331 lines
5.4 KiB
Go
331 lines
5.4 KiB
Go
// Copyright 2021 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package resolver_test
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import (
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"fmt"
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"strings"
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"testing"
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"dawn.googlesource.com/dawn/tools/src/cmd/builtin-gen/parser"
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"dawn.googlesource.com/dawn/tools/src/cmd/builtin-gen/resolver"
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)
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func TestResolver(t *testing.T) {
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type test struct {
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src string
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err string
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}
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success := ""
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for _, test := range []test{
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{
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`type X`,
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success,
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}, {
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`enum E {}`,
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success,
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}, {
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`enum E {A B C}`,
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success,
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}, {
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`type X`,
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success,
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}, {
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`[[display("Y")]] type X`,
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success,
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}, {
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`
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type x
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match y: x`,
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success,
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}, {
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`
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enum e {a b c}
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match y: c | a | b`,
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success,
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}, {
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`fn f()`,
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success,
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}, {
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`fn f<T>()`,
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success,
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}, {
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`
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type f32
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fn f<N: num>()`,
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success,
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}, {
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`
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enum e { a b c }
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fn f<N: e>()`,
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success,
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}, {
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`
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type f32
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fn f<T>(T) -> f32`,
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success,
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}, {
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`
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type f32
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type P<T>
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match m: f32
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fn f<T: m>(P<T>) -> T`,
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success,
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}, {
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`
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type f32
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type P<T>
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match m: f32
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fn f(P<m>)`,
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success,
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}, {
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`
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enum e { a }
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fn f(a)`,
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success,
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}, {
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`
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enum e { a b }
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type T<E: e>
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match m: a
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fn f<E: m>(T<E>)`,
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success,
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}, {
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`
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enum e { a b }
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type T<E: e>
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match m: a
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fn f(T<m>)`,
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success,
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}, {
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`
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enum e { a }
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type T<E: e>
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fn f(T<a>)`,
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success,
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}, {
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`
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type T<E: num>
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fn f<E: num>(T<E>)`,
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success,
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}, {
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`fn f<T>(T)`,
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success,
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}, {
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`
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enum e { a b }
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fn f<E: e>()`,
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success,
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}, {
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`
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enum e { a b }
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match m: a | b
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fn f<E: m>()`,
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success,
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}, {
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`
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type f32
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type T<x>
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fn f(T<T<f32>>)`,
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success,
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}, {
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`enum E {A A}`,
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`
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file.txt:1:6 'A' already declared
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First declared here: file.txt:1:6
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`,
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},
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{
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`type X type X`,
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`
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file.txt:1:13 'X' already declared
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First declared here: file.txt:1:6`,
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}, {
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`[[meow]] type X`,
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`
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file.txt:1:3 unknown decoration
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`,
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}, {
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`[[display("Y", "Z")]] type X`,
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`
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file.txt:1:3 expected a single value for 'display' decoration`,
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}, {
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`
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enum e { a }
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enum e { b }`,
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`
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file.txt:2:6 'e' already declared
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First declared here: file.txt:1:6`,
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}, {
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`
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type X
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match X : X`,
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`
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file.txt:2:7 'X' already declared
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First declared here: file.txt:1:6`,
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}, {
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`type T<X>
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match M : T`,
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`file.txt:2:11 'T' requires 1 template arguments, but 0 were provided`,
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}, {
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`
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match x: y`,
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`
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file.txt:1:10 cannot resolve 'y'
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`,
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}, {
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`
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type a
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match x: a | b`,
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`
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file.txt:2:14 cannot resolve 'b'
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`,
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}, {
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`
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type a
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enum e { b }
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match x: a | b`,
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`
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file.txt:3:14 'b' resolves to enum entry 'e.b' but type is expected
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`,
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}, {
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`
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type a
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type b
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match x: a | b | a`,
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`
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file.txt:3:18 duplicate option 'a' in matcher
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First declared here: file.txt:3:10
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`,
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}, {
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`
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enum e { a c }
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match x: a | b | c`,
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`
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file.txt:2:14 enum 'e' does not contain 'b'
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`,
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}, {
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`
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enum e { a }
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match x: a
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match x: a`,
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`
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file.txt:3:7 'x' already declared
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First declared here: file.txt:2:7
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`,
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}, {
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`
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type t
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match x: t
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match y: x`,
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`
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'y' cannot be used for matcher
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`,
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}, {
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`fn f(u)`,
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`file.txt:1:6 cannot resolve 'u'`,
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}, {
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`fn f() -> u`,
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`file.txt:1:11 cannot resolve 'u'`,
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}, {
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`fn f<T: u>()`,
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`file.txt:1:9 cannot resolve 'u'`,
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}, {
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`
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enum e { a }
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fn f() -> e`,
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`file.txt:2:11 cannot use 'e' as return type. Must be a type or template type`,
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}, {
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`
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type T<x>
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fn f(T<u>)`,
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`file.txt:2:8 cannot resolve 'u'`,
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}, {
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`
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type x
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fn f<T>(T<x>)`,
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`file.txt:2:9 'T' template parameters do not accept template arguments`,
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}, {
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`
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type A<N: num>
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type B
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fn f(A<B>)`,
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`file.txt:3:8 cannot use type 'B' as template number`,
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}, {
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`
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type A<N>
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enum E { b }
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fn f(A<b>)`,
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`file.txt:3:8 cannot use enum entry 'E.b' as template type`,
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}, {
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`
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type T
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type P<N: num>
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match m: T
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fn f(P<m>)`,
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`file.txt:4:8 cannot use type matcher 'm' as template number`,
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}, {
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`
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type P<N: num>
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enum E { b }
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fn f(P<E>)`,
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`file.txt:3:8 cannot use enum 'E' as template number`,
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}, {
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`
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type P<N: num>
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enum E { a b }
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match m: a | b
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fn f(P<m>)`,
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`file.txt:4:8 cannot use enum matcher 'm' as template number`,
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}, {
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`
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type P<N: num>
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enum E { a b }
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match m: a | b
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fn f<M: m>(P<M>)`,
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`file.txt:4:14 cannot use template enum 'E' as template number`,
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}, {
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`
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enum E { a }
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type T<X: a>`,
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`file.txt:2:8 invalid template parameter type 'a'`,
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}, {
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`
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enum E { a }
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fn f<M: a>()`,
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`file.txt:2:6 invalid template parameter type 'a'`,
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},
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} {
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ast, err := parser.Parse(strings.TrimSpace(string(test.src)), "file.txt")
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if err != nil {
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t.Errorf("Unexpected parser error: %v", err)
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continue
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}
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expectErr := strings.TrimSpace(test.err)
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_, err = resolver.Resolve(ast)
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if err != nil {
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gotErr := strings.TrimSpace(fmt.Sprint(err))
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if gotErr != expectErr {
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t.Errorf("While parsing:\n%s\nGot error:\n%s\nExpected:\n%s", test.src, gotErr, expectErr)
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}
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} else if expectErr != success {
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t.Errorf("While parsing:\n%s\nGot no error, expected error:\n%s", test.src, expectErr)
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}
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}
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}
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