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authorDimitri Sokolyuk <demon@dim13.org>2018-09-22 15:08:06 +0200
committerDimitri Sokolyuk <demon@dim13.org>2018-09-22 15:08:06 +0200
commit53eefb5643c87888ddda629fd4f848ad7681662e (patch)
treeb13e988068ea525d9c24e8fdda5d9935bc92bd74
parent44b00088f7d87053fd2bb3b4ecfcaea79fd0c41d (diff)
load space-age
-rw-r--r--go/space-age/.solution.json1
-rw-r--r--go/space-age/README.md54
-rw-r--r--go/space-age/cases_test.go61
-rw-r--r--go/space-age/space_age_test.go25
4 files changed, 141 insertions, 0 deletions
diff --git a/go/space-age/.solution.json b/go/space-age/.solution.json
new file mode 100644
index 0000000..b2e867e
--- /dev/null
+++ b/go/space-age/.solution.json
@@ -0,0 +1 @@
+{"track":"go","exercise":"space-age","id":"09ca736f01334c08a5e949243ad2d844","url":"https://exercism.io/my/solutions/09ca736f01334c08a5e949243ad2d844","handle":"dim13","is_requester":true,"auto_approve":false} \ No newline at end of file
diff --git a/go/space-age/README.md b/go/space-age/README.md
new file mode 100644
index 0000000..03eb834
--- /dev/null
+++ b/go/space-age/README.md
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+# Space Age
+
+Given an age in seconds, calculate how old someone would be on:
+
+ - Earth: orbital period 365.25 Earth days, or 31557600 seconds
+ - Mercury: orbital period 0.2408467 Earth years
+ - Venus: orbital period 0.61519726 Earth years
+ - Mars: orbital period 1.8808158 Earth years
+ - Jupiter: orbital period 11.862615 Earth years
+ - Saturn: orbital period 29.447498 Earth years
+ - Uranus: orbital period 84.016846 Earth years
+ - Neptune: orbital period 164.79132 Earth years
+
+So if you were told someone were 1,000,000,000 seconds old, you should
+be able to say that they're 31.69 Earth-years old.
+
+If you're wondering why Pluto didn't make the cut, go watch [this
+youtube video](http://www.youtube.com/watch?v=Z_2gbGXzFbs).
+
+## No Stub
+
+This may be the first Go track exercise you encounter without a stub: a
+pre-existing `space_age.go` file for your solution. You may not see stubs in
+the future and should begin to get comfortable with creating your own Go files
+for your solutions.
+
+One way to figure out what the function signature(s) you would need is to look
+at the corresponding \*\_test.go file. It will show you what the package level
+functions(s) should be that the test will use to verify the solution.
+
+
+## Running the tests
+
+To run the tests run the command `go test` from within the exercise directory.
+
+If the test suite contains benchmarks, you can run these with the `--bench` and `--benchmem`
+flags:
+
+ go test -v --bench . --benchmem
+
+Keep in mind that each reviewer will run benchmarks on a different machine, with
+different specs, so the results from these benchmark tests may vary.
+
+## Further information
+
+For more detailed information about the Go track, including how to get help if
+you're having trouble, please visit the exercism.io [Go language page](http://exercism.io/languages/go/about).
+
+## Source
+
+Partially inspired by Chapter 1 in Chris Pine's online Learn to Program tutorial. [http://pine.fm/LearnToProgram/?Chapter=01](http://pine.fm/LearnToProgram/?Chapter=01)
+
+## Submitting Incomplete Solutions
+It's possible to submit an incomplete solution so you can see how others have completed the exercise.
diff --git a/go/space-age/cases_test.go b/go/space-age/cases_test.go
new file mode 100644
index 0000000..bf8bed8
--- /dev/null
+++ b/go/space-age/cases_test.go
@@ -0,0 +1,61 @@
+package space
+
+// Source: exercism/problem-specifications
+// Commit: 8d4df79 space-age: Apply new "input" policy
+// Problem Specifications Version: 1.1.0
+
+var testCases = []struct {
+ description string
+ planet Planet
+ seconds float64
+ expected float64
+}{
+ {
+ description: "age on Earth",
+ planet: "Earth",
+ seconds: 1000000000,
+ expected: 31.69,
+ },
+ {
+ description: "age on Mercury",
+ planet: "Mercury",
+ seconds: 2134835688,
+ expected: 280.88,
+ },
+ {
+ description: "age on Venus",
+ planet: "Venus",
+ seconds: 189839836,
+ expected: 9.78,
+ },
+ {
+ description: "age on Mars",
+ planet: "Mars",
+ seconds: 2329871239,
+ expected: 39.25,
+ },
+ {
+ description: "age on Jupiter",
+ planet: "Jupiter",
+ seconds: 901876382,
+ expected: 2.41,
+ },
+ {
+ description: "age on Saturn",
+ planet: "Saturn",
+ seconds: 3000000000,
+ expected: 3.23,
+ },
+ {
+ description: "age on Uranus",
+ planet: "Uranus",
+ seconds: 3210123456,
+ expected: 1.21,
+ },
+ {
+ description: "age on Neptune",
+ planet: "Neptune",
+ seconds: 8210123456,
+ expected: 1.58,
+ },
+}
diff --git a/go/space-age/space_age_test.go b/go/space-age/space_age_test.go
new file mode 100644
index 0000000..71f7359
--- /dev/null
+++ b/go/space-age/space_age_test.go
@@ -0,0 +1,25 @@
+package space
+
+import (
+ "math"
+ "testing"
+)
+
+func TestAge(t *testing.T) {
+ const precision = 0.01
+ for _, tc := range testCases {
+ actual := Age(tc.seconds, tc.planet)
+ if math.IsNaN(actual) || math.Abs(actual-tc.expected) > precision {
+ t.Fatalf("FAIL: %s\nExpected: %#v\nActual: %#v", tc.description, tc.expected, actual)
+ }
+ t.Logf("PASS: %s", tc.description)
+ }
+}
+
+func BenchmarkAge(b *testing.B) {
+ for i := 0; i < b.N; i++ {
+ for _, tc := range testCases {
+ Age(tc.seconds, tc.planet)
+ }
+ }
+}