chore: Refactor Sample Code to Separate Files

Split the code in `source.go` to individual sample files, one per rule.
This will help contributors submit samples for new rules, or
improvements to existing rules. The cgo sample was all that was left
after refactoring, which resulted in its own sample file.

Sample code was also formatted to have some level of consistency.
Each sample go "file" attempts to keep the formatting of `gofmt`, and
each code sample is in its own section in the sample file.

Signed-off-by: Adam Kaplan <adam@adambkaplan.com>

testutils/g101_samples.go

@@ -0,0 +1,348 @@
+package testutils
+
+import "github.com/securego/gosec/v2"
+
+var (
+	// SampleCodeG101 code snippets for hardcoded credentials
+	SampleCodeG101 = []CodeSample{
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	username := "admin"
+	password := "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
+	fmt.Println("Doing something with: ", username, password)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+// Entropy check should not report this error by default
+package main
+
+import "fmt"
+
+func main() {
+	username := "admin"
+	password := "secret"
+	fmt.Println("Doing something with: ", username, password)
+}
+`}, 0, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+var password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
+
+func main() {
+	username := "admin"
+	fmt.Println("Doing something with: ", username, password)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+const password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
+
+func main() {
+	username := "admin"
+	fmt.Println("Doing something with: ", username, password)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+const (
+	username = "user"
+	password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
+)
+
+func main() {
+	fmt.Println("Doing something with: ", username, password)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+var password string
+
+func init() {
+	password = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+const (
+	ATNStateSomethingElse = 1
+	ATNStateTokenStart = 42
+)
+
+func main() {
+	println(ATNStateTokenStart)
+}
+`}, 0, gosec.NewConfig()},
+		{[]string{`
+package main
+
+const (
+	ATNStateTokenStart = "f62e5bcda4fae4f82370da0c6f20697b8f8447ef"
+)
+
+func main() {
+	println(ATNStateTokenStart)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	var password string
+	if password == "f62e5bcda4fae4f82370da0c6f20697b8f8447ef" {
+		fmt.Println("password equality")
+	}
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	var password string
+	if "f62e5bcda4fae4f82370da0c6f20697b8f8447ef" == password {
+		fmt.Println("password equality")
+	}
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	var password string
+	if password != "f62e5bcda4fae4f82370da0c6f20697b8f8447ef" {
+		fmt.Println("password equality")
+	}
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	var password string
+	if "f62e5bcda4fae4f82370da0c6f20697b8f8447ef" != password {
+		fmt.Println("password equality")
+	}
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	var p string
+	if p != "f62e5bcda4fae4f82370da0c6f20697b8f8447ef" {
+		fmt.Println("password equality")
+	}
+}
+`}, 0, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	var p string
+	if "f62e5bcda4fae4f82370da0c6f20697b8f8447ef" != p {
+		fmt.Println("password equality")
+	}
+}
+`}, 0, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+const (
+	pw = "KjasdlkjapoIKLlka98098sdf012U/rL2sLdBqOHQUlt5Z6kCgKGDyCFA=="
+)
+
+func main() {
+	fmt.Println(pw)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+var (
+	pw string
+)
+
+func main() {
+	pw = "KjasdlkjapoIKLlka98098sdf012U/rL2sLdBqOHQUlt5Z6kCgKGDyCFA=="
+	fmt.Println(pw)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+const (
+	cred = "KjasdlkjapoIKLlka98098sdf012U/rL2sLdBqOHQUlt5Z6kCgKGDyCFA=="
+)
+
+func main() {
+	fmt.Println(cred)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+var (
+	cred string
+)
+
+func main() {
+	cred = "KjasdlkjapoIKLlka98098sdf012U/rL2sLdBqOHQUlt5Z6kCgKGDyCFA=="
+	fmt.Println(cred)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+const (
+	apiKey = "KjasdlkjapoIKLlka98098sdf012U"
+)
+
+func main() {
+	fmt.Println(apiKey)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+var (
+	apiKey string
+)
+
+func main() {
+	apiKey = "KjasdlkjapoIKLlka98098sdf012U"
+	fmt.Println(apiKey)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+const (
+	bearer = "Bearer: 2lkjdfoiuwer092834kjdwf09"
+)
+
+func main() {
+	fmt.Println(bearer)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+var (
+	bearer string
+)
+
+func main() {
+	bearer = "Bearer: 2lkjdfoiuwer092834kjdwf09"
+	fmt.Println(bearer)
+}
+`}, 1, gosec.NewConfig()},
+	}
+
+	// SampleCodeG101Values code snippets for hardcoded credentials
+	SampleCodeG101Values = []CodeSample{
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	customerNameEnvKey := "FOO_CUSTOMER_NAME"
+	fmt.Println(customerNameEnvKey)
+}
+`}, 0, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	txnID := "3637cfcc1eec55a50f78a7c435914583ccbc75a21dec9a0e94dfa077647146d7"
+	fmt.Println(txnID)
+}
+`}, 0, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	urlSecret := "https://username:abcdef0123456789abcdef0123456789abcdef01@contoso.com/"
+	fmt.Println(urlSecret)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	githubToken := "ghp_iR54dhCYg9Tfmoywi9xLmmKZrrnAw438BYh3"
+	fmt.Println(githubToken)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	awsAccessKeyID := "AKIAI44QH8DHBEXAMPLE"
+	fmt.Println(awsAccessKeyID)
+}
+`}, 1, gosec.NewConfig()},
+		{[]string{`
+package main
+
+import "fmt"
+
+func main() {
+	compareGoogleAPI := "test"
+	if compareGoogleAPI == "AIzajtGS_aJGkoiAmSbXzu9I-1eytAi9Lrlh-vT" {
+		fmt.Println(compareGoogleAPI)
+	}
+}
+`}, 1, gosec.NewConfig()},
+	}
+)