Added some tests.

tests/Tests.elm

@@ -2,13 +2,31 @@ module Tests exposing (..)
 
 import Test exposing (..)
 import Expect
-import AnimationHelpers exposing (calculateAnimation)
+import AnimationHelpers exposing (calculateAnimation, movePosition, distanceFromSpeed, fmod)
+
+
+trimFloatX : Int -> Float -> Float
+trimFloatX precision num =
+    ((num * toFloat (10 ^ precision)) |> round |> toFloat) / toFloat (10 ^ precision)
+
+
+trimTupleX : Int -> ( Float, Float ) -> ( Float, Float )
+trimTupleX precision ( first, second ) =
+    ( trimFloatX precision first, trimFloatX precision second )
+
+
+trimFloat1 =
+    trimFloatX 1
+
+
+trimTuple1 =
+    trimTupleX 1
 
 
 all : Test
 all =
     describe "Elmman Test Suite"
-        [ describe "Player logic tests"
+        [ describe "Animations frame mapping function"
             [ test "Animation frame calculations" <|
                 \() ->
                     Expect.equal (calculateAnimation 100 500 ( 0, 200 )) 40
@@ -18,14 +36,75 @@ all =
             , test "Animation frame calculations 3" <|
                 \() ->
                     Expect.equal (calculateAnimation 501 500 ( 0, 200 )) 0
-            , test "Animation frame calculations 4" <|
+            , test "Animation frame calculations with increased range" <|
                 \() ->
                     Expect.equal (calculateAnimation 500 500 ( 100, 300 )) 300
-            , test "Animation frame calculations 5" <|
+            , test "Animation frame calculations with increased range 2" <|
                 \() ->
                     Expect.equal (calculateAnimation 100 500 ( 100, 300 )) 140
-            , test "Animation frame calculations 6" <|
+            , test "Animation frame calculations with negative range" <|
                 \() ->
                     Expect.equal (calculateAnimation 100 500 ( -100, 100 )) -60
             ]
+        , describe "Position movement function"
+            [ test "Move 45 degrees 10 units" <|
+                \() ->
+                    Expect.equal
+                        (trimTuple1 (movePosition ( 0, 0 ) 45 10))
+                        ( 7.1, 7.1 )
+            , test "Move 45 degrees 200 units from 10,10" <|
+                \() ->
+                    Expect.equal
+                        (trimTuple1 (movePosition ( 10, 10 ) 45 200))
+                        ( 151.4, 151.4 )
+            , test "Move 158 degrees 200 units" <|
+                \() ->
+                    Expect.equal
+                        (trimTuple1 (movePosition ( 0, 0 ) 158 200))
+                        ( -185.4, 74.9 )
+            , test "Move 360 degrees 200 units" <|
+                \() ->
+                    Expect.equal
+                        (trimTuple1 (movePosition ( 0, 0 ) 360 200))
+                        ( 200, 0 )
+            , test "Move 312 degrees 150 units" <|
+                \() ->
+                    Expect.equal
+                        (trimTuple1 (movePosition ( 0, 0 ) 312 150))
+                        ( 100.4, -111.5 )
+            ]
+        , describe "convert speed/time to distance function"
+            [ test "speed 200u/s for 4ms" <|
+                \() ->
+                    Expect.equal
+                        (trimFloat1 (distanceFromSpeed 200 4))
+                        0.8
+            , test "speed 2000u/s for 1ms" <|
+                \() ->
+                    Expect.equal
+                        (distanceFromSpeed 2000 1)
+                        2
+            , test "speed 1 u/s for 1ms" <|
+                \() ->
+                    Expect.equal
+                        (distanceFromSpeed 1 1)
+                        0.001
+            , test "speed 1 u/s for 1000ms" <|
+                \() ->
+                    Expect.equal
+                        (distanceFromSpeed 1 1000)
+                        1
+            ]
+        , describe "modulus for float"
+            [ test "10.15 % 9" <|
+                \() ->
+                    Expect.equal
+                        (trimFloatX 2 (fmod 10.15 9))
+                        1.15
+            , test "51934 % 123" <|
+                \() ->
+                    Expect.equal
+                        (fmod 51934 123)
+                        28
+            ]
         ]

tests/elm-package.json

@@ -13,6 +13,7 @@
         "elm-community/json-extra": "2.3.0 <= v < 3.0.0",
         "elm-lang/core": "5.0.0 <= v < 6.0.0",
         "elm-lang/html": "2.0.0 <= v < 3.0.0",
+        "folkertdev/svg-path-dsl": "2.0.0 <= v < 3.0.0",
         "mgold/elm-random-pcg": "5.0.0 <= v < 6.0.0",
         "rtfeldman/node-test-runner": "3.0.0 <= v < 4.0.0"
     },