10 files changed, 122 insertions, 3 deletions
diff --git a/testing/gen-languages-all b/testing/gen-languages-all
index d9b01bd..eb7cd70 100755
--- a/testing/gen-languages-all
+++ b/testing/gen-languages-all
@@ -2,9 +2,9 @@
 import sys
 
 LANGUAGES = [
-    'conda', 'coursier', 'docker', 'dotnet', 'docker_image', 'fail', 'golang',
-    'node', 'perl', 'pygrep', 'python', 'ruby', 'rust', 'script', 'swift',
-    'system',
+    'conda', 'coursier', 'docker', 'docker_image', 'dotnet', 'fail', 'golang',
+    'node', 'perl', 'pygrep', 'python', 'r', 'ruby', 'rust', 'script',
+    'swift', 'system',
 ]
 FIELDS = [
     'ENVIRONMENT_DIR', 'get_default_version', 'healthy', 'install_environment',
diff --git a/testing/get-r.ps1 b/testing/get-r.ps1
new file mode 100644
index 0000000..e7b7b61
--- /dev/null
+++ b/testing/get-r.ps1
@@ -0,0 +1,6 @@
+$dir = $Env:Temp
+$urlR = "https://cran.r-project.org/bin/windows/base/old/4.0.4/R-4.0.4-win.exe"
+$outputR = "$dir\R-win.exe"
+$wcR = New-Object System.Net.WebClient
+$wcR.DownloadFile($urlR, $outputR)
+Start-Process -FilePath $outputR -ArgumentList "/S /v/qn"
diff --git a/testing/get-r.sh b/testing/get-r.sh
new file mode 100755
index 0000000..5d09828
--- /dev/null
+++ b/testing/get-r.sh
@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+sudo apt install r-base
+# create empty folder for user library.
+# necessary for non-root users who have
+# never installed an R package before.
+# Alternatively, we require the renv
+# package to be installed already, then we can
+# omit that.
+Rscript -e 'dir.create(Sys.getenv("R_LIBS_USER"), recursive = TRUE)'
diff --git a/testing/resources/golang_hooks_repo/go.mod b/testing/resources/golang_hooks_repo/go.mod
new file mode 100644
index 0000000..523bfc9
--- /dev/null
+++ b/testing/resources/golang_hooks_repo/go.mod
@@ -0,0 +1 @@
+module golang-hello-world
diff --git a/testing/resources/r_hooks_repo/.pre-commit-hooks.yaml b/testing/resources/r_hooks_repo/.pre-commit-hooks.yaml
new file mode 100644
index 0000000..b3545d9
--- /dev/null
+++ b/testing/resources/r_hooks_repo/.pre-commit-hooks.yaml
@@ -0,0 +1,48 @@
+# parsing file
+-   id: parse-file-no-opts-no-args
+    name: Say hi
+    entry: Rscript parse-file-no-opts-no-args.R
+    language: r
+    types: [r]
+-   id: parse-file-no-opts-args
+    name: Say hi
+    entry: Rscript parse-file-no-opts-args.R
+    args: [--no-cache]
+    language: r
+    types: [r]
+## parsing expr
+-   id: parse-expr-no-opts-no-args-1
+    name: Say hi
+    entry: Rscript -e '1+1'
+    language: r
+    types: [r]
+-   id: parse-expr-args-in-entry-2
+    name: Say hi
+    entry: Rscript -e '1+1' -e '3' --no-cache3
+    language: r
+    types: [r]
+# real world
+-   id: hello-world
+    name: Say hi
+    entry: Rscript hello-world.R
+    args: [blibla]
+    language: r
+    types: [r]
+-   id: hello-world-inline
+    name: Say hi
+    entry: |
+      Rscript -e
+      'stopifnot(
+        packageVersion("rprojroot") == "1.0",
+        packageVersion("gli.clu") == "0.0.0.9000"
+      )
+      cat(commandArgs(trailingOnly = TRUE), "from R!\n", sep = ", ")
+      '
+    args: ['Hi-there']
+    language: r
+    types: [r]
+-   id: additional-deps
+    name: Check additional deps
+    entry: Rscript additional-deps.R
+    language: r
+    types: [r]
diff --git a/testing/resources/r_hooks_repo/DESCRIPTION b/testing/resources/r_hooks_repo/DESCRIPTION
new file mode 100644
index 0000000..0e597a8
--- /dev/null
+++ b/testing/resources/r_hooks_repo/DESCRIPTION
@@ -0,0 +1,19 @@
+Package: gli.clu
+Title: What the Package Does (One Line, Title Case)
+Type: Package
+Version: 0.0.0.9000
+Authors@R:
+    person(given = "First",
+           family = "Last",
+           role = c("aut", "cre"),
+           email = "first.last@example.com",
+           comment = c(ORCID = "YOUR-ORCID-ID"))
+Description: What the package does (one paragraph).
+License: `use_mit_license()`, `use_gpl3_license()` or friends to
+    pick a license
+Encoding: UTF-8
+LazyData: true
+Roxygen: list(markdown = TRUE)
+RoxygenNote: 7.1.1
+Imports:
+    rprojroot
diff --git a/testing/resources/r_hooks_repo/additional-deps.R b/testing/resources/r_hooks_repo/additional-deps.R
new file mode 100755
index 0000000..bc14595
--- /dev/null
+++ b/testing/resources/r_hooks_repo/additional-deps.R
@@ -0,0 +1,2 @@
+suppressPackageStartupMessages(library("cachem"))
+cat("OK\n")
diff --git a/testing/resources/r_hooks_repo/hello-world.R b/testing/resources/r_hooks_repo/hello-world.R
new file mode 100755
index 0000000..bf8d92f
--- /dev/null
+++ b/testing/resources/r_hooks_repo/hello-world.R
@@ -0,0 +1,5 @@
+stopifnot(
+    packageVersion('rprojroot') == '1.0',
+    packageVersion('gli.clu') == '0.0.0.9000'
+)
+cat("Hello, World, from R!\n")
diff --git a/testing/resources/r_hooks_repo/renv.lock b/testing/resources/r_hooks_repo/renv.lock
new file mode 100644
index 0000000..d7d5fdc
--- /dev/null
+++ b/testing/resources/r_hooks_repo/renv.lock
@@ -0,0 +1,27 @@
+{
+  "R": {
+    "Version": "4.0.3",
+    "Repositories": [
+      {
+        "Name": "CRAN",
+        "URL": "https://cloud.r-project.org"
+      }
+    ]
+  },
+  "Packages": {
+    "renv": {
+      "Package": "renv",
+      "Version": "0.12.5",
+      "Source": "Repository",
+      "Repository": "CRAN",
+      "Hash": "5c0cdb37f063c58cdab3c7e9fbb8bd2c"
+    },
+    "rprojroot": {
+      "Package": "rprojroot",
+      "Version": "1.0",
+      "Source": "Repository",
+      "Repository": "CRAN",
+      "Hash": "86704667fe0860e4fec35afdfec137f3"
+    }
+  }
+}
diff --git a/testing/util.py b/testing/util.py
index 1f8cb35..1364453 100644
--- a/testing/util.py
+++ b/testing/util.py
@@ -70,6 +70,7 @@ def run_opts(
         show_diff_on_failure=False,
         commit_msg_filename='',
         checkout_type='',
+        is_squash_merge='',
 ):
     # These are mutually exclusive
     assert not (all_files and files)
@@ -88,6 +89,7 @@ def run_opts(
         show_diff_on_failure=show_diff_on_failure,
         commit_msg_filename=commit_msg_filename,
         checkout_type=checkout_type,
+        is_squash_merge=is_squash_merge,
     )