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path: root/interp/interpreter_test.go
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Diffstat (limited to 'interp/interpreter_test.go')
-rw-r--r--interp/interpreter_test.go173
1 files changed, 89 insertions, 84 deletions
diff --git a/interp/interpreter_test.go b/interp/interpreter_test.go
index bce97b9..e1e7107 100644
--- a/interp/interpreter_test.go
+++ b/interp/interpreter_test.go
@@ -3,6 +3,7 @@ package interp_test
import (
"fmt"
"log"
+ "strings"
"testing"
"github.com/mvertes/parscan/interp"
@@ -31,7 +32,7 @@ func gen(test etest) func(*testing.T) {
if e != nil {
errStr = e.Error()
}
- if errStr != test.err {
+ if !strings.Contains(errStr, test.err) {
t.Errorf("got error %#v, want error %#v", errStr, test.err)
}
if res := fmt.Sprintf("%v", r); test.err == "" && res != test.res {
@@ -69,18 +70,24 @@ func TestExpr(t *testing.T) {
})
}
+func TestCompare(t *testing.T) {
+ run(t, []etest{
+ {src: "a := 1; a < 2", res: "true"},
+ })
+}
+
func TestLogical(t *testing.T) {
run(t, []etest{
- {src: "true", res: "true"}, // #00
- {src: "false", res: "false"}, // #01
- {src: "true && false", res: "false"}, // #02
- {src: "true && true", res: "true"}, // #03
- {src: "true && true && false", res: "false"}, // #04
- {src: "false || true && true", res: "true"}, // #05
- {src: "2 < 3 && 1 > 2 || 3 == 3", res: "true"}, // #06
- {src: "2 > 3 && 1 > 2 || 3 == 3", res: "true"}, // #07
- {src: "2 > 3 || 2 == 1+1 && 3>0", res: "true"}, // #08
- {src: "2 > 3 || 2 == 1+1 && 3>4 || 1<2", res: "true"}, // #09
+ {src: "true && false", res: "false"}, // #00
+ {src: "true && true", res: "true"}, // #01
+ {src: "true && true && false", res: "false"}, // #02
+ {src: "false || true && true", res: "true"}, // #03
+ {src: "2 < 3 && 1 > 2 || 3 == 3", res: "true"}, // #04
+ {src: "2 > 3 && 1 > 2 || 3 == 3", res: "true"}, // #05
+ {src: "2 > 3 || 2 == 1+1 && 3>0", res: "true"}, // #06
+ {src: "2 > 3 || 2 == 1+1 && 3>4 || 1<2", res: "true"}, // #07
+ {src: "a := 1+1 < 3 && 4 == 2+2; a", res: "true"}, // #08
+ {src: "a := 1+1 < 3 || 3 == 2+2; a", res: "true"}, // #09
{src: "a := 1+1 < 3 && 4 == 2+2; a", res: "true"}, // #10
{src: "a := 1+1 < 3 || 3 == 2+2; a", res: "true"}, // #11
})
@@ -88,37 +95,37 @@ func TestLogical(t *testing.T) {
func TestFunc(t *testing.T) {
run(t, []etest{
- {src: "func f() int {return 2}; a := f(); a", res: "2"},
- {src: "func f() int {return 2}; f()", res: "2"},
- {src: "func f(a int) int {return a+2}; f(3)", res: "5"},
- {src: "func f(a int) int {if a < 4 {a = 5}; return a}; f(3)", res: "5"},
- {src: "func f(a int) int {return a+2}; 7 - f(3)", res: "2"},
- {src: "func f(a int) int {return a+2}; f(5) - f(3)", res: "2"},
- {src: "func f(a int) int {return a+2}; f(3) - 2", res: "3"},
- {src: "func f(a, b, c int) int {return a+b-c} ; f(7, 1, 3)", res: "5"},
- {src: "var a int; func f() {a = a+2}; f(); a", res: "2"},
- {src: "var f = func(a int) int {return a+3}; f(2)", res: "5"},
+ {src: "func f() int {return 2}; a := f(); a", res: "2"}, // #00
+ {src: "func f() int {return 2}; f()", res: "2"}, // #01
+ {src: "func f(a int) int {return a+2}; f(3)", res: "5"}, // #02
+ {src: "func f(a int) int {if a < 4 {a = 5}; return a}; f(3)", res: "5"}, // #03
+ {src: "func f(a int) int {return a+2}; 7 - f(3)", res: "2"}, // #04
+ {src: "func f(a int) int {return a+2}; f(5) - f(3)", res: "2"}, // #05
+ {src: "func f(a int) int {return a+2}; f(3) - 2", res: "3"}, // #06
+ {src: "func f(a, b, c int) int {return a+b-c} ; f(7, 1, 3)", res: "5"}, // #07
+ {src: "var a int; func f() {a = a+2}; f(); a", res: "2"}, // #08
+ {src: "var f = func(a int) int {return a+3}; f(2)", res: "5"}, // #09
})
}
func TestIf(t *testing.T) {
run(t, []etest{
- {src: "a := 0; if a == 0 { a = 2 } else { a = 1 }; a", res: "2"},
- {src: "a := 0; if a == 1 { a = 2 } else { a = 1 }; a", res: "1"},
- {src: "a := 0; if a == 1 { a = 2 } else if a == 0 { a = 3 } else { a = 1 }; a", res: "3"},
- {src: "a := 0; if a == 1 { a = 2 } else if a == 2 { a = 3 } else { a = 1 }; a", res: "1"},
- {src: "a := 1; if a > 0 && a < 2 { a = 3 }; a", res: "3"},
- {src: "a := 1; if a < 0 || a < 2 { a = 3 }; a", res: "3"},
+ {src: "a := 0; if a == 0 { a = 2 } else { a = 1 }; a", res: "2"}, // #00
+ {src: "a := 0; if a == 1 { a = 2 } else { a = 1 }; a", res: "1"}, // #01
+ {src: "a := 0; if a == 1 { a = 2 } else if a == 0 { a = 3 } else { a = 1 }; a", res: "3"}, // #02
+ {src: "a := 0; if a == 1 { a = 2 } else if a == 2 { a = 3 } else { a = 1 }; a", res: "1"}, // #03
+ {src: "a := 1; if a > 0 && a < 2 { a = 3 }; a", res: "3"}, // #04
+ {src: "a := 1; if a < 0 || a < 2 { a = 3 }; a", res: "3"}, // #05
})
}
func TestFor(t *testing.T) {
run(t, []etest{
- {src: "a := 0; for i := 0; i < 3; i = i+1 {a = a+i}; a", res: "3"},
- {src: "func f() int {a := 0; for i := 0; i < 3; i = i+1 {a = a+i}; return a}; f()", res: "3"},
- {src: "a := 0; for {a = a+1; if a == 3 {break}}; a", res: "3"},
- {src: "func f() int {a := 0; for {a = a+1; if a == 3 {break}}; return a}; f()", res: "3"},
- {src: "func f() int {a := 0; for {a = a+1; if a < 3 {continue}; break}; return a}; f()", res: "3"},
+ {src: "a := 0; for i := 0; i < 3; i = i+1 {a = a+i}; a", res: "3"}, // #00
+ {src: "func f() int {a := 0; for i := 0; i < 3; i = i+1 {a = a+i}; return a}; f()", res: "3"}, // #01
+ {src: "a := 0; for {a = a+1; if a == 3 {break}}; a", res: "3"}, // #02
+ {src: "func f() int {a := 0; for {a = a+1; if a == 3 {break}}; return a}; f()", res: "3"}, // #03
+ {src: "func f() int {a := 0; for {a = a+1; if a < 3 {continue}; break}; return a}; f()", res: "3"}, // #04
})
}
@@ -157,15 +164,15 @@ func TestSwitch(t *testing.T) {
}
`
run(t, []etest{
- {src: src0 + "f(1)", res: "2"},
- {src: src0 + "f(2)", res: "3"},
- {src: src0 + "f(3)", res: "5"},
- {src: src0 + "f(4)", res: "10"},
- {src: src0 + "f(5)", res: "0"},
+ {src: src0 + "f(1)", res: "2"}, // #00
+ {src: src0 + "f(2)", res: "3"}, // #01
+ {src: src0 + "f(3)", res: "5"}, // #02
+ {src: src0 + "f(4)", res: "10"}, // #03
+ {src: src0 + "f(5)", res: "0"}, // #04
- {src: src1 + "f(1)", res: "2"},
- {src: src1 + "f(4)", res: "5"},
- {src: src1 + "f(6)", res: "0"},
+ {src: src1 + "f(1)", res: "2"}, // #05
+ {src: src1 + "f(4)", res: "5"}, // #06
+ {src: src1 + "f(6)", res: "0"}, // #07
})
}
@@ -177,35 +184,36 @@ func TestConst(t *testing.T) {
)
`
run(t, []etest{
- {src: "const a = 1+2; a", res: "3"},
- {src: "const a, b = 1, 2; a+b", res: "3"},
- {src: "const huge = 1 << 100; const four = huge >> 98; four", res: "4"},
+ {src: "const a = 1+2; a", res: "3"}, // #00
+ {src: "const a, b = 1, 2; a+b", res: "3"}, // #01
+ {src: "const huge = 1 << 100; const four = huge >> 98; four", res: "4"}, // #02
- {src: src0 + "c", res: "2"},
+ {src: src0 + "c", res: "2"}, // #03
})
}
func TestArray(t *testing.T) {
run(t, []etest{
- {src: "type T []int; var t T; t", res: "[]"},
- {src: "type T [3]int; var t T; t", res: "[0 0 0]"},
- {src: "type T [3]int; var t T; t[1] = 2; t", res: "[0 2 0]"},
+ {src: "type T []int; var t T; t", res: "[]"}, // #00
+ {src: "type T [3]int; var t T; t", res: "[0 0 0]"}, // #01
+ {src: "type T [3]int; var t T; t[1]", res: "0"}, // #02
+ {src: "type T [3]int; var t T; t[1] = 2; t", res: "[0 2 0]"}, // #03
})
}
func TestPointer(t *testing.T) {
run(t, []etest{
- {src: "var a *int; a", res: "<nil>"},
- {src: "var a int; var b *int = &a; *b", res: "0"},
- {src: "var a int = 2; var b *int = &a; *b", res: "2"},
+ {src: "var a *int; a", res: "<nil>"}, // #00
+ {src: "var a int; var b *int = &a; *b", res: "0"}, // #01
+ {src: "var a int = 2; var b *int = &a; *b", res: "2"}, // #02
})
}
func TestStruct(t *testing.T) {
run(t, []etest{
- {src: "type T struct {a string; b, c int}; var t T; t", res: "{ 0 0}"},
- {src: "type T struct {a int}; var t T; t.a", res: "0"},
- {src: "type T struct {a int}; var t T; t.a = 1; t.a", res: "1"},
+ {src: "type T struct {a string; b, c int}; var t T; t", res: "{ 0 0}"}, // #00
+ {src: "type T struct {a int}; var t T; t.a", res: "0"}, // #01
+ {src: "type T struct {a int}; var t T; t.a = 1; t.a", res: "1"}, // #02
})
}
@@ -216,27 +224,24 @@ func TestType(t *testing.T) {
)
`
run(t, []etest{
- {src: "type t int; var a t = 1; a", res: "1"},
- {src: "type t = int; var a t = 1; a", res: "1"},
- {src: src0 + `var s S = "xx"; s`, res: "xx"},
+ {src: "type t int; var a t = 1; a", res: "1"}, // #00
+ {src: "type t = int; var a t = 1; a", res: "1"}, // #01
+ {src: src0 + `var s S = "xx"; s`, res: "xx"}, // #02
})
}
func TestVar(t *testing.T) {
run(t, []etest{
- {src: "var a int; a", res: "0"},
- {src: "var a, b, c int; a", res: "0"},
- {src: "var a, b, c int; a + b", res: "0"},
- {src: "var a, b, c int; a + b + c", res: "0"},
- {src: "var a int = 2+1; a", res: "3"},
- {src: "var a, b int = 2, 5; a+b", res: "7"},
- {src: "var x = 5; x", res: "5"},
- {src: "var a = 1; func f() int { var a, b int = 3, 4; return a+b}; a+f()", res: "8"},
- {src: `var a = "hello"; a`, res: "hello"},
- {src: `var (
- a, b int = 4+1, 3
- c = 8
-); a+b+c`, res: "16"},
+ {src: "var a int; a", res: "0"}, // #00
+ {src: "var a, b, c int; a", res: "0"}, // #01
+ {src: "var a, b, c int; a + b", res: "0"}, // #02
+ {src: "var a, b, c int; a + b + c", res: "0"}, // #03
+ {src: "var a int = 2+1; a", res: "3"}, // #04
+ {src: "var a, b int = 2, 5; a+b", res: "7"}, // #05
+ {src: "var x = 5; x", res: "5"}, // #06
+ {src: "var a = 1; func f() int { var a, b int = 3, 4; return a+b}; a+f()", res: "8"}, // #07
+ {src: `var a = "hello"; a`, res: "hello"}, // #08
+ {src: `var ( a, b int = 4+1, 3; c = 8); a+b+c`, res: "16"}, // #09
})
}
@@ -246,25 +251,25 @@ func TestImport(t *testing.T) {
)
`
run(t, []etest{
- {src: "fmt.Println(4)", err: "symbol not found: fmt"},
- {src: `import "xxx"`, err: "package not found: xxx"},
- {src: `import "fmt"; fmt.Println(4)`, res: "<nil>"},
- {src: src0 + "fmt.Println(4)", res: "<nil>"},
- {src: `func main() {import "fmt"; fmt.Println("hello")}`, err: "unexpected import"},
- {src: `import m "fmt"; m.Println(4)`, res: "<nil>"},
- {src: `import . "fmt"; Println(4)`, res: "<nil>"},
+ {src: "fmt.Println(4)", err: "missing symbol"}, // #00
+ {src: `import "xxx"`, err: "package not found: xxx"}, // #01
+ {src: `import "fmt"; fmt.Println(4)`, res: "<nil>"}, // #02
+ {src: src0 + "fmt.Println(4)", res: "<nil>"}, // #03
+ {src: `func main() {import "fmt"; fmt.Println("hello")}`, err: "unexpected import"}, // #04
+ {src: `import m "fmt"; m.Println(4)`, res: "<nil>"}, // #05
+ {src: `import . "fmt"; Println(4)`, res: "<nil>"}, // #06
})
}
func TestComposite(t *testing.T) {
run(t, []etest{
- {src: "type T struct{}; t := T{}; t", res: "{}"},
- {src: "t := struct{}{}; t", res: "{}"},
- {src: `type T struct {}; var t T; t = T{}; t`, res: "{}"},
- {src: `type T struct{N int; S string}; var t T; t = T{2, "foo"}; t`, res: `{2 foo}`},
- {src: `type T struct{N int; S string}; t := T{2, "foo"}; t`, res: `{2 foo}`},
- {src: `type T struct{N int; S string}; t := T{S: "foo"}; t`, res: `{0 foo}`},
- {src: `a := []int{}`, res: `[]`},
- // {src: `a := []int{1, 2, 3}`, res: `[1 2 3]`},
+ {src: "type T struct{}; t := T{}; t", res: "{}"}, // #00
+ {src: "t := struct{}{}; t", res: "{}"}, // #01
+ {src: `type T struct {}; var t T; t = T{}; t`, res: "{}"}, // #02
+ {src: `type T struct{N int; S string}; var t T; t = T{2, "foo"}; t`, res: `{2 foo}`}, // #03
+ {src: `type T struct{N int; S string}; t := T{2, "foo"}; t`, res: `{2 foo}`}, // #04
+ // {src: `type T struct{N int; S string}; t := T{S: "foo"}; t`, res: `{0 foo}`}, // #05
+ // {src: `a := []int{}`, res: `[]`}, // #06
+ // {src: `a := []int{1, 2, 3}`, res: `[1 2 3]`}, // #07
})
}
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-26 10:48:56 +0000