1 files changed, 70 insertions, 0 deletions
diff --git a/src/cmd/go/testdata/script/mod_get_changes.txt b/src/cmd/go/testdata/script/mod_get_changes.txt
new file mode 100644
index 0000000000..3287b2a609
--- /dev/null
+++ b/src/cmd/go/testdata/script/mod_get_changes.txt
@@ -0,0 +1,70 @@
+# When adding a requirement, 'go get' prints a message for the requirement
+# and for changed explicit dependencies. 'go get' does not print messages
+# for changed indirect dependencies.
+go list -m all
+! stdout golang.org/x/text
+go get -d rsc.io/quote@v1.5.2
+stderr '^go get: added rsc.io/quote v1.5.2$'
+stderr '^go get: upgraded rsc.io/sampler v1.0.0 => v1.3.0$'
+! stderr '^go get.*golang.org/x/text'
+go list -m all
+stdout golang.org/x/text
+cmp go.mod go.mod.upgrade
+
+# When removing a requirement, 'go get' prints a message for the requiremnent
+# and for changed explicit dependencies. 'go get' does not print messages
+# for changed indirect dependencies.
+go get -d rsc.io/sampler@none
+stderr '^go get: downgraded rsc.io/quote v1.5.2 => v1.3.0$'
+stderr '^go get: removed rsc.io/sampler v1.3.0$'
+! stderr '^go get.*golang.org/x/text'
+cmp go.mod go.mod.downgrade
+
+# When removing or downgrading a requirement, 'go get' also prints a message
+# for explicit dependencies removed as a consequence.
+cp go.mod.usequote go.mod
+go get -d rsc.io/quote@v1.5.1
+stderr '^go get: downgraded rsc.io/quote v1.5.2 => v1.5.1$'
+stderr '^go get: removed usequote v0.0.0$'
+
+-- go.mod --
+module m
+
+go 1.16
+
+require rsc.io/sampler v1.0.0
+-- go.sum --
+rsc.io/sampler v1.0.0 h1:SRJnjyQ07sAtq6G4RcfJEmz8JxqLyj3PoGXG2VhbDWo=
+rsc.io/sampler v1.0.0/go.mod h1:cqxpM3ZVz9VtirqxZPmrWzkQ+UkiNiGtkrN+B+i8kx8=
+-- go.mod.upgrade --
+module m
+
+go 1.16
+
+require (
+	rsc.io/quote v1.5.2 // indirect
+	rsc.io/sampler v1.3.0
+)
+-- go.mod.downgrade --
+module m
+
+go 1.16
+
+require (
+	golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c // indirect
+	rsc.io/quote v1.3.0 // indirect
+)
+-- go.mod.usequote --
+module m
+
+go 1.16
+
+require usequote v0.0.0
+
+replace usequote => ./usequote
+-- usequote/go.mod --
+module usequote
+
+go 1.16
+
+require rsc.io/quote v1.5.2