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|
package ordered
import (
"cmp"
"fmt"
"testing"
)
func assertEqual[T cmp.Ordered](tb testing.TB, result, expect T) {
tb.Helper()
if result != expect {
tb.Errorf("expected %v, got %v", expect, result)
}
}
func TestMin(t *testing.T) {
name := func(x, y, expect any) string {
return fmt.Sprintf("min(%v, %v) = %v", x, y, expect)
}
for expect, args := range map[int][2]int{
1: {1, 2},
0: {1, 0},
-10: {1, -10},
} {
t.Run(name(args[0], args[1], expect), func(t *testing.T) {
assertEqual(t, Min(args[0], args[1]), expect)
})
}
for expect, args := range map[float64][2]float64{
0.1: {0.1, 2},
0.0: {1, 0},
-1.0: {1, -1.0},
} {
t.Run(name(args[0], args[1], expect), func(t *testing.T) {
assertEqual(t, Min(args[0], args[1]), expect)
})
}
for expect, args := range map[string][2]string{
"": {"", "a"},
"a": {"aa", "a"},
"aa": {"aa", "aaaa"},
} {
t.Run(name(args[0], args[1], expect), func(t *testing.T) {
assertEqual(t, Min(args[0], args[1]), expect)
})
}
}
func TestMax(t *testing.T) {
name := func(x, y, expect any) string {
return fmt.Sprintf("max(%v, %v) = %v", x, y, expect)
}
for expect, args := range map[int][2]int{
2: {1, 2},
1: {1, 0},
0: {0, -10},
} {
t.Run(name(args[0], args[1], expect), func(t *testing.T) {
assertEqual(t, Max(args[0], args[1]), expect)
})
}
for expect, args := range map[float64][2]float64{
0.1: {0.1, 0.02},
1.0: {1, 0},
-1.0: {-1.1, -1.0},
} {
t.Run(name(args[0], args[1], expect), func(t *testing.T) {
assertEqual(t, Max(args[0], args[1]), expect)
})
}
for expect, args := range map[string][2]string{
"a": {"", "a"},
"aa": {"aa", "a"},
"aaaa": {"aa", "aaaa"},
} {
t.Run(name(args[0], args[1], expect), func(t *testing.T) {
assertEqual(t, Max(args[0], args[1]), expect)
})
}
}
func TestClamp(t *testing.T) {
name := func(n, low, high, expect any) string {
return fmt.Sprintf("clamp(%v, %v, %v) = %v", n, low, high, expect)
}
for expect, input := range map[int]struct {
n, low, high int
}{
10: {10, 1, 10},
4: {2, 4, 30},
32: {45, 20, 32},
15: {15, 33, 11},
} {
t.Run(name(input.n, input.low, input.high, expect), func(t *testing.T) {
assertEqual(t, Clamp(input.n, input.low, input.high), expect)
})
}
for expect, input := range map[float64]struct {
n, low, high float64
}{
1.0: {1.0, 1.0, 10.3},
0.4: {0.2, 0.4, 30},
3.2: {4.5, 2.0, 3.2},
} {
t.Run(name(input.n, input.low, input.high, expect), func(t *testing.T) {
assertEqual(t, Clamp(input.n, input.low, input.high), expect)
})
}
for expect, input := range map[string]struct {
n, low, high string
}{
"a": {"a", "a", "aaaa"},
"aaa": {"aaa", "aa", "aaaa"},
"aaaa": {"aaaaaa", "aa", "aaaa"},
} {
t.Run(name(input.n, input.low, input.high, expect), func(t *testing.T) {
assertEqual(t, Clamp(input.n, input.low, input.high), expect)
})
}
}
func TestFirst(t *testing.T) {
name := func(args []any, expect any) string {
return fmt.Sprintf("first(%v) = %v", args, expect)
}
for expect, args := range map[string]struct {
x string
y []string
}{
"a": {"", []string{"", "a", "b", ""}},
"c": {"c", []string{"", "a", "b", ""}},
"": {"", nil},
} {
fnargs := []any{args.x}
for _, y := range args.y {
fnargs = append(fnargs, y)
}
t.Run(name(fnargs, expect), func(t *testing.T) {
assertEqual(t, First(args.x, args.y...), expect)
})
}
for expect, args := range map[int]struct {
x int
y []int
}{
1: {0, []int{0, 1, 2}},
0: {0, []int{0, 0, 0, 0}},
100: {100, []int{0}},
} {
fnargs := []any{args.x}
for _, y := range args.y {
fnargs = append(fnargs, y)
}
t.Run(name(fnargs, expect), func(t *testing.T) {
assertEqual(t, First(args.x, args.y...), expect)
})
}
}
|
