| 1 | // Copyright 2018 The Go Authors. All rights reserved. |
|---|---|
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | package findcall_test |
| 6 | |
| 7 | import ( |
| 8 | "testing" |
| 9 | |
| 10 | "golang.org/x/tools/go/analysis/analysistest" |
| 11 | "golang.org/x/tools/go/analysis/passes/findcall" |
| 12 | ) |
| 13 | |
| 14 | func init() { |
| 15 | findcall.Analyzer.Flags.Set("name", "println") |
| 16 | } |
| 17 | |
| 18 | // TestFromStringLiterals demonstrates how to test an analysis using |
| 19 | // a table of string literals for each test case. |
| 20 | // |
| 21 | // Such tests are typically quite compact. |
| 22 | func TestFromStringLiterals(t *testing.T) { |
| 23 | |
| 24 | for _, test := range [...]struct { |
| 25 | desc string |
| 26 | pkgpath string |
| 27 | files map[string]string |
| 28 | }{ |
| 29 | { |
| 30 | desc: "SimpleTest", |
| 31 | pkgpath: "main", |
| 32 | files: map[string]string{"main/main.go": `package main // want package:"found" |
| 33 | |
| 34 | func main() { |
| 35 | println("hello") // want "call of println" |
| 36 | print("goodbye") // not a call of println |
| 37 | } |
| 38 | |
| 39 | func println(s string) {} // want println:"found"`, |
| 40 | }, |
| 41 | }, |
| 42 | } { |
| 43 | t.Run(test.desc, func(t *testing.T) { |
| 44 | dir, cleanup, err := analysistest.WriteFiles(test.files) |
| 45 | if err != nil { |
| 46 | t.Fatal(err) |
| 47 | } |
| 48 | defer cleanup() |
| 49 | analysistest.Run(t, dir, findcall.Analyzer, test.pkgpath) |
| 50 | }) |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | // TestFromFileSystem demonstrates how to test an analysis using input |
| 55 | // files stored in the file system. |
| 56 | // |
| 57 | // These tests have the advantages that test data can be edited |
| 58 | // directly, and that files named in error messages can be opened. |
| 59 | // However, they tend to spread a small number of lines of text across a |
| 60 | // rather deep directory hierarchy, and obscure similarities among |
| 61 | // related tests, especially when tests involve multiple packages, or |
| 62 | // multiple variants of a single scenario. |
| 63 | func TestFromFileSystem(t *testing.T) { |
| 64 | testdata := analysistest.TestData() |
| 65 | analysistest.RunWithSuggestedFixes(t, testdata, findcall.Analyzer, "a") // loads testdata/src/a/a.go. |
| 66 | } |
| 67 |
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