Describe test rides as plain strings with a ridetest DSL

Add internal/ridetest parsing "2km at 7% | 1km at -7%" sections into a
ride.Ride, with Sampling, StartCoord, StartTime and StartElevation options,
plus per-section hr/cad/w metrics. Replace the package-private RideBuilder in
climb/difficulty tests and export FromColumnsWithMetrics so metric columns
can be built outside the ride package.

1 files changed, 9 insertions, 8 deletions

diff --git a/ride/difficulty_test.go b/ride/difficulty_test.go
index 2e7cf56..bd316b4 100644
--- a/ride/difficulty_test.go
+++ b/ride/difficulty_test.go
@@ -4,35 +4,36 @@ import (
 	"math"
 	"testing"
 
+	"github.com/martinlehoux/biking_home/internal/ridetest"
 	"github.com/martinlehoux/biking_home/ride"
 	"github.com/stretchr/testify/assert"
 )
 
 func TestCotacolConstantClimb(t *testing.T) {
-	r := RideBuilder{precision: 100}.WithSection("2km at 7%").Build()
+	r := ridetest.MustRide("2km at 7%")
 	assert.InDelta(t, 98.0, ride.Cotacol(r), 1e-9)
 }
 
 func TestCotacolIgnoresDescent(t *testing.T) {
-	r := RideBuilder{precision: 100}.WithSection("2km at 7%").WithSection("2km at -7%").Build()
+	r := ridetest.MustRide("2km at 7% | 2km at -7%")
 	assert.InDelta(t, 98.0, ride.Cotacol(r), 1e-9)
 }
 
 func TestCotacolFlatIsZero(t *testing.T) {
-	r := RideBuilder{precision: 100}.WithSection("5km at 0%").Build()
+	r := ridetest.MustRide("5km at 0%")
 	assert.Zero(t, ride.Cotacol(r))
 }
 
 func TestCotacolSteepShortCountsMore(t *testing.T) {
-	steep := RideBuilder{precision: 100}.WithSection("0.5km at 14%").Build()
-	long := RideBuilder{precision: 100}.WithSection("1km at 7%").Build()
+	steep := ridetest.MustRide("0.5km at 14%")
+	long := ridetest.MustRide("1km at 7%")
 	assert.InDelta(t, 98.0, ride.Cotacol(steep), 1e-9)
 	assert.InDelta(t, 49.0, ride.Cotacol(long), 1e-9)
 }
 
 func TestCotacolPrecisionInvariant(t *testing.T) {
-	coarse := RideBuilder{precision: 100}.WithSection("3km at 5%").Build()
-	fine := RideBuilder{precision: 50}.WithSection("3km at 5%").Build()
+	coarse := ridetest.MustRide("3km at 5%")
+	fine := ridetest.MustRide("3km at 5%", ridetest.Sampling(50))
 	assert.InDelta(t, ride.Cotacol(coarse), ride.Cotacol(fine), 1e-9)
 }
 
@@ -43,7 +44,7 @@ func TestCotacolExampleRide(t *testing.T) {
 }
 
 func TestCotacolClimbNotAtStart(t *testing.T) {
-	r := RideBuilder{precision: 100}.WithSection("1km at 0%").WithSection("2km at 7%").Build()
+	r := ridetest.MustRide("1km at 0% | 2km at 7%")
 	climbs := r.DetectClimbs(nil, ride.ClimbSlopeMinimum)
 	assert.Len(t, climbs, 1)
 	assert.InDelta(t, 98.0, climbs[0].DifficultyScore(), 1e-9)