_688;
+    let duration = Duration::from(seconds);
+    let output = Mercury::years_during(&duration);
+    let expected = 280.88;
+    assert_in_delta(expected, output);
+}
+
+#[test]
+fn age_on_venus() {
+    let seconds = 189_839_836;
+    let duration = Duration::from(seconds);
+    let output = Venus::years_during(&duration);
+    let expected = 9.78;
+    assert_in_delta(expected, output);
+}
+
+#[test]
+fn age_on_mars() {
+    let seconds = 2_129_871_239;
+    let duration = Duration::from(seconds);
+    let output = Mars::years_during(&duration);
+    let expected = 35.88;
+    assert_in_delta(expected, output);
+}
+
+#[test]
+fn age_on_jupiter() {
+    let seconds = 901_876_382;
+    let duration = Duration::from(seconds);
+    let output = Jupiter::years_during(&duration);
+    let expected = 2.41;
+    assert_in_delta(expected, output);
+}
+
+#[test]
+fn age_on_saturn() {
+    let seconds = 2_000_000_000;
+    let duration = Duration::from(seconds);
+    let output = Saturn::years_during(&duration);
+    let expected = 2.15;
+    assert_in_delta(expected, output);
+}
+
+#[test]
+fn age_on_uranus() {
+    let seconds = 1_210_123_456;
+    let duration = Duration::from(seconds);
+    let output = Uranus::years_during(&duration);
+    let expected = 0.46;
+    assert_in_delta(expected, output);
+}
+
+#[test]
+fn age_on_neptune() {
+    let seconds = 1_821_023_456;
+    let duration = Duration::from(seconds);
+    let output = Neptune::years_during(&duration);
+    let expected = 0.35;
+    assert_in_delta(expected, output);
+}