tools/trim: convert inline tests to txtar

txtar is the preferred mechanism for tests that drive cue.
Convert all existing trim tests to txtar.
The txtar tests run as part of the existing TestTrimFiles target
(renamed from TestData to be a little more descriptive).
Remove TestX because the TxTarTest code supports DebugArchive which
allows easy overriding for the purposes of experimentation.

Signed-off-by: Matthew Sackman <[email protected]>
Change-Id: I985f2e27b32fe01fb6b36b5e124cbb5c986c180e
Reviewed-on: https://review.gerrithub.io/c/cue-lang/cue/+/1197348
Reviewed-by: Daniel Martí <[email protected]>
TryBot-Result: CUEcueckoo <[email protected]>

tools/trim/testdata/defaults_can_remove_non-defaults.txtar

@@ -0,0 +1,8 @@
+# TODO: make this optional
+-- in.cue --
+foo: [string]: a: *1 | int
+foo: b: a: 1
+-- out/trim --
+== in.cue
+foo: [string]: a: *1 | int
+foo: b: {}

tools/trim/testdata/do_not_overmark_comprehension.txtar

@@ -0,0 +1,27 @@
+-- in.cue --
+foo: multipath: {
+	t: [string]: { x: 5 }
+
+	// Don't remove u!
+	t: u: { x: 5 }
+}
+
+group: {
+	for k, v in foo {
+		comp: "\(k)": v
+	}
+}
+-- out/trim --
+== in.cue
+foo: multipath: {
+	t: [string]: {x: 5}
+
+	// Don't remove u!
+	t: u: {}
+}
+
+group: {
+	for k, v in foo {
+		comp: "\(k)": v
+	}
+}

tools/trim/testdata/do_not_remove_field.txtar

@@ -0,0 +1,7 @@
+-- in.cue --
+{[_]: x: "hello"}
+a: x: "hello"
+-- out/trim --
+== in.cue
+{[_]: x: "hello"}
+a: {}

tools/trim/testdata/issue303.txtar

@@ -0,0 +1,9 @@
+-- in.cue --
+foo: c: true
+foo: #M
+#M: c?: bool
+-- out/trim --
+== in.cue
+foo: c: true
+foo: #M
+#M: c?: bool

tools/trim/testdata/list_removal_1.txtar

@@ -0,0 +1,15 @@
+-- in.cue --
+service: [string]: {
+	ports: [{a: 1}, {a: 1}, ...{ extra: 3 }]
+}
+service: a: {
+	ports: [{a: 1}, {a: 1, extra: 3}, {}, { extra: 3 }]
+}
+-- out/trim --
+== in.cue
+service: [string]: {
+	ports: [{a: 1}, {a: 1}, ...{extra: 3}]
+}
+service: a: {
+	ports: [{}, {extra: 3}, {}, {}]
+}

tools/trim/testdata/list_removal_2.txtar

@@ -0,0 +1,13 @@
+-- in.cue --
+service: [string]: {
+	ports: [{a: 1}, {a: 1}, ...{ extra: 3 }]
+}
+service: a: {
+	ports: [{a: 1}, {a: 1,}]
+}
+-- out/trim --
+== in.cue
+service: [string]: {
+	ports: [{a: 1}, {a: 1}, ...{extra: 3}]
+}
+service: a: {}

tools/trim/testdata/optional_does_not_remove_required.txtar

@@ -0,0 +1,23 @@
+-- in.cue --
+a: ["aFoo"]: 3
+a: aFoo:     _
+
+a: {
+	{["aFoo"]: 3}
+	aFoo:     _
+}
+
+["aFoo"]: 3
+aFoo:     _
+-- out/trim --
+== in.cue
+a: ["aFoo"]: 3
+a: aFoo:     _
+
+a: {
+	{["aFoo"]: 3}
+	aFoo: _
+}
+
+["aFoo"]: 3
+aFoo:     _

tools/trim/testdata/remove_due_to_simplification.txtar

@@ -0,0 +1,45 @@
+-- in.cue --
+foo: [string]: {
+	t: [string]: {
+		x: >=0 & <=5
+	}
+}
+
+foo: multipath: {
+	t: [string]: {
+		// Combined with the other constraints, we know the value must be 5 and
+		// thus the entry below can be eliminated.
+		x: >=5 & <=8 & int
+	}
+
+	t: u: { x: 5 }
+}
+
+group: {
+	for k, v in foo {
+		comp: "\(k)": v
+	}
+}
+-- out/trim --
+== in.cue
+foo: [string]: {
+	t: [string]: {
+		x: >=0 & <=5
+	}
+}
+
+foo: multipath: {
+	t: [string]: {
+		// Combined with the other constraints, we know the value must be 5 and
+		// thus the entry below can be eliminated.
+		x: >=5 & <=8 & int
+	}
+
+	t: u: {}
+}
+
+group: {
+	for k, v in foo {
+		comp: "\(k)": v
+	}
+}

tools/trim/testdata/remove_implied_interpolations.txtar

@@ -0,0 +1,18 @@
+-- in.cue --
+foo: [string]: {
+	a: string
+	b: "--\(a)--"
+}
+foo: entry: {
+	a: "insert"
+	b: "--insert--"
+}
+-- out/trim --
+== in.cue
+foo: [string]: {
+	a: string
+	b: "--\(a)--"
+}
+foo: entry: {
+	a: "insert"
+}

tools/trim/testdata/remove_top-level_struct.txtar

@@ -0,0 +1,29 @@
+-- in.cue --
+a: b: 3
+for k, v in a {
+	c: "\(k)": v
+}
+c: b: 3
+
+z: {
+
+	a: b: 3
+	for k, v in a {
+		c: "\(k)": v
+	}
+	c: b: 3
+}
+-- out/trim --
+== in.cue
+a: b: 3
+for k, v in a {
+	c: "\(k)": v
+}
+
+z: {
+
+	a: b: 3
+	for k, v in a {
+		c: "\(k)": v
+	}
+}