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Move string slice functions to slice package as generic functions

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This commit is contained in:
Deluan 2023-06-02 16:30:20 -04:00
parent c4c99b7f75
commit 3fc4313e89
5 changed files with 67 additions and 65 deletions
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90
utils/slice/slice_test.go
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@ -14,45 +14,59 @@ func TestSlice(t *testing.T) {
RunSpecs(t, "Slice Suite")
}
var _ = Describe("Map", func() {
It("returns empty slice for an empty input", func() {
mapFunc := func(v int) string { return strconv.Itoa(v * 2) }
result := slice.Map([]int{}, mapFunc)
Expect(result).To(BeEmpty())
var _ = Describe("Slice Utils", func() {
Describe("Map", func() {
It("returns empty slice for an empty input", func() {
mapFunc := func(v int) string { return strconv.Itoa(v * 2) }
result := slice.Map([]int{}, mapFunc)
Expect(result).To(BeEmpty())
})
It("returns a new slice with elements mapped", func() {
mapFunc := func(v int) string { return strconv.Itoa(v * 2) }
result := slice.Map([]int{1, 2, 3, 4}, mapFunc)
Expect(result).To(ConsistOf("2", "4", "6", "8"))
})
})
It("returns a new slice with elements mapped", func() {
mapFunc := func(v int) string { return strconv.Itoa(v * 2) }
result := slice.Map([]int{1, 2, 3, 4}, mapFunc)
Expect(result).To(ConsistOf("2", "4", "6", "8"))
})
})
var _ = Describe("Group", func() {
It("returns empty map for an empty input", func() {
keyFunc := func(v int) int { return v % 2 }
result := slice.Group([]int{}, keyFunc)
Expect(result).To(BeEmpty())
})
It("groups by the result of the key function", func() {
keyFunc := func(v int) int { return v % 2 }
result := slice.Group([]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, keyFunc)
Expect(result).To(HaveLen(2))
Expect(result[0]).To(ConsistOf(2, 4, 6, 8, 10))
Expect(result[1]).To(ConsistOf(1, 3, 5, 7, 9, 11))
})
})
var _ = Describe("MostFrequent", func() {
It("returns zero value if no arguments are passed", func() {
Expect(slice.MostFrequent([]int{})).To(BeZero())
})
It("returns the single item", func() {
Expect(slice.MostFrequent([]string{"123"})).To(Equal("123"))
})
It("returns the item that appeared more times", func() {
Expect(slice.MostFrequent([]string{"1", "2", "1", "2", "3", "2"})).To(Equal("2"))
Describe("Group", func() {
It("returns empty map for an empty input", func() {
keyFunc := func(v int) int { return v % 2 }
result := slice.Group([]int{}, keyFunc)
Expect(result).To(BeEmpty())
})
It("groups by the result of the key function", func() {
keyFunc := func(v int) int { return v % 2 }
result := slice.Group([]int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11}, keyFunc)
Expect(result).To(HaveLen(2))
Expect(result[0]).To(ConsistOf(2, 4, 6, 8, 10))
Expect(result[1]).To(ConsistOf(1, 3, 5, 7, 9, 11))
})
})
Describe("MostFrequent", func() {
It("returns zero value if no arguments are passed", func() {
Expect(slice.MostFrequent([]int{})).To(BeZero())
})
It("returns the single item", func() {
Expect(slice.MostFrequent([]string{"123"})).To(Equal("123"))
})
It("returns the item that appeared more times", func() {
Expect(slice.MostFrequent([]string{"1", "2", "1", "2", "3", "2"})).To(Equal("2"))
})
})
Describe("Move", func() {
It("moves item to end of slice", func() {
Expect(slice.Move([]string{"1", "2", "3"}, 0, 2)).To(ConsistOf("2", "3", "1"))
})
It("moves item to beginning of slice", func() {
Expect(slice.Move([]string{"1", "2", "3"}, 2, 0)).To(ConsistOf("3", "1", "2"))
})
It("keeps item in same position if srcIndex == dstIndex", func() {
Expect(slice.Move([]string{"1", "2", "3"}, 1, 1)).To(ConsistOf("1", "2", "3"))
})
})
})