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update tests for index/slice operators

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This commit is contained in:
Daniel Kang 2019-01-14 04:26:20 -08:00
parent de70f7c40d
commit dc16c9abb2
2 changed files with 54 additions and 44 deletions
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56
runtime/vm_array_test.go
View file

@ -1,44 +1,42 @@
package runtime_test
import (
"fmt"
"testing"
)
func TestArray(t *testing.T) {
expect(t, `out = [1, 2 * 2, 3 + 3]`, ARR{1, 4, 6})
expect(t, `out = [1, 2, 3][0]`, 1)
expect(t, `out = [1, 2, 3][1]`, 2)
expect(t, `out = [1, 2, 3][2]`, 3)
expect(t, `i := 0; out = [1, 2, 3][i]`, 1)
expect(t, `out = [1, 2, 3][1 + 1]`, 3)
expect(t, `arr := [1, 2, 3]; out = arr[2]`, 3)
expect(t, `arr := [1, 2, 3]; out = arr[0] + arr[1] + arr[2]`, 6)
expect(t, `arr := [1, 2, 3]; i := arr[0]; out = arr[i]`, 2)
expect(t, `out = [1, 2, 3][1+1]`, 3)
expect(t, `a := 1; out = [1, 2, 3][a+1]`, 3)
expect(t, `out = [1, 2, 3][:]`, ARR{1, 2, 3})
expect(t, `out = [1, 2, 3][0:3]`, ARR{1, 2, 3})
expect(t, `out = [1, 2, 3][1:]`, ARR{2, 3})
expect(t, `out = [1, 2, 3][1:2]`, ARR{2})
expect(t, `out = [1, 2, 3][:2]`, ARR{1, 2})
expect(t, `out = [1, 2, 3][1:1]`, ARR{})
expect(t, `out = [1, 2, 3][3-2:1+1]`, ARR{2})
expect(t, `a := 1; out = [1, 2, 3][a-1:a+1]`, ARR{1, 2})
// array copy-by-reference
expect(t, `a1 := [1, 2, 3]; a2 := a1; a1[0] = 5; out = a2`, ARR{5, 2, 3})
expect(t, `func () { a1 := [1, 2, 3]; a2 := a1; a1[0] = 5; out = a2 }()`, ARR{5, 2, 3})
expectError(t, `[1, 2, 3][3]`)
expectError(t, `[1, 2, 3][-1]`)
// index operator
arr := ARR{1, 2, 3, 4, 5, 6}
arrStr := `[1, 2, 3, 4, 5, 6]`
arrLen := 6
for idx := 0; idx < arrLen; idx++ {
expect(t, fmt.Sprintf("out = %s[%d]", arrStr, idx), arr[idx])
expect(t, fmt.Sprintf("out = %s[0 + %d]", arrStr, idx), arr[idx])
expect(t, fmt.Sprintf("out = %s[1 + %d - 1]", arrStr, idx), arr[idx])
expect(t, fmt.Sprintf("idx := %d; out = %s[idx]", idx, arrStr), arr[idx])
}
expectError(t, fmt.Sprintf("%s[%d]", arrStr, -1))
expectError(t, fmt.Sprintf("%s[%d]", arrStr, arrLen))
expectError(t, `[1, 2, 3][-1:]`)
expectError(t, `[1, 2, 3][:4]`)
expectError(t, `[1, 2, 3][-1:3]`)
expectError(t, `[1, 2, 3][0:4]`)
expectError(t, `[1, 2, 3][2:1]`)
// slice operator
for low := 0; low < arrLen; low++ {
for high := low; high <= arrLen; high++ {
expect(t, fmt.Sprintf("out = %s[%d:%d]", arrStr, low, high), arr[low:high])
expect(t, fmt.Sprintf("out = %s[0 + %d : 0 + %d]", arrStr, low, high), arr[low:high])
expect(t, fmt.Sprintf("out = %s[1 + %d - 1 : 1 + %d - 1]", arrStr, low, high), arr[low:high])
expect(t, fmt.Sprintf("out = %s[:%d]", arrStr, high), arr[:high])
expect(t, fmt.Sprintf("out = %s[%d:]", arrStr, low), arr[low:])
expect(t, fmt.Sprintf("out = %s[:]", arrStr), arr[:])
}
}
expectError(t, fmt.Sprintf("%s[%d:]", arrStr, -1))
expectError(t, fmt.Sprintf("%s[:%d]", arrStr, arrLen+1))
expectError(t, fmt.Sprintf("%s[%d:%d]", arrStr, 2, 1))
}

42
runtime/vm_string_test.go
View file

@ -1,6 +1,7 @@
package runtime_test
import (
"fmt"
"testing"
)
@ -13,20 +14,31 @@ func TestString(t *testing.T) {
expect(t, `out = "Hello" != "Hello"`, false)
expect(t, `out = "Hello" != "World"`, true)
expect(t, `out = "abcde"[0]`, 'a')
expect(t, `out = "abcde"[4]`, 'e')
expectError(t, `out = "abcde"[-1]`)
expectError(t, `out = "abcde"[5]`)
// index operator
str := "abcdef"
strStr := `"abcdef"`
strLen := 6
for idx := 0; idx < strLen; idx++ {
expect(t, fmt.Sprintf("out = %s[%d]", strStr, idx), str[idx])
expect(t, fmt.Sprintf("out = %s[0 + %d]", strStr, idx), str[idx])
expect(t, fmt.Sprintf("out = %s[1 + %d - 1]", strStr, idx), str[idx])
expect(t, fmt.Sprintf("idx := %d; out = %s[idx]", idx, strStr), str[idx])
}
expectError(t, fmt.Sprintf("%s[%d]", strStr, -1))
expectError(t, fmt.Sprintf("%s[%d]", strStr, strLen))
expect(t, `out = "abcde"[:]`, "abcde")
expect(t, `out = "abcde"[0:5]`, "abcde")
expect(t, `out = "abcde"[1:]`, "bcde")
expect(t, `out = "abcde"[:4]`, "abcd")
expect(t, `out = "abcde"[1:4]`, "bcd")
expect(t, `out = "abcde"[2:3]`, "c")
expect(t, `out = "abcde"[2:2]`, "")
expectError(t, `out = "abcde"[-1:]`)
expectError(t, `out = "abcde"[:6]`)
expectError(t, `out = "abcde"[-1:6]`)
expectError(t, `out = "abcde"[3:2]`)
// slice operator
for low := 0; low < strLen; low++ {
for high := low; high <= strLen; high++ {
expect(t, fmt.Sprintf("out = %s[%d:%d]", strStr, low, high), str[low:high])
expect(t, fmt.Sprintf("out = %s[0 + %d : 0 + %d]", strStr, low, high), str[low:high])
expect(t, fmt.Sprintf("out = %s[1 + %d - 1 : 1 + %d - 1]", strStr, low, high), str[low:high])
expect(t, fmt.Sprintf("out = %s[:%d]", strStr, high), str[:high])
expect(t, fmt.Sprintf("out = %s[%d:]", strStr, low), str[low:])
expect(t, fmt.Sprintf("out = %s[:]", strStr), str[:])
}
}
expectError(t, fmt.Sprintf("%s[%d:]", strStr, -1))
expectError(t, fmt.Sprintf("%s[:%d]", strStr, strLen+1))
expectError(t, fmt.Sprintf("%s[%d:%d]", strStr, 2, 1))
}